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DC INVERTER MULTI VRF SERVICE MANUAL

1. Servicing valve Suction side ER Si Liquid pipe Gas pipe Oil balance pipe C The piping connection diagram of outdoor unit balance pipe Gas pipe Liquid pipe 101 INSTALLATION DC Inverter Multi Service Manual 4 7 Design requirements for oil trap If the height different between the indoor unit and outdoor unit exceeds 6m one oil trap shall be installed every 6m from lower to upper on the vertical sect
2. Ae 65 ao L 30 L Reactor 11213 veo 29 4 Commutator Board POWER vii A HE E LI Lt DUI w9 Te CN7 28 API ain Boor e IAC 2 07 alt lu 7 V 27 AP otor Driving Board r 4 AAA X2 4ya2 AC L2 AP3 b a E Y E ae L3 DUT Wil ap das 59 01 y 26 Driving Boar 4 w5 N DUT Wie HEAT ff 09 LBQ Filter mE 6 N GND b W103 u COMP1 COMP2 4 m N 24 RTI RTS8 Discharge Temp Sensor is DI MID DUT W102 ey Le EH3 us 23 RTS RT4 RT3 1 E TEMP SENSUR cLINEL Eus ee RT Environment Temp Sensor BT We4 T COMP2 COMP1 we 21 RI6 RI Shell Top Temp Sensor s gt M2 FAI E 20 EHS COMP2 Band Heater Low Pressure Sensor CNI NEI 9 EH2 Oil Separator Band Heater
3. pull out the exhaust pipe e Loosen the 4 screws on the front panel e Lift the front panel to remove it Note there are two buckles for the left and right front panel Do not pull the front panel directly It is necessary to lift it before pull it e Loosen the screw fixing the power cord e Disconnect the power cord e Pull out the elelctric heater and discharge temperature sensor Note mark the color of the power cord and corresponding terminal e Loosen the 4 screws fixing the compressor e Heat the suction and discharge pipe by gas welding Then remove the compressor e It is necessary to charge nitrogen for welding The pressure of nitrogen is 0 5 0 1kgf cm2 abosilute pressure e Do not burn the surrounding matters when heating 5 Remove the compressor 6 Fix the new compressor on the chassis 7 Connect the air inlet and outlet to the pipeline 8 Connect the power cord electric heate
4. Removal and Assembly of Liquid Storage Tank Remark Before removing the liquid storage tank make sure that there is no refrigerant inside the pipe system and that the power has been cut off 1 Loosen the wire fixer of the left electric box and the screws 2 Take off the left electric box 3 Disassemble the liquid storage tank loosen wire fixer Solder the spots _
5. Er Hed wane A A Fx Nt 4 E 4 il y uil L b Solder the spots Remove the left and right front panels Loosen the wire fixer of the electric box e Loosen the fixing screws of the left electric box e P
6. E External Q power wire External power wire power wire Exposed conducting MN 1 Right ME Right Wrong W 3 Inspection of Power Supply Capacity of the Units Due to the working current changes greatly under different conditions which is much more than rated current the electric network is unstable and power factor decreases the capacity of power supply shall be 1 5 1 8 times of rated power 4 Selection and Usage Mode of Air Switch and Fuse link a For commercial air conditioners independent air switch fuse link and other similar components must be installed the selection and usage mode of which shall be proper Note al Air switch can be protection for overload and short circuit The ability of breaking current and response speed 15 not as good as fuse link but it can be manually reset after it 1s operated a2 Fuse link just can be protection for short circuit of the units Its ability of breaking current and response speed are good but it shall be replaced after it 15 operated b The selection of air switch can refer to rated current of the complete unit 2 25 times of which shall be close to the current of air switch 5 Inspection of Components inside the E
7. Weld the spots Check if the parts and connecting wires aire well connected Fix the front panel eRemove the left and right front panels e Loosen the wire fixer under the right electric box Loosen the screws fixing the right electric box Put a support of suitable height in front of the left electric box Take off the electric box and lay its front part on the support Heat the 2 nozzles by gas welding and remove the gas liquid separator Note do not burn the other parts during soldering Adjust the connecting pipe to pull out the gas liquid separator Move out the gas liquid separator from the electric box Mount the gas liquid separator according to the position of inlet and outlet pipe Weld the 2 connecting spots Charge nitrogen for welding The pressure of nitrogen is 0 5 0 1kgf cnr relative pressure Note do not burn the other parts during soldering 6 Mount fixing screw of gas liquid separator and electric heating tape 7 Mount front panel
8. W65 Dia L High Pressure Switch P E m 3l HP L HP2 HPS OF _COMPI COMP2 COMP3 LiL 23 weg L Eel POWER E LI LBB L1 DUT FON W9 LI dat CNe6 CNe7 U 30 eactor XT COMMUTATE ni 1 eA ALL Mio AP3OXL WS aps pr 29 5 Commutator Board aie 2 3 7 Ace hP3 X0 yea e 13 MS um wa 7 L3 33 v 28 1 ain Board WA E N COM DUTS KK e 4N N N DUT HEAL m DUE 27 AP2 AP4 otor Drive Board pe 6 ui M L 26 COMP3 Drive Board ni We 5 gy CEF ake 29 LBO Filter mi White Jacket COMP2 COMP1 COMP3 tmd C RT20 RT17 RT16 shett Top TenpSensor T lt ve 9 8 wes amp t MID UUT ue 23 RTISZRTIAZRTIS Low Pressure Sensor Jens ou s er Environment Temp Sensor Jd A Xe COMPe COMP1 COMP3 AC L TE CD C High Pressure Sensor cne TE HI Hi cl RTIS RTH RTIS ischarge Tenp Sensor ek m FAI AP 20 CUMP3 Band Heater Ruo g 1 5 cn LS Band g wsi CH na eni SExhd CNS ou 52 e E 4 Lil Separator Band Heater weg wedvey wee Aes mi ee 7 7 8 EHI 1 2 Band Heater _ 2 es Gag Ho juw U
9. DC Inverter Multi VRFService Manual e Mount the parts of 4 way valve on the new 4 way valve according to the disassembly sequence e Fix the screws of the elelctric box e Tighten the wire fixer of the electric box e Check if the parts and connecting wires are well connected e Fix the front panel 209 MAINTENANCE Service Manual Service Manual m Removal and Installation of Electronic Expansion Valve Remark Before removing the electronic expansion valve make sure that there is no refrigerant inside the pipe system and that the power has been cut off 1 Remove the e Remove the left and right panels Illustration Handling Instruction coil of electronic expansion valve 2 Disassemble the electronic expansion valve Solder the spots 3 Take out the electronic expansion valve 4 Replace the electronic expansion valve Weld the spots 7 5 Mount the coil of the electronic Electronic Expansion Valve expansion valve 6
10. 3 e Adjust the connecting pipe to pull out the liquid storage tank e Move out the liquid storage tank from the electric box e Weld the 2 connecting spots e Charge nitrogen for welding The pressure of nitrogen is 0 5 0 1kgf cm relative pressure Note do not burn the other parts during soldering e Move up the electric box and fix it e Tighen the wire fixer of the right electric box e Check if the parts and connecting wires aire well connected e Fix the left and right front panels VRFService Manual 8 EXPLODED VIEWS AND PART LIST 8 1 Outdoor Unit e Exploded View of GMV Pdm224W NaB Mexploded views 11 2 ey LAK N S ee Heel 2 A A e
11. 202 5 FEATURES OF THE HIGHT LOW PRESSURE SENSORS e eee eee 204 5 1 Features of the High Pressure Sensors R410a ee eee eere eee eene eee eee 204 5 2 Features of the Low Pressure Sensors R410a eene eee e e eee eee ee ee eee eee eee eee eee Se 205 6 AFTER SALES EMERGENCY MEASURCES ee eee eee e eee eene teet eese ee esee ette sees eee 206 7 DISASSEMBLY AND ASSEMBLY PROCEDURE OF MAIN PARTS 207 YEN S teg riri e E M 207 8 EXPLODED VIEWS AND PART LIST 216 ak COUT GOR 9022326901 0052 602962212 002008 IH 216 VRFService Manual PRODUCT 1 PRODUCT DC Inverter Multi VRF Service Manual PRODUCT 1 MODELS LIST 1 1 Outdoor Unit Modle GMV Pdm224W NaB M GMV Pdm280W NaB M GMV Pdm335W NaB M GMV Pdm400W NaB M GMV Pdm450W NaB M PRODUCT 2 Product Code Capacity BE mE B Bm 380 415 V 3Ph 50Hz 380 415V 3Ph 50Hz 380 415 V 3Ph 50Hz 380 415V 3Ph 50Hz 380 415V 3Ph 50Hz Appearance DC Inverter Multi VRFService Manual GMV Pdm W NaB M Appearance Model 224 280 335 400 450 504 560 615 5 670 c 4 N 730 E 785 gt gt 850 950 1008 1065 T em 4 x 1130 Z
12. DC Inverter Multi VRFService Manual e Move the compressor from the chassis e Put the new compressor in the right position e Tighten the screws fixng the compressor e The compressor can not be pside down eHeat the suction and discharge pipe by gas welding Then remove the compressor 1 is necessary to charge nitrogen for welding The pressure of nitrogen is 0 5 0 1kgf cm2 relative pressure e Do not burn the surrounding matters when heating e Mount the power cord according to the disassembly sequence e Tighten the screws fixing power cord e Mount the electric heating tape and discharge temperature sensor e Check if the parts and connecting wires are well connected e Fix the left and right front panels 207 MAINTENANCE DC Inverter Multi VRF Service Manual Removal and Assembly of 4 way valve Remark Before removing the 4 way valve make sure that there is no refrigerant inside the pipe system and that the power has been cut off 1 Loosen the left wire fixer of the left electric box and the fixing screws 2 Remove the left electric box 3 Remove 4 way valve parts 4 Remove 4 way valve 5 Remove 4 way valve from the pipe 6 Mount 4 way valve MAINTENANCE 208 loosen wire fixer
13. e Parts List of GMV Pdm224W NaB M for CN851W1000 6 e Wa 5 Reese e 30 _ 215 MAINTENANCE VRE Service Manual Service Manual MAINTENANCE 216 VRFService Manual e Exploded View of GMV Pdm280W NaB M exploded views ESS 32 e Parts List of GMV Pdm280W NaB M for CN851W1010 _ 00 _ 217 MAINTENANCE VRE Service Manual Service Manual MAINTENANCE 218 VRFService Manual e Exploded View of GMV Pdm335W NaB M exploded views CJ F as opem
14. CAM Communication eee E ln modulel Ind su Outdoor unit i Communication e modulel The max of N is 64 k Ind ni Outdoor unit Fig 6 1 4 As shown in figure the V at A are parting lines for communication net Left side of the 15 the communication net between central control and communication module while the right side 15 that between multi variable outdoor unit and indoor units The 2 nets are individual nets Before normal use of central control do conduct addresses setting and adjusting to communication system by installation personnel Only after that can the central control offered to be used by user 6 4 Case Study Take one floor of an office building for example to illustrate wiring and debugging of the centralized control system In this floor there are 2 assembly rooms 8 offices and 1 monitor room Refer to the following illustration for its plane structure d ds s 255 gt m WI Assembly Room No 1 Assembly Room No 2 Office No 7 Office No 8 E Office No 1 Office
15. DC Inverter Multi VRFService Manual Move up the electric box and fix it e Tighen the wire fixer of the right electric box Check if the parts and connecting wires aire well connected e Fix the left and right front panels e Remove the left and right front panels e Loosen the left and lower wire fixers of the left electric box e Loosen the screws fixing the left electric box e Put a support of suitable height in front of the left electric box e Take off the electric box and lay its front part on the support e Heat the 2 nozzles by gas welding and remove the gas liquid separator Note do not burn the other parts during soldering 213 MATNTENANCE DC Inverter Multi VRF Service Manual 4 Remove the liquid storage tank 5 Mount new liquid storage tank 6 Fix electric box and wire fixer 7 Mount the front panel MAINTENANCE 214 Weld the spots
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17. AD p 4 5 GREE CENTRAL AIR CONDITIONERS T1 R410A 50Hz GC201107 1 GREE ELECTRIC APPLIANCES INC OF ZHUHAI CONTENTS LMODELS oc 2 0 R 2 ZINDMENCLIATUPRDB 5 2 1 Nomenclature of Outdoor D BID cer Er E 5 SEUNCIION m 5 6 4 1 Product Data OF Outdoor eoe ERR EREE YS PANE 6 S PIPING DIAG RRA asosieseestees eesnse __ ____ 16 5 1 Piping diagram of GMV Pdm224W NaB M GM V Pdm280W NaB M 16 5 2 Piping diagram of GMV Pdm335W NaB M GMV Pdm400W NaB M GM V Pdm450W 107 e MEN 17 LCONIROLOFPTHE 20 L I Concept of Integral Control Of the Unit 20 1 2 Operation Flow Chart of the 22 1 3 Operation Flow Chart of Outdoor 26 2 WIREDLESS R
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19. gt uni N UN Do not apply any force to this board both sides Insert the ropes through square hole Move the lower wood frame of the packaging box away and lift the unit to correct position ES DRS j During lifting the position of ropes is as shown below Square hole Correct Correct 91 INSTALLATION Service Service Manual 3 1 Installation of Outdoor Unit with Side Air Outlet To ensure good operation of the air conditioner the selection of installing position must be in accordance with the following principles The air discharged from the unit will not flow back and there shall be adequate service space around the machine The installing position shall be in good ventilation so that the machine can breathe and exhaust enough air Ensure that there 1 no obstruction at the inlet and outlet of the machine If any please remove the obstructions blocking the air inlet and outlet The installing position shall be strong enough to withstand the weight of outdoor unit and be able to isolate the sound and absorb the vibration Also ensure that the outlet air and noise from the air conditioner will not affect the neighbors The outdoor unit must be lifted by using the designated lift hole During lifting
20. 9 mew o 3 OwOmammay N 3 9 wma see 3 ie 9m 3 3 0 Diete 3 1 MAINTENANCE 224 VRFService Manual e Exploded View of GMV Pdm450W NaB M exploded views CJ EHE i It 69 72 4 05476 E LL ja y EZIO e e 2 22 10 1 TY A oe j PA E L IL IL IL L e Parts List of GMV Pdm450W NaB M for 851 1040 Name
21. Wert Ra 225 MAINTENANCE VR Service Manual OOO Service Manual F o o esse 6 _______ s MAINTENANCE 226 VRFService Manual 3 Co 9 mew o 3 OwOmammay N 3 9 wma see 3 ie 9m 3 3 0 Diete 3 1 227 MAINTENANCE GREE Add West Jinji Rd Qianshan Zhuhai 519070 Guang Jong China Tel 86 756 8522218 Fax 86 756 8669426 Email gree gree com cn amp http www gree com i For continuous improvement in the products Gree reserves the righi i to modify the product specification and appearance this manual without notice and without incurring any obligations JF00300207
22. Mian boar CNI6 Communication 2 of indoor units CNI2 CN17 inerface of out unit CNI8 AddresscodeS2 Communication between the indoor and the outdoor A Communication cnt or B e Pinboard 2 2 Indoor to indoor communiction 2 No n 16max gt Communication between the indoor and the outdoor Qty of indoor unit is less than or equial to 16 I Communiation line Indoor to indoor communiction N 2 No n 16max 2 Qty of indoor unit is less than or equial to 16 SINGLE MODULAR COM OUT3 Communication inerface Inverter drive plate inside the unit Pinboard 1 Address code S2 Communication inerface A CNI B Communication inerface Capacity code SWI Qty code Address SW2 code SW3 Communication ON DIP CN3 inerface Communication inerface Mian board UP Li n of out unit CNI8 1 2 3 Address code 52 77 TR Communication between the indoor and the outdoor A Fase Communication cnt or e Pinboard 2 HR 2 Indoor to indoor communiction
23. py KM3 Kx COMPI CUMPe Constant trequency Compressor kme KML Code Name MAINTENANCE 196 VRFService Manual 4 TABLE OF THE RESISTANCES OF COMMON TEMPERATURE SENSORS 4 1 15kO CC kQ 15K 5V 15K 3 3V CC kQ 15K SV 15K 3 3V i omm o am o _ s ome ow ese on s s oves ew os s 1 esw ew ows s ism _ aem m 3 ww m os am we o oe _ o 9m um em o s o s o xw oe oo ow _ o o ae o oo som _ 5 o as c son poo o ox as no o e oe _ gt o ow ae w w ses ow 197 MAINTENANCE wy VRE Service Manual Service Manual o om m 266 sso om si _ 6 oa e ass em ss o Ls om om o ssi _ om o oe MAINTENANCE 198 VRFService Manual 4 2 20 CC kQ 20K 5V 20K 3 3V CC kQ 20K 5V 20K 3 3V 3 oss ome e sso sm 3 Y U 5 lt lt 55 ET 1533 0 577 0 381 2 495 4 445 2 934 15 145 0 606 0 400 2 415 4 461 2 944 4 w mes
24. Variable frequency top casing temperature sensor error Fixed frequency 1 error with sensor of housing head cover Fixed frequency 2 error with sensor of housing head cover o 9 TT Low voltage sensor error o 0 0 The quantity of Prem e up is inconformity gt 1 c Notes 1 blink edark obright The error of DC fan motor board is displayed by the continuous blinking counts of single LED red the error of AC fan motor board is displayed by the state of LED red yellow and green Note The code E5 represents different errors Therefore then the wired controller of indoor unit or the lamp displays E5 protection please do not immediately cut off the power of complete unit but checking the records of mainboard adaptor board and drive board on outdoor side and observing the detailed display of the error lamp to identify the specific error protection 169 MAINTENANCE Service Manus 1 Service Manual m 1 3 Number of indoor units display Access method Short press SW10 1 twice within 2 seconds to enter into Indoor Unit Number Detection mode Operation state The LED6 LEDI display the binary value of the number of indoor units maximum up to 63 sets bright bright bright bright bright bright When the number of indoor unit is 0
25. 54 62 Centralized Controller CES1 24 E M 57 6 3 Connection Between Controller and Unit cccccccsccsccccccccccccccccccccccccccccccccscccccccccccccccccsecs 68 UV Ego gir m Q 68 7 MONITORING ARE gen 84 Lil Remote Monitoring m 84 VIVE dE Iul RET CT MEET 84 SDELECHONCONEROL BOAR 85 Bol 85 5 2 Working Process of Gate Control 85 8 3 Detection Control Board Interface Sketch is shown Fig 2 eee ee eere eere 86 5 2 Products Paranie CrS 5 5 2505505 16S Sa spa NR NR RARO EROS VERE OSEE 86 8 5 Installation of Detection Control Board eee eee Lecce eee eee e ee eere eee eee e eee esas sss ette eese eee 86 1 PRECAUTIONS FOR INSTALLATION eroe eee eoo eroe enne trono e eene a root eroe ee o none 89 Del 89 L2 Key of 90 2 FLOW CHART OF INSTALLATION SET ESOS SEE PETERE Fa RES eee epa 91
26. eee eee eee eee 105 SIE ere 105 5 2 Three Principles of Refrigerant Piping Installation eeeeee ee eee eee eene ee een nnne nuu 106 5 5 Installation of Metal Embedded Piperita 106 5 4 Installation of Carriage of Refrigerant pipin ecce eere eee eee e e eere eere eee eee see nenezeziceenee 106 5 5 Management and Machining of Refrigerant Piping eee ee eee ee eee eee e e e eere eee 107 5 6 Installation o Refriverant Piping aaa 111 So Welding OF Copper PIDE oiii 113 5 8 Cleaning of Refrigerant Piping iii 117 5 9 Pressure Maintaining and Leak Hunting iaia 118 5 10 Heat Preservation of Refrigerant Piping sisisssscsscvesiecsveseasssssceusaseveessesiesceuusesedvesentsnssacnsiweseseasenss 119 VACUUM emn veterani farina 120 Sal Remie rnt 121 6 INSTALLATION OF CONDENSATE PIPE 123 6 1Material Quality Requirements for Condensate Pipe e eere eere eene 123 6 2 Key Points for Condensate Pipe Tis alam deese o a PE iue reos a Fa a ved veros 123 63 Test ES ondensate ERE TT T
27. le nl 47987 m ATO et MA P TR g W U N U TT Dl UN IN MO mu PQ B e Parts List of GMV Pdm335W NaB M for CN851W1020 Nan os 2 Rear Grill 1 Gi nine rsu gt io ou e 219 MAINTENANCE VR Service Manual OOO Service Manual F o 0 mmm 6 _______ osso 1 MAINTENANCE 220 VRFService Manual 3 Co 9 mew o 3 OwOmammay N 3 9 wma see 3 ie 9m 3 3 0 Diete 3 1 221 MAINTENANCE VRE Service Manual Service Manual MAINTENANCE 222 Exploded
28. Communication Communication Communication inerface inerface inerface 1 2 3 Address code S2 Address code S2 Inverter drive CNI B CNI B plate inside the unit Communication Communication Communication Pinboard 1 inerface Pinboard 2 inerface sea Communication between 2 the outdoor and the indoor o 2 Indoor to indoor communiction 1 2 No 1 ma No2 N i Naatin A Qty of indoor unit is less than or equial to 16 Added pinboards 2 Indoor to indoor communiction 2 2 p w ea Qty of indoor unit is less than or equial to 16 Communication between the indoor and the outdoor 2 Indoor to indoor communiction 3 2 No n 16max 3 Communication between the indoor and the outdoor Qty of indoor unit is less than or equial to 16 133 DC Inverter Multi VRF Service Manual NO 2MODULAR NO 1 MODULAR Address code SW3 Address code SW3 Qty code SW2 Qty code SW2 Capacity code SW1 Capacity code SW1 Inverter drive plate inside the unit Communicatior inerface inerface Mian board of out unit Mian board of out un
29. on line communication modular INDOOR corresponding to display on line indoor control SELECT Select required control or setting object repress the button to the object is to cancel Begin control setting mode and Central Control Select Control and Single Control can be selected CONTROL MODE Central Control Control all indoor units under domain by present set state I5 Single Control Control present indoor unit by present set state Select Control Control selected indoor unit by present set state it also called grouped control CONFIRM Confirm the operated operation is effective 17 CANCEL Press this button during process of setting function to exit the already made function setting operation Such as if central control mode were selected press CANCEL at this time would back to control mode selecting state 55 CONTROL VRE Service Maul Om Service Manual 6 1 3 Display View D 4 5 INDOOR UNIT LIE PE ELEC LUI 0110203 04 0506 07 080910 111213141516 w 000 DO 4950 5 1 52 53 54 5556 57 5859 6056 1 62 63 64 MAN INE er CENTER SYS ADDRESS LE CTRL MODE sigue SELECT SET INITIALIZE Pagination displays Under select control mode group no that is present controlling is displayed present domain Under addresses setting state present Soft Add 15 displayed Displays the soft address of communication module that the present checking or Present unit no controlling indoor unit 1s belonged a
30. mode and cut off the power supply to the indoor and outdoor units Step 2 shut off all cutoff valves of the faulted outdoor unit including the cutoff valves of the liquid gas pipe as well as the oil balancing valve Step 3 cut off the air switch of the module Step 4 remove the communication line between the faulted module and other modules which are still kept connected through the communication line Step 5 readjust the address and quantity settings on the main board of the modules except the faulted one Step 6 power and restart the unit 205 MAINTENANCE DC Inverter Multi VRF Service Manual m 7 DISASSEMBLY AND ASSEMBLY PROCEDURE OF MAIN PARTS 7 1 Outdoor Unit Removal and Installation of Compressor Remark Before removing the compressor make sure that there is no refrigerant inside the pipe system and that the power has been cut off 1 Remove front panel 2 Remove power cord electric heater and discharge temperature sensor 3 Remove the fixng screw of compressor 4 Remove the suction pipe MAINTENANCE 206 Mark the power cable color and corresponding terminal
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32. Pinboard 1 NEN NEN ____ Communication between 2 the outdoor and the indoor Pinboard 2 P 2 Indoor to indoor communiction 1 2 42222222222 ee ae wee No n 16max gt It is acceptable to connect with pinboard of other module Qty of indoor unit is less than or equial to 16 132 DC Inverter Multi VRF Service Manual 4 When the qty of outdoor units is more than 2 and the the qty of indoor units is not more than Nx16 sets there is no need for adding patch board The qty if indoor units connected by each patch board shall be not more than 16 sets The corresponding interface port of patch board 15 CNI 1 MODULAR NO 2MODULAR Inverter drive plate inside the unit Capacity code SW1 Qty code Address SW2 code SW3 Capacity code SWI Qty code Address SW2 code SW3 ommunication inerface Communication Communication inerface inerface NIG To next dul Mian board CN i Communication inerface CNI16 CN17 B CN18 Mian board eor of out unit Communication A inerface of out unit p ON DIP CNI or B COM OUT3
33. measures After drying the mainboard brush it with damp proof gum water 2 If it is polluted find out the reason and protect it from dust If the environment is bad clean the dirt periodically 3 If it is short circuit find out the reason and clean the electric box so Replace mainboard as to prevent the conductive matter such as iron chippings adhering on the board Cn 18 recorded 189 MAINTENANCE VRE Service Manual Service Manual 2 12 IPM Protecion ES is displayed on the wired controller Monitoring Nixie tube of display i mainboard IPM protection Display H5 Inspect the mainboard 1 min after power off or the buss voltage 1s below 36V Is it wet dirty or short circuit Dry and clean it or remove short circuit Yes Is compressor wire loose or is phase sequence wrong Restart the unit Does it work normally 1 15V of mainboard stable 15V A pin 1 2 Yes Ee 1 If it is affected by damp find out the reason and take some precautionary measures After drying the mainboard brush it with damp proof gum water 2 If it is polluted find out the reason and protect it from dust If the environment is bad clean the dirt periodically 3 If it is shortcircuit find out the reason and clean the electric box so as to prevent the conductive matter
34. T T I b Ground Wire of the Unit For safety the unit must be reliably earthed and the earthing device can t withstand the pulling force of mechanism S D DK lt 16 S D 2 D 16 3 2 5 Inspection of Communication System 1 Inspect the following contents before debugging If communication among mainboard of outdoor modules is normal If qty code and address code of outdoor modules are correct If address codes of patch boards of outdoor modules are correct If connection between indoor unit and patch board is correct If qty of indoor units under enery patch board is less than 16 If connectiong among indoor units air is correct If address codes of indoor units are correct If address code of wired controller of every indoor unit is the same with the address code of corresponding indoor unit 447 ENGINEERING DEBUGGING ENGINEERING Service Manual Service Manual 2 Communication wire shall be independently paved by flame retarded PVC pipe and can t in the same trunking with power cord The parallel distance between communication wire and strong current wire shall be greater than 20 cm 3 Control wires of all electric expansion valves and power cord of 4 way valve shall be reliably connected to the mainboard of corresponding indoor unit If there is any abnormality handle it immediately The debugging can be resumed after the problem has been solved 3 2 6 Befor
35. m wed we4weg FAI A Ie DI D o 8 COMP Band Heater 4 D m E sua Bca 4 ae kk 7 HP1 HP igh Pressure Switch w97 2 n 6 Phase Protector RIS g Exhl SI T Transformer 3 C 2 CN40 DENS Liquid By pass Valve Rre 2 DUT Env E b T 4 YVS YV6 Refrigeront Valve i 3 se 6 CN41 cnie E E an SAL 273 2 5 PI llut A als v33 W34 3 EKV 2 us 1 Valve 2 46 _ Way Valve P1 Midl 2 RIAL 9 3 CN36 KK BN e YV3YVA Gasg pass Valve I Yve yy7 Hil Balance Valve 5 P1 In 2 ll Return Valve vall 2 200 usd usd R 5 3 A 4 5 0 Compl Dil Return Valve 8788 gt FREIER ET F RTG 8 Du gt USE YT2 1 2 2 CN50 Yve CUMPe 8 QF Circuit Breaker 79 w80 vo gt lt 7 4 Terminal Board APZ enek B CNG aso LVD GV oue d v v3 da AMI IO ESA i avi BE AC Contactor Bi V WS KMI A2 3 VEL 40 W39 5 FAI Over Current Protector COPI Indoor FAR 4 LBB Fitter Board 255 J EKV 2 sys 5 M M 95 Al M77 Vorioble Frequency PEC us WH WH 6360 16 13 CUMPe Compressor Constont Frequency CUMPI Compressor BU BU Code Name 195 MAINTENANCE DC Inverter Multi Service Manual GMV Pdm335W NaB M GM V Pdm400W NaB M GM V Pd
36. H E HOUR gt GREE KP Enter cancel A Fan Mode O O Q FunctionT y imer On Off C 9 Fig 3 2 1 1 CONTROL 38 Swing function Swing Sleep Sleep states 3 types sleep 1 sleep2 and sleep 3 N Running mode Defrost Speed High middle low or auto fan speed of the indoor unit Twinkle Running modes of the indoor unit Cooling Dry Fan and Heating Defrosting state It blinks under on state of the unit without operation of any button lt p NY m O Temperature SHIELD Shield state buttons temperature On Off Mode or Save is shielded by the remote monitor state after power failure and then power recovery Ambient preset temperature value HIEL E HEATER 62 m QUIE DC Inverter Multi VRFService Manual 39 CONTROL DC Inverter Multi Service Manual D Gm Enter cancel C FunctionT imer On Off d Fig 3 2 1 2 Button s Function s 1 Function selection and cancellation 2 Press it for 5s to examine the outdoor ambient temperature e DA Running temperature setting of the indoor unit range 16 30 C Mod D 2 Timer setting range 0 5 24hr 3 Switchover between quiet auto quiet or among sleep1 sleep2 sleep 3 lt a Press them for 5s under off state of the unit
37. IN HEN MOSPUPd AIND S SS9Jppv TON 994UJO IST e T 1 SS924ppv YJO C F I SS924ppv L ON wooy A quioss CD uno S TIN OM m 8 e 7 ES 2 BH fZ Jojonuoo pozen TON VPN T OQ IN HEN AMOSCUDd AI ND _ Instruction to Frame Diagram of System Net CONTROL 70 YRF Service Manual Mark A Outdoor Unit GMV Pdm450W NaB M can be connected with up to 32 indoor units by two pinboards either of which can connect with up to 16 indoor units What s more the quantity of communication modules used is the same as that of pinboards In this project pinboard 1 15 connected with the communication module with address of 02 and indoor units address 01 04 of office 7 8 corresponding with independent communication Net 2 Pinboard 2 15 connected with communication module of address 03 and indoor units address 01 08 of office 1 2 corresponding with independent communication Net 3 The outdoor figure is as follow Mark B Outdoor Unit GMV Pdm 280W NaB M can be connected with up
38. Address of 2 wired controller conflict with that of other wired controllers HT Halers 1 345 B 7 ts ts Addresses of indoor units are normal Eroti_16MHr 2010 02 24 16 35 20 Fig C ENGINEERING DEBUGGING YRF Service Manual Search and Setting Methods of Address of Z6035F Wired Controller When the unit is turned off press buttons Fan and ON OFF simultaneously and the address no of the display panel will be shown on where setting temperature is shown on display panel Address code of indoor unit will be shown on where the ambient temperature 1s shown on display panel and address code of patch board which connects main indoor unit will be displayed on where the setting temperature is shown on display panel Search and Setting Methods of Address of ZX6045 Wired Controller Search of address of wired controller When the unit is turned off press buttons Function and Mode simultaneously and the address no of this wired controller will be displayed on display panel Setting of Address of Wired Controller When the unit is turned off press buttons Function and Mode simultaneously for 5s and the address no will be displayed and blink on display panel Press and Y to adjust the address code between 1 16 Then press button Confirm Cancel to confirm it
39. Container __ d Loading Quantity 40 Container i N Loading Quantity 40 High Cube Container Notes D The sound level is tested under circumstance of semi anechoic chamber the value of noise could be a little higher in actual operation 2 The data will change with the change of products Refer to those parameters listed on nameplate 8 The charge amount of refrigerant in the list is the datum when there 15 not drop height vertically between indoor unit and outdoor unit without consideration of connection pipe So calculate the additional charge amount according to actual condition during installation Section area of lead wire is only applicable for 15 m distance If above increase the section area to avoid overload of current which would cause burnout of lead wire The outdoor fan of this unit is without static pressure If static pressure is required please specially notice it on purchase order Running condition of cooling outdoor temperature 5 C 48 C Running condition of heating outdoor temperature 20 C 27C PRODUCT 12 DC Inverter Multi VRFService Manual Model Combined unit GMV Pdm1405W4 NaB M GMV Pdm1456W4 NaB M GMV Pdm1512W4 NaB M GMV Pdm280W NaB M GMV Pdm280W NaB M GMV Pdm280W NaB M Model GMV Pdm280W NaB M GMV Pdm280W NaB M GMV Pdm335W NaB M GMV Pdm400W NaB M GMV Pdm450W NaB M GMV Pdm450W NaB M GMV Pdm450W NaB M GMV Pdm450W NaB M
40. Coolin gH eating Air Supply Cooling Operation Heating Operation Air Supply Operation v v ____ CONTROL 22 VRFService Manual Cooling Operation Cooling Operation There Is Not Guide Louver There Is Guide Louvers Swing Fan Motor Operation In The Process Of Preventing Restart Operation 3 Minutes Temperature Adjustment Fan Motor Stop Electronic Expansion Electronic Expansion Valve Close Valve Capacity Control 23 CONTROL VRE Service Manual Service Manual F Heating Operation Heating Operation There Is Not Guide Louver There Is Guide Louvers Swing In The Operation Of Defrosting In The Process Of Yes Preventing Restart Operation 3 Minutes Temperature No gt Adjustment 7 v v In The Process Of Yes Fan Motor Stop Fan Motor Stop Preventing Cold Air v Fan Motor Fan Motor Stop Electronic Electronic As Per Set Air Supply Expansion Valve Close Expansion Valve Close Speed Defrosting Control lt Electronic Expansion Valve Capacity C ontrol v v CONTROL 24 VRFServic
41. Search and setting of address of wired controller are as follows Off state of unit Enquire the address Set the address which will flicker Li UP iaia Press Enter cancel to make a confirmation Press or V to adjust the address number 151 NGINEERING DEBUGGING VRF Service Manus i Service Manual E Step 4 Make sure that the communication is normal and then record each parameter Finally start one indoor unit every 5 min Step 5 According to reference value of parameter check if there is any abnormal parameter If there is find the cause and solve it Then start the debugging again and if everything is normal measure and record each parameter after 30min Step 6 Record each parameter when the capacity is just shifted and after 30min measure and record these parameters again Finally save the data of monitoring software and the debugging is finished If there is any abnormality find the cause and solve it Then start the debugging again Note during debugging listen carefully for the sound from indoor and outdoor fans as well as the compressor to check if they are normal Indoor unit Outdoor unit DH Abnormal sound i 3 5 Running of Heating Mode If environmental conditions are proper after the debugging of cooling mode has been finished the system can be shifted to heating mode directly The s
42. ar oso oo em 2 ams _ Lo owe es 39 esse 298 iso a ww omo v os xm _ s osx ww sos xw _ x we sw xm m _ Ce ms ww ww sms xm ow ose x9 _ we ws s 2 a ee am so x 3 _ o eso wm wm s x xm 2x _ owe we ese 3 a 6 ume ww 3e xm 2 _ 7 ar ow ase xw 24m dose am xm 246 9 ums oso ose we xm 20m 10 sw we es sz xw 29 i ww oso ws xw 234 _ a oss m sam as ses on os i aw 38 _ 4 ma oso wm ws x _ 201 MAINTENANCE VRE Service Manual Service Manual Co ww am o T_T EL MAINTENANCE 202 DC Inverter Multi VRFService Manual n 8 gt E m 7 zz HE e tm T 5 i 5 2 3 lex gn MN e re gt gn 2 MN re MN rj Absolute Pressure kPa Volt V Temp Absolute Pressure kPa Temp di 388 0 328 2 210 450 0 394 2 448 467 0 412 2 511 484 0 430 2 574 502 0 450 2 639 520 0 469 2 705 538 0 488 2 772 558 0 509 2 841 577 0 530 2 910 597 0 551 2 980 618 0 573 3 053 884 59
43. ir E m me em Sem CONTROL 36 VRFService Manual AI SET TEMP ru Lt Lc e D HER tour 090 OF OO 060 Fig3 1 2 2 Wired Controller Z63351F Z63151F nm py ana s m ea De e TT meo I 3 1 2 Dimension 85 p 12 3 1 2 1 Dimension of Wired Controller Fig 3 1 2 2 Installation Dimension of Wired Controller 42 5 37 CONTROL DC Inverter Multi Service Manual 3 1 3 Installation Casing base installed into the wall Controller Soleplate Screw MAX25 Controller Panel Notice for installation under the guidance of Fig 3 1 3 Cut off power supply before install the electrical components it 15 forbidden to carry out the installation with power on 2 Get one end of the 4 core communication cable put it through the rectangular hole on the base board on the wire remote controller 3 Hold the base board of controller on the wall then fix it to the wall with 4 25 screw 4 Plug the 4 core communication cable into the slot on the wired remote controller then fix the controller panel with base board together 3 2 Wired Controller XK02 3 2 1 Operation View aT SK ES E CICI s
44. of the compressor the normal temperature of the discharge pipe or the top shell is between 70 C 85 C and the normal heating temperature is between 65 C 75 C both of which are at least 10 C higher compared with the saturated temperature of the corresponding system high pressure eOn condition that the inverter compressor runs but the fixed frequency compressor stops the shell top temperature of the fixed frequency compressor should be a little higher than that of the ambient which is very close to that of its discharge pipe This parameter is not applicable to the unit with the capacity less than 28 0K W eUnder the cooling mode the inlet pipe temperature of the heat exchanger should be at least 20 higher than that of the outlet pipe eUnder the heating mode with the outdoor ambient temperature below 10 C the temperature of the inlet pipe of the heat exchanger should be 1 higher than that of the outlet pipe while if the outdoor ambient temperature is above the temperature of the inlet pipe should be 3 C 10 C higher The temperature under the normal high pressure should be among 20 C 55 With the change of the ambient temperature and the system running capacity this temperature should be 10 C 40 C higher than the ambient temperature The higher the ambient temperature is the smaller the temperature difference between them is eUnder the system low pressure of the cooling mode the tem
45. GMV Pdm450W NaB M 380 415V 50Hz 3Ph x Power Lines 7 8 7 8 3 4 du 12 7 12 7 12 7 930 930 1340 1340 930 930 1340 1340 930 1340 1340 1340 Dimensions 1670 1670 1670 1670 1670 1670 1670 1670 1670 1670 1670 1670 1010 1010 1420 1420 1010 1010 1420 1420 1010 1420 1420 1420 85 770 770 770 770 770 770 770 770 770 770 770 770 8508504850850 850 850 850 850 850 850 850 850 850 850 850 850 850 850 sar 0 850 850 850 850 850 850 850 8508504850850 mm 1850 1850 1850 1850 1850 1850 1850 1850 1850 1850 1850 1850 Net Weight 255 255 350 370 255 255 370 370 255 350 370 370 Gross Weight 275 275 380 400 275 275 400 400 275 380 400 400 Loading Quantity 20 Container T __ 1 Loading Quantity 40 Container e a Loading Quantity 40 TM High Cube Container Notes D The sound level is tested under circumstance of semi anechoic chamber the value of noise could be a little higher in actual operation The data will change with the change of products Refer to those parameters listed on nameplate 8 The charge amount of refrigerant in the list 15 the datum when there 15 not drop height vertically between indoor unit and outdoor unit without consideration of connection pipe So calculate the additional charge amount according to actual condition during installation 0 Section area of lead wire is only applicable for 15 m distance If above inc
46. Mount front panel MAINTENANCE 210 e Remove the coil of electronic expansion valve e Solder off the connecting pipe of electronic expansion valve Note do not burn the other parts during soldering e Remove the electronic expansion valve e Weld the connecting pipe of the elctronic expansion valve e Wrap the valve with wet cloth when welding the electronic expansion valve eCharge nitrogen for welding whose pressure is 0 540 1kgf cnr relative pressure Note do not burn the other parts during soldering e Mount coil of electronic expansion valve e Check if the parts and connecting wire is well mounted e Fix the left and right front panels DC Inverter Multi LI a Manual Removal and Assembly of Oil Separator Remark Before removing the oil separator make sure that there is no refrigerant inside the pipe system and that the power has been cut off 1 Loosen fixing screw of oil separator and e heater 2 Disassemble oil separator 3 Remove oil separator 4 Mount a ne
47. Protectio i siriana 175 2 5 Exhaust Temperature POCCCOON nona a aa EROSA 177 V Senium T T TTL 178 2 Temperature sensor TT OU We e 179 180 2 7 No energization to unit and mainboard 181 2 9 The AC Contactor does nat pull in sssrin iaaa 182 2 9 Typical troubleshooting E5 for DC frequency conversion drive board 183 PALI PP 188 oi 190 WU cir iii 191 LA EM E A 192 2 14 Sup erheat Protection of Radiator zizi 193 245 DC Overvoltase 194 3 POWER DISTRIBUTION 195 3 1 Diagram of Power Distribution vH vd QUT Exe d ERE SAT EROR Ee bu VEDI E 195 3 2 Introduction of Main Electric Parts of Inverter System ee 195 i VY MIMS GUAGE AMD RR 196 4 TABLE OF THE RESISTANCES OF COMMON TEMPERATURE SENSORS 198 0 DI RR Hr 198 z MEA 4 Co M 200 AMD
48. Refer to step 3 for details Digital N switch v C Address mapping setting of centralized controller The centralized controller only can normally operate after specifying address of communication module needed to control If not the operation status of communication and indoor units can not be displayed by it Refer to Step 4 for details CONTROL 82 YRF Service Manual 7 MONITORING SOFTWARE 7 1 Remote Monitoring System 7 1 1 Introduction to Remote Monitoring System The great development of Gree s technology for manufacturing commercial air conditioners enables Gree to provide remote monitoring system for Gree commercial air conditioners to users which can solve the problem of difficulty on centralized management and maintenance caused by complex and disperse distribution of commercial air conditioners in a building Users can execute daily management and maintenance to the units by the system which 15 easily operated and reliable Combining with technologies for electrommunication and computer software remote monitoring system of Gree commercial air conditioners can collect information inspect running status and execute control and error warning of the commercial air conditioners It can apply with a variety of types of commercial air conditioners such as Multi VRF Units Centrifugal Units Air Cooled Screw Chiller Water Cooled Screw Chiller Closed Control Units Modular Units and Air Duct
49. The LED6 LEDI display the adaptor board communication error code bright blink dark blink blink dark Exit method Short press SW10 KEY 1 twice within 2 seconds to exit to normal mode I Lamp display umber of indoor units LED6 LEDS LED4 LED3 LED2 LEDI Legend bright o dark e blink e 1 4 When the patching board is not communicated with indoor unit if the complete unit stops the address code of patch board and E6 will be displayed alternately as shown in Fig 1 and that is normal condition The patching board is not communicated with indoor unit Fig 1 If the complete unit is running the address code of patch board and E6 will be displayed alternately as shown in Fig 2 and that is normal condition MAINTENANCE 170 DC Inverter Multi VRFService Manual Fig 2 Patching Board Unconnected with Any Indoor Unit If the sytem stops for error the address code of patch board error code and E6 will be displayed alternately When patch board is communicating wth indoor unit if the complete unit stops the address code of patch board will be displaye on it as shown in Fig 3 Fig 3 Patching Board Connected with Some Indoor Unit If the unit is running the patch board will display address code of patch board and ON alternately as shown in Fig 4 171 MAINTENANCE DC Inverter Multi VRF Service Manual Fig 4 Patching Board Connected with Some Indoor Unit If the system stops
50. 1180 gt gt e 1235 1300 1350 3 PRODUCT DC Inverter Multi Service Manual GMV Pdm W NaB M Appearance _ LI NOTES a represents one module Q 1 N represents N modules gt A a gt b indicates the rated cooling capacity c Design of this unit accords with the Standard GB T 18837 2002 d Noise was tested semi silenced room so the actual noise value will be a little higher for change of environment e The charge amount of R410A in the list is only the sealed amount when outdoor unit is outgoing When installing calculate f the additional charge amount according to actual length of pipe and the matched indoor units g Nominal capacities are based on the following conditions N CAUTIONS It is not recommended to adopt the combination mode not specified by this manual PRODUCT 4 DC Inverter Multi VRFService Manual 2 NOMENCLATURE 2 1 Nomenclature of Outdoor Unit 0 0 224 WU Na B O 1 2 3 4 56 78 9 2243 5045 OKW Default One module 2 Two modules 3 Three modules 4 Four modules E Power supply M 3808 415V 3Ph 50Hz 3 FUNCTION X For Comfortable Air Conditioning Auto Restart Fan Operation Mode LCD Remote Controller Option Auto Swing Function Model quantity of the Pdm series unit Ceiling Soiling Prevention Program Dry High
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52. 3 INSTALLATION OF OUTDOOR UNIT ieeet eenvis ae Neue see ey YTEFE FEE YES EYE OE air 92 Si rrr rrr venues 92 3 1 Installation of Outdoor Unit with Side Air 93 3 2 Selecion of Installation Sile e RR 93 5 5 Dimensions ri 94 DA arance Dila enoa eE E AEE EASES ESES NEERA 95 3 5 Take Monsoons and Snow into Consideration eeeecccossssssececcccooosssesssecccooocsssseccececocosssssssceesesso 97 4 INSTALLATION REQUIREMENTS OF REFRIGERANT PIPING 98 MS UITIUM H 98 4 2 Allowable Length and Height Differences of the Refrigerant Piping between the Indoor and Outdoor U miis T 98 AE E E E T AT E E E 100 4 4 Selection of Y Type Branch Pipe divini 100 4 5 Selection of Refrigerant Piping between Outdoor Unit and Outdoor Unit for module unit P 101 4 6 Outdoor unit PIPING sequence dlagram siiccriiirzissiarazioninezeszanissaniazioniasaininisiundsinzizivnianisiibiaizzzaza 102 4 7 Design reg irements for oil apriranno iraniana iaia 103 5 INSTALLATION OF REFRIGERANT PIPING
53. 3 phase power supply is used for the unit 3 phase filter plate that uses 3 stage filtering mode shall be employed Input terminals of 3 phase filter plate are respectively AC L1 AC L2 AC L3 and N and corresponding output terminals are respectively L1 OUT L2 OUT L3 OUT and N OUT B Drive board 1 a key part of control system Receiving commands from the main control board the drive board can transform 380V 50Hz 3 phase commercial power into AC power with adjustable amplitude and frequency capable to drive compressor 21 CONTROL VRE Service Manual Service Manual 1 2 Operation Flow Chart of the Unit Connecting To Power Suppl y r Initialization Of Bectronic Expansion Valve Start Indicating Light Is ON Volume Air Supply Direction Start Indicating Light OFF gt Display The Last Setting s Of Air Start Display Flickering Abnormality Code Display Is The Protecting Press The Start Stop Switch gt Start Indicating Light Start Display OFF Air Volume Setting Display Abnormal Mode Display Displaying Air Supply Direction Setting Display Displaying Temperature Setting Display Displaying i Air Supply Blower Stop Electronic Expansion Air Supply Or Temperature Guide Louver Stop Temperature Adjustment Cooling Or Heatig
54. 32 14 32 14 32 13 9 13 9 13 9713 9 25 6 25 6 25 6 25 6 24 85 24 85 24 85 24 85 40 40 40 40 x 2 10x5 10x5 10x5 10x5 IP24 am mm m mm 54 1 54 1 Pipe 17 8 17 8 uu 0254 0254 onnecting Pi Inh pe Inch 1 pipe mE 12 7 12 7 Pipe nch 1 2 1 2 Connection Method Width Depth Brazing Connection 1340 1340 1340 1340 770 770 770 770 Height 1670 1670 1670 1670 Width 1420 1420 1420 1420 ept mm F Depth mm 850 850 850 850 850 850 850 850 1850 1850 1850 1850 1850 1850 1850 1850 Net Weight 350 370 370 370 370 370 370 370 Gross Weight 380 400 400 400 400 400 400 400 Loading Quantity 20 Container Loading Quantity 40 Container Loading Quantity 40 Brazing Connection 1340 1340 1340 1340 770 770 770 770 1670 1670 1670 1670 1420 1420 1420 1420 Dimensions of Unit B z nn unit High Cube Container Notes D The sound level is tested under circumstance of semi anechoic chamber the value of noise could be a little higher in actual operation 2 The data will change with the change of products Refer to those parameters listed on nameplate 8 The charge amount of refrigerant in the list is the datum when there 15 not drop height vertically between indoor unit and outdoor unit without consideration of connection pipe So calculate the additional charge amount according to actual condition during installat
55. Add refrigerant according to the nominal refrigerant volume on nameplate and the calculated charge volume Check if the refrigerant in the system is too low No No Check if the operation mode of indoor unit is set properly Refer to the Instruction Manual for Indoor Unit Yes Check if the gas valve No and liquid valve of outdoor unit are fully open Fully open the valve Yes Check if the front panel No of outdoor unit is covered tightly Cover up the front panel properly Yes Check if the air inlet and No outlet of the indoor and outdoor exchanger is smooth Remove the obstructions Yes Yes Measure the fan motor and signal input Check if the indoor and outdoor fans run normally 1 Check if the indoor swing Measure the swing louver is fully open motor and signal input Yes capa Refer to the of indoor demand AU eor units and outdoor unit Yes i No Check if the indoor electronic Engage the valve body expansion valve can with the coil work normally Yes Yes Refer to the Repair and Maintenance Check if the indoor outdoor filters or radiating fins are dirty or blocked No Focus on checking the inlet and outlet of the conn
56. BLOW displaying press this button and will display BLOW at this time the Blow 15 turned on If repress this button BLOW will be concealed atthis time the Blow function 15 turned off After powered on Blow OFF is defaulted When operating the ON OFF button orswitching mode to Cool or Dehumidifyingmode the Blow function will keep the originalstatus If unit is turned off Blow OFF onlycan be set up and send the signal In Auto Fan as well as Heat mode Blow functioncan not be set up and there is no BLOW displaying temperature can be decreased Press this button the temperature can be button set up continuously press this button and hold for two seconds the relative contents can quickly change until unhold this button and send the order that the C F signal will be displayed all the time The temperature adjustment is unav ailable under the Auto mode but the ordercan be sent by if pressing this button For temperature increasing Press this button can set up the temperature when unit is on Continuously press and hold this button for more than 2 seconds the corresponding contents will be changed rapidly until unpress the button then send the information C F is disp laying all along In Auto mode the temp erature can not be set up but operate thisbutton can send the signal Centigradesetting range 16 30 Fahrenheit scalesetting range 61 86 TEMP Press this button could select
57. During cooling the moisture in the air will condense on the surface of evaporator Such condensing water must be drained out of the unit Meanwhile the drainage pipe has an important role to determine if the air conditioner can plays its full functions 6 2 18 AII the condensate pipes must be installed at a distance over 500mm from the electric box of the unit 6 3 Test for Condensate Pipe The water test for condensate pipe includes closed water test and drainage test The closed water test 15 focused on checking if the drainage pipe system is well sealed and if there is any leakage The drainage test is focused on checking if the drainage pipe system can drain water smoothly and thoroughly and ensuring that there is no water deposit except the specially designed water trap After connection of the drainage pipe 1s completed firstly carry out closed water test Seal the outlet of drainage pipe with adhesive tape or plug Then fill water into the drainage pipe system form indoor unit side Stop filling after ensuring that all the drainage pipes are filled with water After 24 hours check all the joints of water pipe for any leakage If any repair and reinstall If no leakage proceed to drainage test Remove the adhesive tape or plug from the drainage pipe Check the water tray and drainage pipe of indoor unit if the drainage is thorough and if there is any water deposit If any readjust it If not complete the water test and proceed to the ther
58. Fan Speed Mode High Ceiling Application Two Select Thermal Sensor Hot Start Timer Selector X For Easy Construction and Maintenance Fresh Air Intake Directly from The Unit Drain Pump Long Life Filter Ultra Long life Filter Option Mold Resistant Treatment for Filter Filter Sign Mold Resistant Drain Pan Emergency Operation Self Diagnoses Function X For Flexible Control Set Back Time Clock Double Remote Control Group Control By 1 Remote Controller Control By External Command Remote Centralized Control 5 PRODUCT VRF Service Manual Service Manual 4 PRODUCT DATA 4 1 Product Data of Outdoor Unit Model Combined unit GMV Pdm224W NaB M GMV Pdm280W NaB M GMV Pdm335W NaB M Sound Pressure Level dB A v A DR t2 P kW Cooling E 76 43 s 8s Heating E Power Supply V Hz Ph 380 415V 50Hz 3Ph Circuit breaker oo N N Cooling 38 gt se a es asa wa me m 3 N Heating kW kW Cooling A A E C Heating Recommended NN 10x5 Power Lines 22 2 028 6 Gas Pipe Inch 9 52 12 7 Liquid Connecting pipe m mm m of Unit mM an 1 1670 Oil Pipe 93 32 6x5 Tl 7 8 3 8 930 770 Dimensions of Package Loading Quantity 12 12 2
59. Fig 6 2 4 2 To be installed in the control cabinet Make 4 holes inside the wall of control cabinet according to the following dimension in the figure Si 64 Fig 6 2 4 3 CONTROL 60 DC Inverter Multi VRFService Manual 2 Install the electric box cover on the wall or in the control cabinet Wire hole Wire hole Fig 6 2 4 4 3 Connection of power cord and communication wire Make the communication wire through the wire hole of the electric box cover and insert it into the communication port Make the Power cord through the other wire hole on the electric box cover should be connected with the wiring terminal on the mainboard of controller as shown in the figure below L connects with live wire N connects with neutral wire and ground wire connects to the corresponding position marked on the electric box Wire hole can be freely set according to actual condition Power cord width connected with wiring terminals shall be in the range of 1 5 2 2mm Rated voltage of wiring terminal is 220 240 Power frequency is 50 60 2 Communication joint Power wiring terminal Fig 6 2 4 5 61 CONTROL VRE Service Manual Service Manual 4 Divide the centralized controller into two parts from the buckle as shown in the folliwng figure upper cabinet and lower cabinet Upper cabi
60. Group select control Error contents are shown by codes Corresponding communication module numbers of the indoor units with error contents would blink for rapid inspection and repair There is sound warning for a few errors Timer function Every indoor unit can set Timer On Off time by central single or select control Both Timer On time and Timer Off time can be set at the same time and it 1s available to set the timer to which day among the 7 days from sunday to Saturday works Clock function displays in year month day hour minute and week and the clock can be manually adjusted Indoor and outdoor units online auto detect display and working state indication Self inspection function 15 remained Centralized Controller and several communication modules formed communication net the length of communication wire of the net can be as long as 1km without using communication repeaters Note this centralized controller shall be used with communication module ZJ301 W 6 1 2 Operation View ALL ON ALL OFF INDOOR UNIT LI LL LL ERROR d DS SS TESI E ERR CODE Citic Citic 00 LILI E SLEEP MELT TIMER OFF CE ace SYS ADE DETECTING SINGLE SET INITIALIZE a Re Hor Sun EIE vea ate EB ELE min p 15 H SELECT CONFIRM CANCEL CONTROL A ON lt gt 81911 GROUPM OFF ODE SPEED SWINGT I
61. High pressure switch Temperature sensor of evaporator Low pressure switch Discharge temperature sensor Compressor driver Communication User operation Water pump Ambient temperature sensor of indoor unit Indoor coil pipe inlet temperature sensor Indoor coil pipe middle temperature sensor Indoor coil pipe outlet temperature sensor Outdoor ambient temperature sensor Outdoor defrosting temperature sensor Discharge temperature sensor Control description The high pressure protection value is 4 2MPa When high pressure of a compressor is detected for successive three times the compressor will stop Error code E1 will be diaplayed and the running LED will blink When Tevaporator lt 2 lasts for 10min the antifreezing protection will occur The indoor electronic expansion valve will be closed and the capacity 15 0 When the low pressure protection value 0 15Mpa absolute pressure is reached the low pressure switch will be disconnected The low pressure protection will be displayed When discharge temperature T is 113 C or higher the stop protection will occur 4 is displayed upon the first discharge protection After discharge temperature is lower than and the unit stops for 3min the compressor will resume running If this occurs for three times in one hour the compressor can not resume running It is a must to cut off the power and restart the unit The driving board of co
62. It is treated according to 30 C If short circuit occurs to the temperature sensor there will be alarm The error information will be transmitted to each indoor unit The error LED or wired controller will display the error code When outdoor ambient temperature is lower than 5 the break circuit of outdoor temperature sensor will be shielded It is treated according to 30 C If short circuit occurs to the temperature sensor there will be alarm The error information will be transmitted to each indoor unit The error LED or wired controller will display the error code When outdoor ambient temperature is lower than 5 the break circuit of outdoor temperature sensor will be shielded It is treated according to 30 C 167 MAINTENANCE DC Inverter Multi Service Manual 1 2 Trouble Display of Mainboard LED of Outdoor Unit Description of indicator LED Definition LED6 LEDS LED4 LED3 LED2 LEDI Transfer Main control display of the outdoor units board Drive board of compressor Drive board of fan motor Display BED pressure protection Compressor low pressure protection HE FE Error with sub module and main control communication display in sub module Communicationerror with frequency conversion drive Clogged Over current fe of frequency conversion compressor DC input voltage is too high Motor out E EN Ovespeed
63. J mainboard P8 is displayed Superheat protectio of radiator Is radiating of outdoor unit in good state If short circuit happens to air outtake and air return of outdoor unit the radiating effect will be worse If radiator is dirty or blocked the radiating will be worse If the module is loose its temperature will be too high which may burn the module No Is module worse No Is silica gel of module even No Does silica gel of module meet the requirements Check if temperature sensor and voltage dividing resistance are normal It is recorded and If radiating silica gel is too thick it will affect radiating or cause misjudge due to uneven temperature or burn the module If radiating silica gel is too thick it will affect radiating or even burn the module reflected MAINTENANCE 192 2 15 DC Overvoltage Protection 5 18 displayed on the wired controller Monitoring Nixie tube of display L mainboard Overvoltage PH is displayed protection of DC bus Is input voltage DC Inverter Multi L within the running range 185 264VAC Does it occur during running of compressor Does it occur during frequen
64. M GMV Pdm900W2 NaB M 380 415V 3Ph 50Hz 380 415 V 3Ph 50Hz GMV Pdm950W3 NaB M 380 415V 3Ph 50Hz GMV Pdm1008W3 NaB M 380 415 V 3Ph 50Hz INSTALLATION 126 I VRFService Manual GMV Pdm1065W3 NaB M 380 415 V 3Ph 50Hz 125 GMV Pdm1130W3 NaB M 380 415V 3Ph 50Hz 125 GMV Pdm1180W3 NaB M 380 415V 3Ph 50Hz 125 GMV Pdm1235W3 NaB M 380 415V 3Ph 50Hz 125 GMV Pdm1300W3 NaB M 380 415 V 3Ph 50Hz 125 GMV Pdm1350W3 NaB M 380 415V 3Ph 50Hz 125 GMV Pdm1405W4 NaB M 380 415 V 3Ph 50Hz 160 6 0 6 0 10 0 10 0 GMV Pdm1456W4 NaB M 380 415 V 3Ph 50Hz 160 6 0 6 0 10 0 10 0 6 0 10 0 10 0 6 0 10 0 10 0 6 0 10 0 10 0 10 0 10 0 10 0 10 0 10 0 10 0 10 0 10 0 10 0 6 0 10 0 10 0 10 0 GMV Pdm1512W4 NaB M 380 415V 3Ph 50Hz 160 GMV Pdm1570W4 NaB M 380 415 V 3Ph 50Hz 160 GMV Pdm1650W4 NaB M 380 415 V 3Ph 50Hz 160 GMV Pdm1700W4 NaB M 380 415V 3Ph 50Hz 160 GMV Pdm1750W4 NaB M 380 415V 3Ph 50Hz 160 GMV Pdm1800W4 NaB M 380 415V 3Ph 50Hz 160 7 3 Wiring Sketch Map 6 0 10 0 10 0 10 0 6 0 10 0 10 0 10 0 10 0 10 0 10 0 10 0 10 0 10 0 10 0 10 0 10 0 10 0 10 0 10 0 7 3 1Wiring Sketch Map between Outdoor Unit The indoor and outdoor unit is energized separately 1 2 Max 4 sets Outdoor unit Outdoor unit Outdoor unit Electric box Electric box Electric box Communication wire LI L213 N Terminal Board LI L2 L3 N wire 1 1 SER enero 1 Adaptor CNI board BN
65. Multi aq Abnormal communication is the main and common trouble in communication system which mainly consists of the following groups S N Possible Cause Troubleshooting Abnormal communication between indoor unit and outdoor unit Communication wire between indoor and outdoor unit is not connected Outdoor unit do dl Indoor unit b Refrigerant pipe E6 Communication cable The polarities of communication wire connecting indoor and outdoor units are not inconsistent Outdoor unit 11 PCB peg communication error codes are displayed on all indoor and outdoor units Communication cable The communication wire connecting indoor unit to outdoor unit is short circuit Outdoor unit 2 Communication cable Check 1f communication wire 18 connected Exchange the polarities of plugs of communication wire Check it with universal meter and if it is short circuit replace the communication wire Address of indoor unit wired controller Check if their addresses or outdoor unit is not correctly set are set correctly Addresses of main board of outdoor unit Check if their addresses or patch board are not correctly set ar
66. No 2 Office No 3 Office No 4 Office No 5 Office No 6 Fe de Klum M M M A n eC 7 a 2 a a ar a gt n T n onitor Room eda n ae en a E dea ee n CONTROL 68 DC Inverter Multi VRFService Manual 6 4 1 Instruction to Distribution of Unit and Installation of Equipment This office building has been installed with 2 sets of units as shown in the table below Quantity of required communication modules pinboard Quantity of Corresponding rooms of indoor units indoor units Address of Address of Room communication module L2 unit 1 Officer 2 GMV Pdm450W NaB M 1 0 Office 3 Offices 4 Offices 5 9 10 Office 6 annm oo 17 Address of um of Room communication module unit Office 7 02 2 2 GMV Pdm280W NaB M Office8 8 Assembly 1234 room 1 03 EM B room 5 0 7 0 9 69 CONTROL DC Inverter Multi VRF Service Manual 6 4 2 Frame Diagram of System Net e ZI IT 9 ON 29110 J SS9Jppv 87 9 TRN as 5 01 6 SS9 1ppvy S ON 9 IJO C Ss9Jppv L ON 9910 8 L 589 9S SS9IDDV CON IFO 67S SS9 IDpV CON A quioss y
67. Size 4 3 The refrigerant pipe size from the outdoor unit to the first branch is decided by the capacity code of the outdoor unit Note When the distance between the outdoor unit to the farthest indoor unit exceeds 90m then the size of both the liquid and gas refrigerant pipes between the outdoor unit to the first branch should be enlarged by one level as listed in the following table 2 When the distance between the first branch to the farthest indoor unit exceeds 40m then the size of the liquid refrigerant pipe between the first branch to the farthest indoor unit should be enlarged by one level as listed in the following table 4 3 2 The diameter of the piping between branch joints the branch pipe Note When the actual pipe length exceeds 90m the pipe diameter shall be increased accordingly 4 3 3 The diameter of the piping from the branch joint branch pipe to the indoor unit Note When the actual pipe length exceeds 90m the pipe diameter shall be increased accordingly 4 4 Selection of Y Type Branch Pipe R410a refrigerant system Total Capacity of the Downstream Indoor Unit X X 200 FQ01A A 200 lt lt X lt 300 FQ01B A Y Type Branch Pipe 300 lt X x 700 FQ02 A 700 lt X lt 1350 FQ03 A 1350 lt X FQ04 A 99 INSTALLATION DC Inverter Multi Service Manual 4 5 Selection of Refrigerant Piping between Outdoor Unit and Outdoor Unit for module unit 4 5 1 Selection of co
68. The thermal insulation tube must meet the specifications insulation 2 Seal between the thermal insulation pipes to avoid air entry Installation of Air Duct 1 Design the length of air duct according to static pressure A 2 The air inlet shall be optimally designed to avoid too small size pressure duct type unit 1 The copper tube must meet the specifications 2 Ensure it is dry and clean inside the tube 3 Make sure to charge nitrogen as required for protection when welding the tubes Welding 4 Please keep to the welding process and ensure the system free of leakage 5 Add a dual way filter on liquid pipe side Installation 6 For multiple systems please mark them properly of 7 Carry out leakage detection under pressure after welding 1 Purge the system clean puse 2 Keep the pressure for 24 hours 3 Except for the influence by temperature it is deemed acceptable if pressure drop is within 0 02MPa With the temperature change by the pressure will change by approx 0 01 MPa 1 The thermal insulation tube must meet the specifications Thermal insulation VS 2 Seal between the thermal insulation pipes to avoid air entry 1 Select the installing position correctly 2 Build the foundation according to the anchor bolt position and the dimension of outdoor unit Installation of outdoor unit 3 Build the damping device properly 4 Avoid sharp knock when handling the outdoor unit The inclination angle
69. Und co alele sll Startup failure failure AC current protection input side PFCABNORMAL Error Description LEDI red LEDI LED2 LED3 Continous fast LED1 LED2 LED3 LEDS LED eow ETAT counts NL Pee re Compressor air out protection Overcurrent Protector The temperature of radiating fin is too high Radiating fin sensor abnormal DC input voltage ET too low Temperature drift Error with the temperature ECC on drive board ree re MAINTENANCE 168 VRFService Manual Fixed frequenc gt fo gt ope EOE Fan motor module Voltage proection of fan motor drive Current protection of fan motor drive 9 Overheat protection 9 a Communicationerror um FEBRE E board and main control Tete Overheat protection of fan motor and motor SS Communication error and outdoor units Defrosting normal operating not error Oil return operating normal operating not error Balancing oil normal 7 not error Online Online testing Outdoor ambient temperature sensor error Error with outdoor coil F inlet temperature sensor CIEL Indoor coil middle Outdoor coil middle F Variable frequency exhaust temperature Q F9 sensor error Fixed frequency 1 error a F Fixed frequency 2 error ii F with air out sensor
70. VRFService Manual IPM module is integrated with 3 pair complementary IGBT tube whose connection and disconnection are controlled through PWM so that DC bus voltage is imposed to the winding of compressor The magnetic field will enable the rotor to rotate for running of the compressor IPM module IPM module is integrated with 4 LED an 2 MOS tubes The AC power is converted into DC power and theconnection and disconnection of MOS tube are controlled through PWM so that voltage is increased PFC module 3 3 Wiring diadram This drawing 1 just for reference please always refer to the electric wiring stuck to the unit for actual wiring GMV Pdm224W NaB M GM V Pdm280W NaB M
71. View of GMV Pdm400W NaB M exploded views CJ F as opem le nl 47987 m ATO et MA P TR g W U N U TT Dl UN IN MO mu PQ B e Parts List of GMV Pdm400W NaB M for CN851W1030 Name Wert Ra N i e VRF Service Manual ss osso 1 223 MAINTENANCE VRE Service Manual Service Manual F e Co
72. air direction To avoid short circuiting please provide adequate suction space when multiple machines are to be installed In the region with snow the machine shall be installed in a frame or beneath the snow guard thus to prevent snow piling on the machine Do not install the equipment in a region where any inflammable gas might leak snow guard and other devices shall be designed and installed by the user INSTALLATION 92 VRFService Manual 3 3 Dimensions Data NOTE The picture of the units is only for reference everything goes by with the real object Lan Lot 93 INSTALLATION Service Manual 3 4 Clearance Data NOTE The picture of the units is only for reference everything goes by with the real object 3 4 Clearance data of single unit GMV Pdm224W NaB M GMV Pdm280W NaB M GMV Pdm335W NaB M GMV Pdm400W NaB M GMV Pdm450W NaB M Outline dimensions Unit mm Air outlet WY NN NN ZZ gt AS V SR x 2 SS Mo M NS ON SN Front Electrical box outlet on this side mmm SN er 2 VASTA SS x X X The wall on the four side of the outdoor unit should be in accordance with the above basic space requirement In case that the front side and left side or right side of the
73. and minute in 24 hour time system and also the week day 3 7 0 Shield It displays the shield status ALL TEMP MODE and On Off Weekly timer It displays the timing period unit 0 5 hour which will circulate every week Set temperature It displays the set temperature indoor unit code 01 16 and Indoor unit code symbols of Celsius and Fahrenheit scale It displays CENTER under the centralized control mode Control mode and no display under the single control mode Indoor unit code Numbers indicate the indoor unit codes which will be displayed when the corresponding indoor On off status unit is online indicates the on off status of the indoor unit its flashing for or else for off Error It displays the error codes when some error s arises and also Child lock CHILD LOCK when this function 1 activated E It displays the ambient temperature serial port as well as symbols of Celsius and Fahrenheit scale 47 CONTROL VRF Service Manual m Service Manual 5 4 Network Topological Diagram 5 4 Network of Simple Centralized Controller Non 16 16 Max 16 L VRF WR VRF System VRF System Smart Zone Controller Max 16 Indoor Units Fig 5 4 1 Note Simple centralized controller can connect to maximum 3 sets of VRF outdoor units but the indoor unit which it connects can t exceed 16 sets 5 4 2 Relationship
74. are within 5 C which means the standby pressure of the system is normal Pressure X Low pressure ras valve Liquid valve ENGINEERING DEBUGGING ENGINEERING Service Manual Service Manual 3 2 4 Inspection of Electrical System 1 Check if there 1s any electromagnetic interference mill dust and acid and alkaline gas around the units a Power supply of the units can t work with equipments with inverter or close to the equipment with strong eletromagnetic interference If there 15 any electromagnetic interference make record in time and if the situation gets worse the installation site must be relocated or corresponding measures must be taken b Prevent acid or alkaline gas or liquid from corroding cables of the units 2 Inspection of Appearance of Power Cord Inspect if power cords of units are installed according to requirements of manufacturer if the wire 1s firmly connected with wiring terminal and if there 1s any conducting wire exposed in other joints of the power cords Connecting wire Connecting wire Connecting wire inside the unit inside the unit inside the unit JN IN E LINER A 2 2 2 2 Patch 7 ABAE e een LI Le LS N L1 Le L3 N 2 2 Q Fixed mode of Fixed mode of 2 2 ES 4 presser bit inverted U shaped
75. controlled from remote controller When the setting 15 remote control mode its function dial up must be set on S7 Dial up switch 3 M S The setting of master slave indoor unit refers to the master slave setting of indoor run mode mainly used to meet the needs of special people on priority e g leader patients etc The factory default setting 1s that all indoor units are master dial up switch pulled to position When all the indoor units are set as slave the outdoor unit will run according to the mode of slave indoor unit that is firstly started If the mode of slave indoor unit started later has in conflict against the mode started earlier the system will display mode conflict error so that the indoor unit started later cannot work In this case the run mode of the unit is decided by the slave indoor unit that 1s firstly started When only one indoor unit is set as master no matter if the master indoor unit 1s firstly started or not the slave indoor unit will give out mode conflict error as long as its mode 15 in conflict against the mode of master indoor unit except that the master indoor unit 1s stopped In this case the unit run according to the mode of master indoor unit on priority When several indoor units are set as master the mode of master indoor unit with a lower address code will be taken as the master run mode of the unit when the master indoor unit with the lowest address code 15 changed from STOP sta
76. es owm ass 39 s us ow osso v 19 oo s s osso ossa 3e om o aes on om _ wur om ows o im s _ es om om 0 sis w _ oim ow o n w om ss os ss oae 3 sw s oss s oa os w 3 ies 3 s xw om essi o w 60 3 3e o o _ sw oa w w o o ate ae w oe oo _ 199 MAINTENANCE ii gt m oo oo VRE Service Manual Service Manual so w is wwe _ MAINTENANCE 200 VRFService Manual 4 3 50 Temp Resistance Volt Volt Resistance Volt Volt rn 3V oe 6 NUN 3V 956 56 0 054 054 006 036 LE ng 2 2300 eee ee a res e po om a oem neo m si poem um em se seo sum 24 ww ww ww sw 2566 m sm ww ww e us 260 m _ m sew ww we e oe x _ x sen eos wm se 9 m ss ee xm _ as ssa uw om n om xm aw a mw 261 se _
77. for error the address code of patch board and error code will be displayed alternately 2 FLOW CHART OF TROUBLESHOOTING The repair personnel shall collect the error information as more as possible for careful study and list those electric or system parts that might cause the error Then the repair personnel shall be able to identify the specific cause of error and find out the problem parts Keep an eye on the complete equipment Do not restrict to a part but taking care to check the state of complete equipment Study from the simple point o analyze judge and identify the cause of trouble please start from the simple operation and finally proceed to such complicated operations as discharge of refrigerant disassembly of equipment replacement of parts and filling of refrigerant Be prudent to find out the cause The unit might be incurred to multiple errors and such errors might be caused by multiple reasons It is also possible that one error 1s developed into multiple errors Therefore a comprehensive analysis system shall be set up to ensure that the result of judgment is more correct and reliable 2 1 High pressure Protection Error display on hand controller E1 Outdoor units mainboard indicator led4 dark led3 dark led2 dark led1 blink Indoor units mainboard indicators Patio indoor units red led blink green led dark yellow led dark FY wall mounting motor red led blink yellow led dark New FY wall mounting motor
78. oe s V ec NOTE The cooling only units have no amp mode After every indoor unit received the turn off signal the fan and electric inflate valve will continue to work for 20 70mins to make use of the rest cool or rest heat while for preparation for the nest work And this is normal phenomenon CONTROL 28 VRFService Manual A NOTE This type of remote control is a kind of general use remote control that is suitable for several types function of air conditioner units Please understand that the functions and buttons that are not suitable for this air conditioner will not be introduced Liquid crystal displayer It shows all set contents m AUTOFAN Am amp LO AIR SWING HUMID LIGHT SAVE 7 ONOFF fL 0 LA HR SLEEP button Press the button to set SLEEP mode and stop when repressed When the sleep mode is in the cool and dry mode the set temp will increases 1 27 during the set time then the unit will operate according to the temp When sleep mode is in the heat mode the set temp decreases 1 2 during the set time then the unit will operate according to the set temp SLEEP AIR LIGHT HUMID TIMER ON TIMER OFF ANION SAVE DE ON OFF Temp Timer button When the unit is operating increase 1 by pressing button once an
79. of detection control board The following items should be attended 1 Installation must be performed by professionals Either 220 240V or DC 5 24V is ok 2 Cut off the power of heavy current wire covered in the mounting hole in the wall before installation Never perform the installation with electricity 3 Press the bottom plate of the detection control board on the wall and then make it and front panel of detection control board together 4 At last fix the bottom plate and front panel of detection control board together with screw ST2 2X6 5 5 There shouldn t be any large power electric appliance and firming base nearby to avoid interference source 6 Avoid sunlight and rain and do not install it at wet space 7 Do not install the unit at the place where there 1 corrosive gas serious dust salt fog and oil smoke or which 15 specially wet 8 The detection control board must be installed at concealed place and far from water and fire CONTROL 86 VRFService Manual INSTALLATION 87 INSTALLATION VRF Service Manual Service Manual F INSTALLATION 1 PRECAUTIONS FOR INSTALLATION 1 1 Precautions for Safety Before installation please ensure if the installing site power ratings possible operating range pipe distance height difference between indoor and outdoor unit power voltage and installing space are correct and suitable The outdoor unit is general to all models according to its
80. of simple centralized controller remote monitoring and centralized controller PC amp Long Distance Monitoring System Central Conrolloer Max 16 e _ Communication Module Communication Module T Communication Module VRF System VRF System VRF System Port 2 VRF Port 3 VRF Smart Zone Controller Max 16 Indoor Units Fig 5 4 2 Note simple centralized controller can compatible to centralized controller remote monitoring But centralized controller remote monitoring has the priority CONTROL 48 DC Inverter Multi VRFService Manual 5 5 Installation and Debugging 5 5 Installation 5 5 1 1 Installation Dimension Diagram A CO 75 20 CO u u Y 120 r 3 i 45 15 at CY A E 1 x Fig 5 5 1 Installation Dimensions Diagram 5 5 1 2 Interfaces See Fig 5 5 2 for the interfaces of the display board and see Fig 5 5 3 for the
81. outdoor unit 1s open space No limitation to the height of the wall For the top wall e g air guard interference it 1s required over 3000mm distance between the unit top and the top wall in principle In case that the front back left and right sides are open to the around space it is required over 1500mm distance between the unit top and the top wall In case the distance is less than 1500mm or the unit is not open to the around space a air inlet is necessary for keeping ventilation INSTALLATION 94 DC Inverter Multi VRF Service Manual 3 4 2 Clearance data of multiple unit To ensure good ventilation the top of unit shall be kept open and free of any obstructions In case that the front side and left side or right side of the outdoor unit is open space the unit shall be installed in the same direction No limitation to t he height of the wall G S COMES gt 200 _ 5200 Max 4 sets side by side 21000 No limitation to t he height of the wall Max 4 sets side by side In case there are walls on four sides of the outdoor unit It is suggested to install the unit in the same direction 2 No limitation to the height of the wall Max 4 sets side by side DC Inverter Multi VRF Service Manual 3 5 Take Monsoons and Snow into Consideration The monsoon shall be taken into consideration when installing the outdoor unit The snow shall be taken into consideration when installin
82. power To ensure correct installation please make sure to read the Safety Considerations thoroughly before starting the installation works The considerations stated below are classified into WARNING and CAUTION Those that might cause death or severe injury in case of wrong installation are identified in A WARNING However those that are stated in CAUTION may also cause severe accidents sometimes Therefore both of them relate to important safety considerations and must be strictly followed After completing the installation and test run and confirming that all are normal please introduce to the client on how to use and repair the machine according to the Operating Instructions Besides please deliver the considerations herein to the clients together with the Operating Instructions and ask them to keep properly AN WARNING The installation shall be performed by the vendor or professional dealer from which you buy the machine If you install by yourself any improper installation might cause water leakage electric shock or fire accident The installation shall be done correctly according to installation instructions Improper installation may cause water leakage electric shock or fire To install a large air conditioning system in a small room please make sure to take measures to prevent that the refrigerant will not exceed the limit concentration in case of leakage For the measures to preven
83. size of copper pipe Minimum depth of Outer diameter of pipe D mm penetration Baum Clearance between pipes A D 0 05 0 21 015 8 0 05 0 27 19 05 922 2 925 4 7 10 0 05 0 35 If the mounting clearance 1 too large the diameter of coarse pipe may be reduced to an appropriate value to according to applicable specifications if any 5 6 3 Installation of branch pipe The branch pipe plays the function to divert the refrigerant flow Therefore the selection and installation of branch pipe is very important to the operation of multi unit Based on correct selection of branch pipe the branch pipe must be installed according to installation specifications Connection schematics for Y type branch pipe The connection of Y type branch pipe is as shown below The inlet is connected to outdoor unit or previous branch the outlet is connected to indoor unit or next branch Nd To other manifold pipe or indoor unit Site pipe Y type Manifold Pipe Outdoor unit Installation specifications for branch pipe Placement of branch pipe The branch pipe can only placed horizontally Meanwhile two branch pipes must be on the same plane The spacing between two branch pipes must be over 800mm the spacing between two bends must be over 800mm and the spacing between branch pipe and bend point must also be over 800mm INSTALLATION 110 VRFService Manual Enlarged view A Enlarged view B m
84. such as iron chippings adhering on the board Y It 15 recorded Yes Is IPM Yes module of mainboard damaged v Tighten the compressor wire or adjust the phase sequence Replace mainboard MAINTENANCE 190 DC Inverter Multi E E yr Service Manual 2 13 Trip Trip module on the mainboard Is leak switch trip open v Does switch capacity meet the requirements Does it trip v uponenergization Is PFC short circuit 1f AC contactors are conrected Ensure that there is not short circuit between P N Replace mainboard Check Are relays K8 ON the mainboard conrected Mount the electric switch according to the capacity requirements The system is abnormal Check the compressor wiring and winding for short circuit Leakage current is large Check the leakage spot and deal with it m M Wrong relay replace mainboard Replace mainboard Check line chart It is recorded and reflected 191 MAINTENANCE DC Inverter Multi Service Manual 2 14 Superheat Protection of Radiator the wired controller ES is displayed on Monitoring v Nixie tube of display
85. switch marked with capacity below used for setting the capacity of indoor units is factory set before shipment of indoor unit while it is covered by sealant so that it cannot be changed by the user Below is factory default setting Vo jl WWE x capacity L3 E s 139 INSTALLATION VRE Service Manual Service Manual The default Capacity dial up is the maximum capacity of indoor unit As shown above the capacity is See above for the lever position Dial up Value The dial up value of capacity code is set in binary system The dial up value 15 0 when the lever is dialed to ON end the dial up is 1 when the lever is dialed to numerical end on opposite side For number 4 1 on the capacity code the dial up 4 refers to high bit and the dial up 1 refers to low bit Dial up Table 4 bit Dial up Switch ___ a ___ ___ 3 __ INSTALLATION 140 ENGINEERING DEBUGGING VRE Service Service Manual ENGINEERING DEBUGGING 1 NECESSITY OF ENGINEERING DEBUGGING FOR VRF UNITS Different from common units VRF units has high requirements of design And also during engineering installation the factors which can affect the normal running of the system easily occur such as impurity and water Due to complexity of design and installation as well as requirements of high accuracy of syst
86. take care to protect the air conditioner and avoid knocking the metal parts thus to prevent rusting in the future Avoid direct sunshine as it might be The installing position must be able to drain the rainwater and the water generated from defrosting The installing position must ensure that the machine will not be buried in the snow or affected by the wastes or oil mist To meet the noise and vibration requirements the outdoor unit shall be installed by using rubber damping pad or spring damper The installing dimension shall comply with the installation requirements in these instructions The outdoor unit must be fixed at the installing position The installation shall be done by specialist technicians 3 2 Selection of Installation Site The place with no residual air The place where the accessories can be securely fixed The place where the air will not obstruct the water inlet pipe or water outlet pipe The place that goes beyond the heating range of other heat sources The place where the wastewater can be safely drained The place where the noise and hot air will not affect the neighbors The place where the snow will not be piled The place where the water outlet pipe will not be blown by strong wind Note Do not use guardrail on four sides Leave 1m at least above the machine In case of short circuit risk please install an adaptor changeable in
87. test under pressure Address Heat dial up insulation Heat insulation Connect indoor unit and outdoor unit Finish installation of indoor unit Leak test under pressure Vacuuming Add refrigerant Open the valve Debugging INSTALLATION 90 VRFService Manual 3 INSTALLATION OF OUTDOOR UNIT 3 1 Hoisting of Unit Transport the unit to a place as close as possible to the installing site before taking it out of the packaging box AN CAUTIONS Never put any object on top of the unit before and after installation To lift the machine with crane please use two ropes to lift the outdoor unit Hoisting Method The machine must be balanced when it is lifted Check and ensure that the machine can be lifted up safely and stably A CAUTIONS Do not attach the ropes to the lower wood frame of the packaging box Never remove any packaging materials As shown insert two ropes through the square holes on the machine and protect the machine with batten and corrugated paper Less than 40 Never remove the wood frame and plastic straps Rope The angle between rope and machine shall be higher than 60 Tie the ropes the batten and corrugated paper with a thickness not over 15mm
88. the specified refrigerant If any air is mixed abnormal high pressure will occur in the cooling circulation system thus causing crack or human injury accidents During installation please always use the attached parts or designated parts Failure to use the designated parts may cause water leakage electric shock fire or refrigerant leakage A CAUTION Please earth securely Do not connect the earth wires to gas pipe water pipe lightning rod or telephone line Improper earthing might cause electric shock Leakage circuit breaker must be installed at some place No installation of leakage circuit breaker might cause electric shock Do not install at a place where inflammable gas might leak Gas leakage and despot around the machine might cause fire accidents To ensure correct drainage of water the drainage pipe shall be installed according to the installation instructions Also the heat insulation shall be provided to avoid condensing Improper installation of the pipe might result in water leakage and lead to possible wetting of the articles in the room INSTALLATION 88 DC Inverter Multi VRFService Manual 1 2 Key Points of Installation Installation Procedures Description and Acceptance Criteria 1 The materials specified on the engineering drawing shall be purchased as specified e g copper tube thermal insulation tube PVC pipe power cables air switch etc 2 The materials not specified on
89. to be burned by flame and heating parts d Gas cylinder shall be handled carefully to prevent leakage e Combustible substances in the surrounding areas shall be moved away If movement is impossible fire proofing treatment shall be taken properly such as being covered by flame proof enclosure f Good ventilation is necessary to avoid breathe in of harmful gas g Appropriate measures shall be taken if there is a safety problem h Operation on connectors of branch pipes as well as on the surrounding of pipe ends shall be performed on the ground as possible because heating 15 difficult to control at a high place and welded part of a branch pipe is prone to be INSTALLATION 112 YRF Service Manual melted to cause leakage For example Weld the pipe approx 1m before and behind the reflared position and wrap with thernal insulation materials Then weld on higher position Approx Approx Im i To avoid the position difficult to weld you may add a prefabricated assembly below E A x Drainage pipe L3 1 3 3 a Difficult to weld at this position 5 7 4 Operation order Basic procedures for welding Assemble copper pipes Cleaning Check whether clearance is proper nitrogen Itrogen pressure 0 05 0 3Mpa Welding flux Welding hea
90. to enter cancel the Memory function If memory is set 4 2 Mode A indoor unit after power failure and then power recovery will resume the original setting state If not the indoor unit is defaulted to be off after power recovery Memory off is default before delivery By pressing them at the same time under off state of the unit Es will be displayed on the wired controller for the cooling only unit while 4 will be displayed on the wired controller for the cooling and heating unit Upon startup of the unit without malfunction or under off state of the unit press 2 6 V them at same time for 55 to enter the lock state in which case any other buttons won t respond the press Repress them for 5s to quit this state 1 pressing them under off state of the unit at the same time the Mode Func address of the wired controller will be displayed at once 2 By pressing them for 5s under off state of the unit at the same time the address setting 1s available Enter Cancel Func By pressing them simultaneously the address of the master wired controller will be displayed By pressing them for 5s under off state of the unit at the same time A Func the control of the master wired controller be canceled When the unit is turned off press them for 5 seconds simultaneously display Mode V panel will switch between and F In any conditions press them for 5 seconds to review status Under re
91. to the different running frequency and load the corresponding current varies among 7A 20A The normal temperature is lower than 95 C and 40 C will be displayed when the temperature is lower than 40 C The normal bus voltage is 1 414 times of that of power supply E g the voltage of the three phase power supply is 390V then the bus voltage after rectification should be 390vx1 414 551v with the tolerance of 15v e According to the different ambient temperature the inlet pipe temperature 15 1 C 7 C lower than that of the outlet pipe temperature under the cooling mode eUnder the heating mode the inlet pipe temperature is 10 C 20 C lower than that of the outlet pipe temperature of the same indoor unit eUnder the cooling mode the midway pipe temperature is some 0 C 5 C lower than that of the outlet pipe temperature eUnder the heating mode the midway pipe temperature 1s between those of the inlet and outlet pi Real time check through the monitoring software is realizable to the data from the main board and wired controller without occurrence of any malfunction The drainage of the indoor unit goes smoothly and thoroughly no condensate water 1s accumulated in the drain pipe and no water drips directly along the base frame of the unit The compressor and fan motor of the outdoor indoor unit run without any abnormal sound and any malfunction 5 COMMON TROUBLES DURING DEBUGGING 5 1 Communication DC Inverter
92. unwinding the thermal insulation materials may be damaged and cannot be recovered which will deteriorate the performance of thermal insulation Do not unwind carelessly Otherwise the fitting pipe might be flattened The copper pipe shall be rounded if the pipe end is deformed The higher the size the higher the possible deformation INSTALLATION 106 VRFService Manual 5 5 3 Measuring To reduce the resistance and length of copper pipe the dimension of main refrigerant pipe shall be so taken that the bends shall be minimized the radius of bend section shall be increased and the upstream and downstream section shall be reduced Use the method that can reduce the actual length and equivalent length of the copper pipe Sometimes the connection pipe of indoor unit must be adjusted due to the relation with accessories drainage pipe and connection surface Therefore a fairly marginal dimension shall be taken 5 5 4 Cut Chamfer It is convenient to adjust Cut a Cut vertically to axis direction by using special pipe cutter that is suitable to the dimension of copper pipe big medium small b During operation press and rotate the pipe cutter slowly and cut off the copper pipe without causing any deformation Never use saw or grinding wheel because the copper scraps may be left inside the pipe Even use of such tools once will make all works scrapped It is useless no matter how good the qual
93. user shall extend the wire according to actual condition The centralized controller and the communication module are connected together through a communication line with a crystal connector at both ends Close to the controller a magnetic ring 15 needed on the communication line and is approximately 10cm away from the crystal connector after wrapped two circles by the communication line During the installation the magnetic ring should be put inside the electric control box after the crystal connector 15 connected with the smart zone controller See the following figure for the connection manner and location 63 CONTROL DC Inverter Multi Service Manual Fig 6 2 5 2 Connection Manner of Crystal Connector Communication Line and Magnetic Ring Fig 6 2 5 3 Connection Location of Crystal Connector Communication Line and Magnetic Ring After completion of installing centralized controller and matched communication modules the technician shall set address and perform debugging of the communication modules to ensure normal communication 6 2 6 Debugging In order to ensure normal operation of the centralized controller the address of communication module shall be set after installation work Refer to Communcation Module Instruction for details Fill in the Installation Table refer to table 3 6 2 6 1 Address setting of communication module Set the address of communication module by the DIP switch Before operat
94. whether big leakage is existent at connections of the piping between indoor unit and outdoor unit 5 8 2 Cleaning steps a Mount a pressure gauge on nitrogen cylinder Nitrogen bottle Indoor unit A Outdoor unit B Air pipe The opening of the pipe not to be purged shall be blocked with blind plug b High pressure end of the pressure gauge is connected to the refrigerant filling nozzle of the small pipe liquid pipe c All copper pipe ports outside the A side of indoor unit shall be blocked by blanking plugs Copper pipe Blanking plug Block with insulation materials Copper pipe ports not to be cleaned shall be blocked by blanking plugs Quick release Cleaning process d The valve on nitrogen cylinder shall be opened to maintain pressure at 28K gf cm2 e Check whether nitrogen flows through the liquid pipe of indoor unit A f Cleaning The mouth of the pipe shall be blocked with insulation material held by hand until pressure rises to a level difficult to be withstood and at the moment the insulation material shall be released quickly And then the mouth shall be blocked again Repeat such procedures several times Afterwards use a wood board posted with white paper to check it If there is not evident dirt on the white paper the pipe will be considered clean g Shut off the main valve of nitrogen h Repeat the above procedures on indoor unit B 1 After cleaning of liquid pipe gas pipe shall be cleaned in the sam
95. 0 Container om o 0 09 o Loading Quantity 40 Container Loading Quantity 40 High Cube Container zi 24 16 Notes D The sound level is tested under circumstance of semi anechoic chamber the value of noise could be a little higher in actual operation The data will change with the change of products Refer to those parameters listed on nameplate 89 The charge amount of refrigerant in the list is the datum when there 15 not drop height vertically between indoor unit and outdoor unit without consideration of connection pipe So calculate the additional charge amount according to actual condition during installation Section area of lead wire is only applicable for 15 m distance If above increase the section area to avoid overload of current which would cause burnout of lead wire The outdoor fan of this unit is without static pressure If static pressure is required please specially notice it on purchase order 5 Running condition of cooling outdoor temperature 5 C 48 C Running condition of heating outdoor temperature 20 27 PRODUCT 6 DC Inverter Multi VRFService Manual Model GMV Pdm400W NaB M GMV Pdm450W NaB M GNEVSPdm2od y NaB M GMV Pdm280W NaB M i 136 48 153 54 171 964 E sw 45 so 55 Heating 153 54 170 6 192 778 Power Supply V Hz Ph 380 415 V 50Hz 3Ph Cooling kW 12 45 14 32 5 52 7 52 Pie Current Powe
96. 10 E5 Protection Error display on hand controller E5 Outdoor units mainboard indicator Indoor units mainboard indicators Patio indoor units red led blink red led blink green led dark yellow led dark FY wall mounting motor red led blink yellow led dark New FY wall mounting motor red led blink green led dark yellow led dark Hanging indoor units red led blink green led dark yellow led dark Note the drive errors are shown as E5 thus check the error indicators of the outdoor units first and find the specific error according to the code and refer to the following 2 10 Typical Troubleshooting E5 for DC frequency conversion drive board Abnormal overcurrent error If the compressor wiring is correct Adjust the compressor wiring If the current value is higher than the preset value of protector Replace the overcurrent protector If the high voltage of unit is normal Refer to high voltage protection Contact the power supply company The communication resumes to normal 187 MAINTENANCE VRE Service Manual Service Manual 1 The LCD will display current protection upon startup Current protection Is voltage of power supply normal Adjust parameter of power supply Disconnect compressor wi
97. 15 0 5 0 1kgf cm2 Nitrogen flow of 4 6L min gas flow can be sensed by hand shall be guaranteed to charge in work pieces After assembling nitrogen begins to charge until welding 15 finished and will continue over 10s during cooling after welding X Main points of nitrogen charge See the drawing below When nitrogen is charged the press switch on the quick connector and inflator shall be closed to let nitrogen totally filled in the pipe Make sure nitrogen reaches all welding connectors in order to effectively discharge air vent port must be available when nitrogen charge 15 continuously performed or otherwise gas would escape from gap around connector making welding stuffing difficult and prone to pores Places requiring protection during welding Nitrogen charge pipe Copper pipe x Copper pipe Vent port d Welding heating Notes Braze welding is flame hard braze welding Relevant safety operating regulations must be abided by e Confirm that nitrogen is flowing through before copper pipe 1s heated e Neutral flame or slightly reducing flame shall be used for red copper braze welding Outer flame is normally used Copper pipe connectors shall be heated uniformly Take care to distribute heat in terms of dimension of pipe material Generally insert pipe shall be preheated at first for close matching and then swayed along length of connector to make it heated uniformly until braze welding tempe
98. 3 inerface 1 2 3 inerface 1 2 3 Address code S2 Address code S2 Address code S2 CNI Communication Communication Pinboard 1 inerface Pinboard 2 inerface gt Communication inerface Pinboard 3 2 Indoor to indoor communiction 1 2 2 No n 16max gt 2 Indoor to indoor communiction 2 2 i No n 16max 129 DC Inverter Multi Service Manual 7 3 4 2 Communication between indoor unit and outdoor unit 15 realized by connecting mainboard of indoor unit and patch board of outdoor unit 1 When there 15 only one outdoor module and also the qty of indoor units 15 less than 16 the outdoor unit connect with indoor unit by communication wire which directly connect patchboard of outdoor unit to mainboard of indoor unit Communication wire is 2 pin twisted wire and its both ends are 3 pin XH plugs 2nd and 3rd positions are applied and shall be corresponding SINGLE MODULAR ON IP ON ON 1 ga m 1 4 2 2 Capacity code SWI Qty code Address SW2 code SW3 ommunication inerface Communication inerface CNI6 Communication interface EHI port of pinboards Mian board of out unit ON DIP COM OUT3 Communication Communication inerface inerface 1 2 Address code S2 I
99. 3767 3 930 912 3849 4 018 940 61 3932 4 106 1300 1337 1373 1413 1453 1493 1535 1577 1620 1664 1 300 1 340 1 380 1 421 1 463 1 506 1 551 1 596 1 641 1 688 1 735 Is 16 17 18 19 20 21 22 23 24 25 6 1 1 1 Oo GW Ww N GO 5 N 403 418 434 7 9 4 0 2 3 4 5 3 3 3 3 3 3 4 4 4 4 4 4 4 47 4 6 8 1 6 8 _ _ ee ee ee 203 MAINTENANCE VRE Service Manual Service Manual 5 2 Features of the Low Pressure Sensors R410a Ca E Lam LC Ee oem ERE Co o gt s Tia e e ess e ar I p aem Ca am Ce w Co J os o p ow Cs e O oe DOO gt wv 3 9 O N a Ca s ws O ox x we 4 p 5 w a 9 as 3 ws J p 099 p ox se um am Ca ow Te MAINTENANCE 204 VRFService Manual 6 AFTER SALES EMERGENCY MEASURES When some unrecoverable fault occurs to one module which is connected with several others in parallel the following emergency measures are recommended to guarantee the heating or cooling capacity of the indoor units and the service life of modules except the faulted one are not affected Step 1 set all indoor units under
100. B M GMV Pdm280W NaB M GMV Pdm280W NaB M Model GMV Pdm335W NaB M GMV Pdm400W NaB M GMV Pdm450W NaB M GMV Pdm450W NaB M GMV Pdm450W NaB M GMV Pdm450W NaB M 108 0 113 0 118 0 ooun E 368 469 385 556 402 616 apaci dnd 1215 126 5 131 5 Heating 414 558 431 618 448 678 Power Supply V Hz Ph 380 415V 50Hz 3Ph n 7 52 9 23 14 32 7 52 12 45 14 32 7 52 14 32 14 32 ower input E 7 70 9 38 13 9 7 70 11 2 13 9 7 70 13 90 13 90 13 44 16 50 25 6 13 44422 25425 6 13 44 25 6 25 6 urren 13 76 16 77 24 85 13 76 20 02 24 85 13 76 24 85 24 85 Recommended n NI 6 5 10 5 10 5 6 5 10 5 10 5 6 5 10 5 10 5 Power Lines Oil Pipe mm EE 1850 1850 1850 1850 1850 1850 1850 1850 1850 Net Weight 25543504370 25543504370 25543704370 Gross Weight 275 380 400 275 380 400 275 400 400 Loading Quantity 20 Container ee Loading Quantity 40 Container _ Loading Quantity 40 High Cube Container Notes D The sound level is tested under circumstance of semi anechoic chamber the value of noise could be a little higher in actual operation 2 The data will change with the change of products Refer to those parameters listed on nameplate 8 The charge amount of refrigerant in the list is the datum when there 15 not drop height vertically between indoor unit and outdoor unit without consideration of connection pipe So calculate the additional charge amount according to actual con
101. CONTROL VRF Service Manual O Service Manual N 5 SMART ZONE CONTROLLER 5 1 Function simple centralized controller can connect to indoor units of 3 sets of VRF outdoor units It can directly connect to 16 indoor units in a same network without adding communication module It can search status of a indoor unit and display it by LCD Controlled items are mode timer fan speed temperature of a single unit centralized setting and shield etc fa GREE 5 2 Operation View Mode Mon Wed Thu Confirm Cancel 1 9 2 10 3 11 4112 Fan 5 13 6 14 7 15 8 16 on off EN EN ai Lm Timer Time Central 3 gt Fig 5 2 mediam owore 1 Under the single centralized control status It is used to set the running temperature of the indoor unit with max 30 C anmin 16 C 2 Under the timing setting status It is used to set the timing period with max 24 hours and min 0 hour 3 Under the clock setting status it is used to set the hour max 23 min 0 and minute max 59 min 0 of the clock It is used for the switchover between unit 1 and unit 9 Under the timing or clock setting status it indicates Monday It 1 used for the switchover between unit 2 and unit 10 Under the timing or clock setting status it indicates Tuesday It is used for the switchover between unit 3 and unit 11 Under the timing or clock setting statu
102. Check if the indoor electronic expansion valve can work normally Engage the valve body with the coil es Yes Check if the indoor outdoor filters or radiating fins are dirty or blocked Refer to the Repair and Maintenance No Focus on checking the inlet and outlet of the connection between indoor units and main pipe Also focus on checking the electronic expansion valve of indoor The system pipe is blocked unit and outdoor unit Replace the electronic expansion valve drying filter and other parts 173 MAINTENANCE VRF Service Manual Service Manual 2 2 Low pressure Protection Error display on hand controller E3 Outdoor units mainboard indicator led4 dark led3 dark led2 blink led1 dark low voltage led4 blink led3 blink led2 bright led1 dark lack of refrigerant Indoor units mainboard indicators Patio indoor units red led blink red led blink green led dark yellow led dark FY wall mounting motor red led blink yellow led dark New FY wall mounting motor red led blink green led dark yellow led dark Hanging indoor units red led blink green led dark yellow led dark MAINTENANCE 174 UT ge rimini VRFService Manual Low pressure protection Use pressure gauge No to measure if the pressure is really low Refer to low pressure sensor error Yes Yes
103. Determine the direction and elevation of condensate pipe before installation To ensure the gradient smooth and straight avoid intersecting with other pipelines The height of the clamp fixing the pipe hanger frame shall be adjustable and fixed from the outer of thermal insulation 6 2 3 Distance between hanger frames Spacing between horizontal pipes mm 1000 1500 Spacing between standpipes mm 1500 2000 Each standpipe shall have two hanger frames at least 6 2 4 The gradient of condensate pipe shall be over 1 and the gradient of main pipe shall not be less than 0 3 while there shall be no overhanging slope 1cm 1m Over 1 100 6 2 5 When connecting the 3 way section of condensate pipe the 2 way straight section on 3 way pipe shall be on the same gradient The two ends of 2 way section shall not have different gradient See the schematics below Wrong connection Correct connection 6 2 6 Confluence toward the horizontal pipe shall be best from the upper Back flow is easy to occur if from the lengthwise direction Indoor Unit Mounting of horizontal pipe pipe A INSTALLATION 122 YRF Service Manual 6 2 7 Do not tie the condensate pipe and refrigerant pipe together 6 2 8 To ensure smooth drainage of condensate a vent hole shall be set at the highest point of drainage pipe 6 2 9 Carry out water flow test and full water test after the p
104. EMOTE CONTROLLER eee o rete e reete oreet ee eee ee Se 28 2 1 Marediess Remote Controller Ln 28 2 2 Wiredless Remote Controller Y BI EA a ssssacssspesccenseesnessssswadedesscessendevesascouesensvadcovensdepaevatoosbentersoeestees 3l 3 WIRED REMOTE CONTROLLER Ea NER SEE e aT EYE VE Rex FERRE 36 3 1 Wired Controller Z60351F Z60151F Z6335 LF ZO3 1S F ecce eere ee eee ee eere eee eene 36 Wed ontFoller X07 user 38 4 REGIONAL CONTROLLER sass coscssnssnenceccezesesseavssesesedasessacveessenvsaneeessecevecesenesesscedesssvocsesteeosss 42 mai MM 42 G 2 Uperatio n FT 43 MI T 44 4 4 Connection Between Controller and Unit cccccsssssscssccccssssssscccsccssssscccccccssscssccsscssssssccssesens 45 5 SMART ZONE CONTROLLER ESI STORE iaia 46 Wien E E E E 46 D2 OPEO NTON e TT UU TM 46 Did IS ee DT 47 Network lopological PIEVE TT CT TT TM 48 Sid tin 49 SOA RIAN n 53 6 CENTRALIZED CONTROLLER Po Rex EIN EDU 54 MZ c
105. IT C C T TT 126 6 4 Requirements OF Heat preservation iii 126 TLELECIKICALINSFPADLATION alli 127 TI Precautions for Electrical Installation esnsesss eS e VE Era VPE 127 7 2 Specifications Of Power Cord amp Circuit Breaker eee eee eee Leere eene eee 127 FD WARING m 128 Mr rec 137 ENGINEERING DEBUGGING ese sue Rs rase s 143 1 NECESSITY OF ENGINEERING DEBUGGING FOR VRF UNITS 143 2 ILES AND TOOLS FOR ENGINEERING DEBUGGING ecce eene enun 143 PAN MOONS m n 143 2 2 Debucscinb 143 3 STEPS OF ENGINEERING DEBUGGING cccccossesssonccssscsssoncccnsscsssonscssesssonsccasesssosess 143 Preparation before Debusgmoa 143 3 2 estin pedinare 144 Did MC IP TIT TT T ITI 149 34 Depuceme Ee naui 150 3 5 Running or Heating uin iria oda Poe ELE AVR EE CIERRE SEHE EXER TRE 153 3 6 When the debugging is finished
106. Inquiry state LOCK is displayed when selected indoor unit is locked B Control state LOCK is displayed during setting or giving the lock order Region wired controller LOCK is displayed when selected unit is locked in long distance monitoring Room temp or error code CONTROL 44 VRFService Manual 18 set temp Set temp value is displayed when the selected indoor unit is on and not in timer inquiry or setting status E HR LL is displayed during timer inquiry or setting 5 is displayed when the timer time value includes 0 5 hr and the unit is during timer inquiry or setting Contents in the double quotation marks indicate the display in LCD Following part is the same to it 2 Online indoor units to Mini Centralized Controller indicate that in a region Following part is the same to it No signal control function for region wired controller and SINGLE won t be displayed either 4 4 Connection Between Controller and Unit Insert the 4 core twisted pair line to wired controller if which is with the indoor unit into region controller wiring terminal or CN2 and then connect the other wiring terminal CN2 with the main board of indoor unit If there is no wired controller with indoor unit introduce a 4 core twisted pair line to indoor unit main board and connect it with region controller wiring terminal CN1 or CN2 Note Any main board of the ind
107. MER S E 13 02 1 9 9 CQ 6 5 Fig 6 1 2 CONTROL 54 VRFService Manual This central control has Sequence On function that enable conduction to sequence control to communication modular in interval of 2 seconds communication modular controls Sequence On of indoor units to lower impact to power network This central control has Sequence Off function that enable conduction of sequence 2 ALL OFF control to communication modular in interval of 2 seconds communication module controls Sequence Off of indoor units to lower impact to power network Set and check the time of Timer On and Timer Off of indoor unit and date mode It works as direction and adjusting under every operation function Such as When checking it can move to the required indoor unit or communication modular by using this button when adjusting time press LEFT RIGHT to shift Y M D etc and press UP DOWN to adjust value Under control mode press this button after setting state of indoor unit control CONTROL to indoor unit would be conducted by corresponding control mode LEFT RIGHT UP DOWN Press button under checking state to begin information check and set of grouped indoor unit grouped information 15 for select control SYSTEM TEST Begin setting of central control run mode it is not recommended to be used by users Shift display domain and indoor wired air condition control DOMAIN corresponding to display
108. ON OFF button indoorfan will continue running for about 10 min at low speed In this period press blow button to stop indoor fan directly 2 Having set blow function off After turning off the unit by pressing ON OFF button the complete unit will be off directly About AUTO RUN When AUTO RUN mode is selected the setting temperature will not be displayed on the LCD the unit will be in accordance with the room temp automatically to select the suitable running method and to make ambient comfortable About turbo function If start this function the unit will run at super high fan speed to cool or heat quickly so thatthe ambient temp approachs the preset temp as soon as possible About Blow over heat This function 15 applicable to partial of models When the unit 1 running in Heat mode or Auto Heat mode compressor and indoor fan 15 running to turn the unit off the compressor outdoor fan will stop running The upper and lower guide boardrotate to horizontal position then the indoor fan will run at low fan speed 10s later the unit will turn off About lock Press and buttons simultaneously to lock or unlock the keyboard If the remote controller is locked the icon will be displayed on it in which case press any button the mark will flicker for three times If the keyboard is unlocked the mark will disappear About swing up and down 1 Press swing up and down button continuously more than 2s the main uni
109. Outdoor ambient temperature sensor error Error display on hand controller F4 Outdoor units mainboard indicator led4 dark led3 dark led2 dark ledl dark Indoor units mainboard indicators Patio indoor units red led blink red led blink green led dark yellow led dark FY wall mounting motor red led blink yellow led dark New FY wall mounting motor red led blink green led dark yellow led dark Hanging indoor units red led blink green led dark yellow led dark 2 Outdoor coil pipe inlet sensor trouble Error display on hand controller F5 Outdoor units mainboard indicator led4 blink led3 dark led2 dark led1 blink 3 Outdoor coil pipe middle sensor trouble Error display on hand controller F6 Outdoor units mainboard indicator led4 blink led3 dark led2 blink 1 dark 4 Outdoor coil pipe outlet sensor trouble Error display on hand controller F7 Outdoor units mainboard indicator led4 blink led3 dark led2 blink 1 blink Indoor units mainboard indicators Patio indoor units red led blink red led blink green led dark yellow led dark FY wall mounting motor red led blink yellow led dark New FY wall mounting motor red led blink green led dark yellow led dark Hanging indoor units red led blink green led dark yellow led dark 5 Fixed frequency exhaust temperature sensor error Error display on hand controller F8 Outdoor units mainboard indicator led4 blink led3 blink led2 dark led1 dark fixed fre
110. RODUCT 18 VRFService Manual CONTROL 19 CONTROL VRE Service Manual Service Manual F CONTROL 1 CONTROL OF THE UNIT 1 1 Concept of Integral Control of the Unit 1 1 1 Unit Control Schematic Diagram Inverter drive control system 2 core communication cable 3 core pin header Adap for board __ Main control board of outdoor unit T Mainboard of Mainboard of OOS Mainboard of indoor unit indoor unit TN indoor unit communication Electronic 2 Relay output High and low expansion 9 control X pressure switch Display board Display board Display board valve protection input of indoor unit of indoor unit of indoor unit Indoor unit n 1 Indoor unit n Indoor unit 1 Outdoor Unit Indoor unit a maximum of 16 sets to be connected Air conditioning units can be divided into indoor unit and outdoor unit A maximum of 16 sets of indoor units can be connected to an outdoor unit 2 core 3 core pin header communication cable is used for the connection between indoor unit and outdoor unit Indoor unit is connected to display board via 4 core communication cable In engineering installation address dial up of the display board and the mainboard of indoor unit shall be dialed The address dial up of the mainboard of indoor unit must be identical with that of the display boar
111. TION 118 YRF Service Manual Wrap the thermal insulation pipes with tapes thus to extend their ageing time 5 10 2 Cautions The thermal insulation materials shall be able to withstand the pipe temperature For heat pump unit it is required to withstand a temperature not lower than 70 C on liquid pipe side and not lower than 120 C on gas pipe side For cooling only unit it is required to withstand a temperature not lower than 70 C on both liquid pipe side and gas pipe side Example Heat resistant PVC foam over 120 C Foam PVC over 100 C The connector between indoor unit and outdoor unit shall be wrapped with thermal insulation materials and shall have no clearance to the wall on which the outdoor unit 1s mounted as shown below ie No Gap When wrapping the thermal insulation tape each circle shall suppress half of the previous circle To avoid reducing the thermal isolation effect do not wrap the tapes too tight After completing the protection work and wrapping the pipes use the sealing materials to block the holes in the wall 5 11 Vacuum Pumping 5 11 1 Purposes of vacuum pumping Discharge air and nitrogen in the piping to obtain vacuum state Vacuum 15 dry capable to remove moisture in the system Under atmospheric pressure the boiling point of water 15 100 C But with increased vacuum degree created by vacuum pump the boiling point rapidly reduces If boiling point re
112. Type Units etc It can also meet the requirements of various building projects in the aspect of centralized management and monitoring for commercial air conditioners which is indispensable high tech product for intelligent control and information based management of the modern building 7 1 2 Function Instruction to Remote Monitoring System Remote monitoring system of the Multi VRF units can remote monitor all models of Gree current luxury Multi VRF units In comfortable office user can centrally manage and control max 255 sets of Multi VRF units by software installed in monitoring computer Specific models applied with the system are 1 16 indoor units of Multi units R410A heat recovery single unit inverter of Multi VRF modular Multi VRF units 900 digital Mutli VRF R22 digital heat pump units 1 32 digital Multi VRF units It is capable of remotely turning on of the unit modifying the mode changing the settings altering the fan speed and enquiring the status of the unit etc through the remote monitoring system BMS system 7 1 3 Product Accessories List Note The remote monitoring system GREE AC Eudenmon 2009 should be coupled with the latest communication module MC200017 ZJ6012 Optoelectronic Optoelectronic isolated LN02200010 Op omd Optional only when isolated repeaters repeaters RS485 Top meeting the condition M EN Communication module kit ME30 23 E M MC200017 Standard For uding communication module co
113. a 2800 cq p Connection of branch pipe The Y type branch pipe is installed with additional tube The purpose is to adjust the different pipe diameters If the pipe size selected on site 1s different from the size of branch connector please use the pipe cutter to cut from the middle of different connection pipes and remove the burrs Then insert the copper pipe to appropriate depth The branch pipes from Gree are all provided with positioning mark Branch pipe Copper pipe 1 1 l Cut from the middle Nd of copper pipe as LO Do not use the connection method that the copper pipe 15 cased on branch pipe of smaller diameter Correct connection 111 INSTALLATION VRF Service Manus Service Manual The copper pipe shall not be inserted into the branch pipe too deep Copper pipe Branch pipe Correct connection Wrong connection 5 7 Welding of Copper Pipe 5 7 Braze welding Materials for braze welding There are two kinds of braze welding soft braze welding and hard braze welding Hard braze welding is required in this case Selection of braze welding Red copper red copper brazing filler metal is Bcu93P GB 6418 and welding flux is not needed Flame flux capable of preventing the surface of copper pipes from oxidation recommended for use Temperature for braze welding 820 860 C copper pipe becomes light red 5 7 2 Safety acknowledgement before operation a R
114. a feedback signal will be sent out to stop the unit immediately so as to protect the compressor It is used to prevent the high pressure reverse gas going into the inverter compressor at the moment that the compressor stops so as to avoid abnormal startup next time and other problems Service Manual 17 PRODUCT VRE Service Manual Service Manual It is used to prevent the high pressure reverse gas going into the Check valve for STD1 STD2 fixed frequency compressor at the moment the compressor stops so as to avoid abnormal startup next time and other problems It is used to separate the gas and oil so as to Oil separator guarantee the reliability of the compressor It is used to prevent the high pressure reverse gas goin Check valve node prev mds RE into the modules at the moment that the unit stops Four way valve It is used to change the status of the heat exchanger Heat exchanger It is used to exchanger heat outdoor Check valve It is used to reduce the pressure loss of the refrigerant flow It is used to adjust the degree of superheat and then Electronic expansion valve adjust the refrigerant flow to ensure the reliability and sufficient heat exchange of the system Receiver It is used to store unused refrigerant to avoid abnormity Check valve for cooling It is used under the cooling mode gt E gt Solenoid valve for heating It is used under the cooling mod
115. achine joint and waterproof points Generally such positions refer to the branch pipe joint pipe ends four sides of indoor unit and wall cross hole 5 5 Management and Machining of Refrigerant Piping 5 5 Storage Atter receiving the refrigerant pipe and other components do not move them to the storage until confirming that they have no deformation bend crack or damage The pipe end must be sealed to prevent the invasion of moisture or wastes The copper pipe with coating may become deformed under the compression of the coating material so that the coils shall be placed upright To avoid the invasion of moisture or wastes a support higher than the ground must be built by using woods Care of pipe end during construction The pipe ends must be well cared during construction According to the working position work progress and surrounding environment the most effective way 15 to seal the end and wrap with adhesive tape 1 Sealing method Clamp the pipe end and weld on it TET Clamp the pipe end to flat and weld on the clearance Then charge nitrogen 2 Skgf cm2 This will be more effective 2 Method for wrapping with adhesive tape Seal the pipe end with ethylene tape 5 5 2 Unwinding the coil A CAUTION 6 When unwinding the coil take care not to drag it on the ground The coil shall be slowly unwound on ground without any twisting In case of excessive compression by any hard object during
116. al embedded parts cannot be used due to design change the expansion bolts may be used Subsequent Installation of Expansion Bolts The foot pedal shall be supported on three points if exceeding 2m The foot pedal must be fixed securely to the ladder Please do not work on the top of ladder 5 4 Installation of Carriage of Refrigerant pipin 5 4 1 Fixing of horizontal pipe The refrigerant pipe will extend and shrink with each start or stop of the air conditioner unit 5 10 times hour Under a temperature difference of 80 C this extension may reach 13 84mm for every 10m To prevent failure the pipes must be reinforced as follows Spacing between supports Outer diameter of pipe mm 6 35 8 52 Over 12 7 Spacing between supports m Below 1 2 Below 1 5 Note If the gas pipe and liquid pipe are suspended together the size of liquid pipe shall prevail N CAUTION Never make the pipe directly contact with the fixing metal parts Thermal insulation shall be provided around the fixing metal parts otherwise condensing will occur 105 INSTALLATION Service Manual INI Service Manual 5 4 2 Fixing of vertical pipe The vertical pipe may be fixed by using the commodity tools in market or self made tools As above the fixing point shall also be thermally insulated 5 4 3 Fixing of other points Measures shall be taken to prevent the extension or shrinkage of pipes from causing excessive loads to some positions m
117. all mounting motor red led blink green led dark yellow led dark Hanging indoor units red led blink green led dark yellow led dark Pressure sensor error Check if the plug of high pressure sensor is correctly connected to the socket Check the orientation of plug and socket Measure if the output value Yes DC voltage of the outdoor mainboard socket is normal Replace the high pressure sensor Replace the mainboard of outdoor unit Troubleshooting steps for low voltage sensor and high voltage sensor 2 Low voltage sensor error Error display on hand controller Fd Outdoor units mainboard indicator led4 bright led3 bright led2 blink led1 blink 179 MAINTENANCE Service Manual Service Manual Indoor units mainboard indicators Patio indoor units red led blink red led blink green led dark yellow led dark FY wall mounting motor red led blink yellow led dark New FY wall mounting motor red led blinkl green led dark yellow led dark Hanging indoor units red led blink green led dark yellow led dark 2 7 No energization to the unit and mainboard No energization to the unit and mainboard Check the units main wiring board Check if the power of wiring L1 if N voltage is 220V board is in trouble Check if the air switch of the units is ON Turn the air switch
118. already tightened power the unit on again and see if it will still come into protection YES YES YES Replace the compressor drive board and see if it will still come into protection NO Replace the broken down compressor It is finished Method to test if the IPM Module IS Shortcut 1 Preparation before check prepare a universal meter which 1s turned to the diode option and then remove the wires U V W from the drive board of the compressor which has been powered off for one minute 2 The test comes into two steps Step 1 put the black probe of the universal meter on the place P and the red on the wiring terminal U V W respectively to measure the voltage between UP VP WP Step 1 put the red probe of the universal meter on the place N and the black on the wiring terminal U V W respectively to measure the voltage between NU NV NW 3 If the measured valves between UP VP WP NU NV NW are all among 0 3V 0 7V it indicates the IPM is normal if there 1s any value which is OV it indicates that the IPM module is damaged 183 MAINTENANCE DC Inverter Multi Service Manual 3 Solution to the DC Bus High Voltage Protection DC Bus High Voltage Protection Check if the input voltage is larger than 460V Replace the compressor drive board It is finished 4 Solution to DC Bus Low Vol
119. alve of gas pipe and cut off valve of liquid gas pipe need to be opened ENGINEERING 4 4 DEBUGGING DC Inverter Multi VRFService Manual B uw A Open the Cut off valve of liquid pipes MW Open the Cut off valve of F IM nigh pressure gas pipes Open the Cut off valve for B Oil balance pipe when the quantity DONDE of modular is more than one 2 Check if the refrigerant 1n the system is normal by manomenter connecting liquid pipe and valve of low pressure gas pipe In normal conditions if the system has been stoodby for more than 3 min the high pressure and low pressure of the system will be in balance The difference between saturation temperature corresponding to pressure value and ambient temperature the temp is indoor temp or outdoor temp whichever 15 the higher can t be more than 5 Note make sure that the system 15 not started up or it has been energized for more than 10 min since last stop of running The lower outdoor ambient temp 15 the longer time that the pressure value stabilizes or the high pressure value of the system will be much higher than the ambient temp or the low pressure of the sytem will be much lower than the ambient temp Eg If outdoor ambient temp is 30 C indoor ambient temp is 28 C high pressure value of the system is 28 and low pressure value is 27 all differentials between outdoor ambient temp and the others
120. and the address of them 15 0 to 253 0 1s generally unused it must specify the address of communication module needed to be controlled It is ADDRESS SETTING which is not recommended to operate by users The debugging personnel can press SYSTEM DEBUG into system setting interface After pressing UP DOWN LEFT or RIGHT button press CONFIRM button into the interface for selection between ADDRESS SETTING and INITIALIZE SETTING The operation procedure of ADDRESS SETTING 1 The centralized controller without energizing and setting will display following ROOM TEMP Mon ate H Brour BH Min Display Present Unit No 00 00 which means soft address 00 No 00 indoor unit Soft address 1s the No displayed in 1 64 grid of LCD Press SYSTEM DEBUG into system setting interface After pressing UP DOWN LEFT or RIGHT button press CONFIRM button into the interface for selection between ADDRESS SETTING and INITIALIZE SETTING Then press UP or DOWN button to switch between them i INITIALIZE J dis vear E E Moni H ate E Bou ROOM TEMP Fc Hard address SYS ADDRESS SET INTAUZE id vea IE Moni E ate BB HE Min Press LEFT or RIGHT button to switch between SOFT and Hard ADDRESS settings and UP or Down button to adjust their values After adjustment press CONFIRM button to make the address values corresponding and effective If the c
121. antity of indoor units by check is inconsistent with that of the installed indoor units address setting the communication module and connection of the communication wire shall be checked again ALL SHIELD TEMP SHIELD PR OCESSINU MODE SHIELL 88 88 Tos pe 99 88 88 88 WIH SAT Fig 6 2 6 6 65 CONTROL Service Manual Installation Table Table 3 Installation Table Present indoor unit no Indoor unit location Region no indicates online region no 1 64 displayed by the centralized controller Indoor unit no indicates online indoor unit no 1 16 displayed by centralized controller 8 Present indoor unit no indicates present indoor unit no displayed by centralized controller Indoor unit location indicates actual location of centralized controller which is expressed by indoor unit Room Floor 6 2 7 Attachment Error Code List Error code list of GMV VRF CONTROL 66 DC Inverter Multi Freire MT ir 5 JE hkhk EEE E p ERES bb EEE EE EEE Tie Service Manual Address DIPI Address value value DIP table of communication module DIP table of communication module DIPI 67 CONTROL VRF Service Manual Service Manual F 6 3 Connection Between Controller and Unit Communication network The following 1 a brief sketch of communication net of multi variable units
122. be dismantled because activities of dismantling or mounting pressure gauge would affect pressure change Check pressure drop Criteria for Inspection eligibility X Except for temperature influences pressure changes about 0 01 MPa for temperature change of 1 C if pressure drop is not more than 0 02MPa within 24h the system will be eligible For example nitrogen 15 filled to reach 2 5MPa at 30 C after 24 hours when temperature becomes 25 the system will be eligible if pressure 15 over 2 43 MPa and ineligible below 2 43 MPa X If ineligible leak sources must be located After leak sources are found re welding or repair welding is necessary Then the above procedures shall be repeated Nitrogen 15 filled pressurized and maintained until pressure drop remains within required range Leak check Check 1 When pressure drop is found leak hunting shall be performed in the ways as follows a By ears to listen voices related to leakage b By hands to sense whether leakage is existent at connecting parts Check 2 If no leakage is found using the above methods nitrogen shall be discharged and refrigerant shall be filled in to reach 0 5MPa a By soap and water soap bubbles will show leakage positions if any b Detector such as halide detector can be used for leak hunting Using the above methods check all possible leak sources If leakage still fails to be located sectional check shall be taken f
123. cation line 7 3 3 Communication of GREE D C inverter units includes 1 Communication between outdoor unit and indoor unit 2 Communication among indoor units 3 Communication among outdoor units modules combination 4 Communication among patch boards of outdoor units when the patch boards need to be added 5 Communication Connection Diagram The communication among modules is connecting in engineering installation Driving Driving f f Mainboard Mainboard DOSSO compressor compressor Driving board Driving board of fan of fan Patch boardP Module l atch board Module 2 The communication between indoor unit and patch board and the communication among indoor units are connecting in engineering installation INSTALLATION 128 Mainboard of indoor unit Mainboard of indoor unit Mainboard of indoor unit Mainboard of indoor unit DC Inverter Multi VRF Service Manual 7 3 3 2 Communication Mode of GREE D C Inverter Units 1 All communication modes are 485 communications 2 Network of indoor units outdoor unit 1indoor unit to indoor unit 2 pin twisted wire is applied for communication among indoor units and its both ends are 3 pin XH plugs 2 and 3 positions are applied and shall be co
124. ch board Communication wire among outdoor units is not correctly connected Outdoor unit Sn Communication cable Outdoor unit Communication cable Replace communication wire 157 NGINEERING DEBUGGING DC Inverter Multi VRF Service Manual DAJLA uorsuedxo 911399 9 Jo eq pue yooyo Aj enue Ar MOP oy SMO e oJoqA oov d 0 DAJLA JJO m y uedoo yooyo JO POPPIN osneg Jo uonduoso q 1 BULIOU SI 49891 ST JI 99104 Sureoq pue surjodid suryono Aq 19591 SI uorsuedxo 9114999 JI yoyo 272183909 pu 9ZISIOUD 9q sdoup 10 95001 SI IOT Jo JO POPPIN UOSBAL PA9 PUOIIS osne Jo uonduoso q asned o qissoq 9 OT 1940 107 dwa juorquie uey SI UN JO edid Jo duro STd08t 01 SI uorsuedxo usq pow Sureoq Q ST 1940 10 duro o ur ULY SI JO edid 109 Jo duro Jopno STd08t 01 peuedo SI onoo o usq SUI OOD uJ JO POPPIN JOU SOOp
125. ch can be canceled only after powering off and then powering on the unit CONTROL 84 DC Inverter Multi VRFService Manual 8 3 Detection Control Board Interface Sketch is shown in Fig 2 Wiring terminal XT x7 ACL AC N suspended in the middle connects Fa Interface connected with gate control with mainboard of signal input The ul voltage should be about 2207 indoor unit 2 core GRZS A VIS 2008 08 20 Wiring terminal KY FEV 24 suspended in the middle connects S with gate control Ri Signal input The valtaze of signal b should be between V45Y to 24 V Fig2 Detection Control Board Interface Sketch The gate control function can be realized after the detective interface of detection control board connects with interface of gate control card and signal interface of it connects with the mainboard 8 4 Products Parameters Model MK03 gate controller Working Voltage AC 220 240V 50HZ or DC 5V 24V Power IW Working temperature 10 48 8 5 Installation of Detection Control Board Base box of socket installed Bottom plate Description in the wall a hole with of detection LxWxD 100mmx100mmx50mm control board Front panel of detection control board Screw M4X25 Note Detection control board with LxWxH 73 5mmx73 5mmx33 0mm 85 CONTROL VRF Service Manus i Service Manual Fig 3 15 about installation process
126. cting pipe 012 7 012 7 127 nc T Net Weight 370 370 255 255 350 255 255 370 Gross Weight 400 400 275 275 380 275 275 400 Loading Quantity t 20 Container _ Loading Quantity 40 Container _ Loading Quantity 40 High Cube Container Notes D The sound level is tested under circumstance of semi anechoic chamber the value of noise could be a little higher in actual operation The data will change with the change of products Refer to those parameters listed on nameplate 8 The charge amount of refrigerant in the list is the datum when there 15 not drop height vertically between indoor unit and outdoor unit without consideration of connection pipe So calculate the additional charge amount according to actual condition during installation 0 Section area of lead wire is only applicable for 15 m distance If above increase the section area to avoid overload of current which would cause burnout of lead wire 5 The outdoor fan of this unit is without static pressure If static pressure is required please specially notice it on purchase order Running condition of cooling outdoor temperature 5 C 48 C Running condition of heating outdoor temperature 20 C 27 C PRODUCT 10 DC Inverter Multi VRFService Manual Model Combined unit GMV Pdm1065W3 NaB M GMV Pdm1130W3 NaB M GMV Pdm1180W3 NaB M GMV Pdm280W Na
127. ction Inspect appearance to check if the installation of pipeline conforms to standards if jnsulation work of discharge pipe is good and if communication wire can meet requirements of installation standards The refrigerants pipeline shall be installed vertically and the inclination degree of branch pipe shall be within the specified range If there is any thing which can t conform to installation standards make record in time for analysis during debugging Refrigerants pipeline and condensate discharge pipe can t be directly exposed Repair it if there 15 any pipe exposed or serious loss will be caused Incorrect insulation wor u Insulating material of copper pipe is broken sae 143 ENGINEERING DEBUGGING Service Service Manual F 3 2 3 Inspection of Refrigerating System 1 Before debugging make sure that cut off valve of each module is in the maximum opening angle and in the meantime check if there 15 any mark of oil on the valve If there is inspect the valve immediately and if confirm that there is any leakage stop the debugging immediately which can be resumed again after the problem of leak has been solved If the cut valve of outdoor unit has been in the maximum opening angle Oil stain lt If there is any leak CE Note if there 15 only one outdoor module the oil balance valve can t be opened and cut off v
128. ctor on liquid side Vacuum pump Start the vacuum pump and turn LO and HI knobs b Continue for 0 5 1 0 hour after the vacuum level reaches 0 1MPa gauge pressure lkgf cm2 Then close the knob on high pressure end and VL knob on low pressure end to stop the vacuum pump c Remove the hose connected to vacuum pump and reconnect it to the refrigerant tank Expel the air in the hose Open the VL knob on low pressure end to charge refrigerant to the system piping When the pressure reaches 0 0kgf cm2 close the VL knob on low pressure end d Remove the hose connected to refrigerant tank and reconnect it to vacuum pump Start the vacuum pump and open the knob on high pressure end Pump for 30 minutes from high pressure end and then open the knob to pump from low pressure end until the vacuum level reaches 0 1 MPa gauge pressure 1kgf cm2 If the vacuum level reaches 0 1 MPa gauge pressure or lower the vacuuming process is then ended Stop the vacuum pump and place still for 1 hour Then check the vacuum level for any change In case of any change it indicates that there 1s leakage In this case proceed to leakage detection and repair e When the procedures for vacuum pumping are finished refrigerant shall be charged 5 12 Refrigerant Charge 5 12 1 Calculation method for refrigerant charging Refrigerant shall be charged according to calculated amount specif
129. cy drop of compressor How many times does 1t occur within 1 hour v Replace mainboard It is caused by slowdown of the compressor If it always happens inspect the compressor It is caused by interference Inspect wiring or interference source Take some actions prevent interference Y The voltage is too high Please cut off the power immediately in case damaging the unit or causing fire accident It is recorded and reflected 193 MAINTENANCE Service Manual F 3 POWER DISTRIBUTION 3 1 Diagram of Power Distribution Control signal of temperature sensor electronic expansion valve high and low pressure switch ect Filter board Mainboard ncn Control signal of 4 way valve gas bypass electric heating tape ect The thick lien represents power line while thin line represents the control line 3 2 Introduction of Main Electric Parts of Inverter System It is mainly used for filtering the intererence of the power supply and prevent the unit from interfering the power supply so that the operation of the unit will not affect the other electric appliances such as TV Wave filter Connect or disconnect the main Air switch oi Ic Wy n circuit with overcurrent and short circuit protection function MAINTENANCE 194 DC Inverter Multi
130. d decrease 1 by pressing button once The indoor temp can be set in the range of 16 30 Press the Timer OFF TIMER ON button at operating stopping to set the off on time Press Timer OFF TIMER ON once to increase 0 5 hour for the set time The Max value of setting time could be 24 hours when repressed it the setting time will be canceled 29 CONTROL Service Service Manual 2 1 1 Operation procedure Normal procedure 1 Press ON OFF button after connected with the power then the unit 15 operating 2 Press MODE button to choose the need operation mode 3 Press FAN button to set the fan speed 4 Press button to set the need temp Selectable procedure 5 Press SLEEP mode to set the sleep state 6 Press TIMER OFF button to set the set time NOTE When the operating mode selected by the indoor unit 1 clash with the one selected by the outdoor unit the remote controller will display the operating clash after 5 seconds and the power light will flicker then the indoor unit turns off At this time the units will become normal after the operating mode of the indoor unit is changed to cooperate with the outdoor unit Cool mode can cooperate with dry mode and fan mode can cooperate with any mode 3 1 2 How to insert batteries Two batteries Two AAA dry cell batteries are used by the remote control 1 Remote the cover from the back of the remote control downward take ou
131. d be more than 4 5MPa b Record the pressure ambient temperature and testing hours c Pressure modification when the temperature changes for 1 the pressure will change for 0 01 MPa d The pressure should be stable e If it is necessary to retain the pressure the pressure should be decreased to 0 5MPa or below The long time high pressure may lead to leak of soldering spot which may cause safety problem f Before completion of airtight test for refrigerant pipe do not wrap the soldering spot or horn mouth connecting spot During pressurizing pressurize the outdoor side pipe at the same time instead of pressurizing only one side pipe pressurize the bid and small pipe together Note Before completion of airtight test for refrigerant pipe do not wrap the soldering spot 5 10 Heat Preservation of Refrigerant Piping 5 10 1 Connection of thermal insulation pipe Carry out thermal insulation to the refrigerant pipe after confirming that it has no leakage Please perform thermal insulation to the refrigerant pipe according to the steps below Check if the thermal insulation pipe has met the thickness requirements If not the condensing water is easy to attach on thermal insulation pipe and finally drips The thickness requirements are shown below Wrap the refrigerant pipe according to required thickness The clearance between thermal insulation pipes shall be sealed with self adhesive sticker INSTALLA
132. d by using hanger bolts thus to ensure a gradient of 1 100 PVC cannot be bent The spacing between the supports of horizontal pipe is 0 8 1 0m Twisting will be caused and thus air bag will be formed if the spacing 15 too high Once the air bag is formed the pump can only compress the air bag no matter how forcible it pushes but there 15 no flowing water thus resulting in abnormal water level This will cause flooding of the ceiling 6 2 16 If the air flow of indoor unit is high this might cause negative pressure and result in return suction of outdoor air Therefore U type water trap shall be designed on the drainage side of each indoor unit Indoor unit Install water trap as shown below Install one water trap for each unit Installation of water trap shall consider easy cleaning in the future Indoor unit Joint INSTALLATION 124 YRF Service Manual 6 2 17 Connection of drainage branch pipe to the standpipe or horizontal pipe of drainage main pipe The horizontal pipe cannot be connected to the vertical pipe at a same height It can be connected in a manner as shown below N01 3 way connection of drainage pipe joint 3 way connection of drainage pipe joint NO2 Connection of drain elbow Connection of drain elbow NO3 Connection of horizontal pipe Connection of horizontal pipe Drainage pipe 15 requisite for air conditioner unit
133. d of the same indoor unit Address dial up of different indoor unit must vary Multi VRF indoor unit 15 applicable to all digital or inverter outdoor units Controller of outdoor unit falls into two categories in terms of its function 1 main control system and inverter drive control system 1 1 2 DC Inverter Unit 1 Main control system A Functions main control system shall be connected to indoor unit through 2 core 3 core pin header communication cable in order to receive start or stop commands mode setting temperature and ambient temperature from indoor unit determine operation mode of outdoor unit and through calculation based on capacity decide proper running frequency which shall be sent to the drive control system through 2 core 3 core pin header communication cable Fan speed shall be regulated according to system pressure Real time monitoring of temperature sensors operation state and protection of unit shall be performed to ensure normal and stable operation of the whole system Protection codes of outdoor unit shall be displayed on the LED on the main control board when failure occurs When drive is at fault E5 shall be displayed on the display board of indoor unit and specific failure type shall be indicated on the LED on the main control board of outdoor unit B Input and output controlled variables Sensors include ambient temp sensor tube inlet temp sensor tube middle temp sensor tube outlet temp sensor comp
134. displaying the indoor setting temperature or indoor ambient temperature When the indoor unit firstly power on it will display the setting temperature if the temperature s displaying status 15 changed from other status to fT displays the ambient temperature 5s later or within 5s it receives other remote control signal that will return to display the settingtemperature if the users haven t set up the temperature displaying status that will display the setting temperature This function is applicable to partial of models After powered on the setting temperature displaying is defaulted according to customers requirements to display if there is no requirement that will default to display the presetting temperature and there is no icon displayed on wireless remote control Press this button When displaying f will display presetting temperature when displaying 77 will display indoor ambient temperature TEMP buttonTEMP f current displaying status will not be changed If current CONTROL 32 VRFService Manual displays indoor ambient temperature if received the other remote control signal it will display presetting temperature 5s later will back to display the ambient temperature This function 15 applicable to partial of models TURBO In Cool or Heat mode press this buttoncan turn on or turn off the Turbo function After turned on the Turbo function itssignal will be displayed When switchingthe mode or changing
135. dition during installation 0 Section area of lead wire is only applicable for 15 m distance If above increase the section area to avoid overload of current which would cause burnout of lead wire The outdoor fan of this unit is without static pressure If static pressure is required please specially notice it on purchase order Running condition of cooling outdoor temperature 5 C 48 C Running condition of heating outdoor temperature 20 27 11 PRODUCT Service Manual IBN Service Manual 8 Model Combined unit GMV Pdm1235W3 NaB M GMV Pdm1300W3 NaB M GMV Pdm1350W3 NaB M GMV Pdm335W NaB M GMV Pdm400W NaB M GMV Pdm450W NaB M Model GMV Pdm450W NaB M GMV Pdm450W NaB M GMV Pdm450W NaB M GMV Pdm450W NaB M GMV Pdm450W NaB M GM V Pdm450W NaB M 125 0 130 0 135 0 ooun E i 426 500 443 560 460 620 apaci Heating 477 680 494 740 511 800 Power Supply V Hz Ph 380 415 V 50Hz 3Ph 923414 32414 32 12 45 14 32 14 32 14 32 14 32 14 32 ower input 9 38 13 9 13 9 11 2 13 9 13 9 13 90 13 90 13 90 mm 16 5125 6125 6 22 25 25 6 25 6 25 6 25 6 25 6 urren 16 77 24 85 24 85 20 02 24 85 24 85 24 85 24 85 24 85 Recommended NI 10x5 10x5 10x5 10 5 10 5 10 5 10 5 10 5 10 5 Power Lines Pipo ferreri mm mm EE 1850 1850 1850 1850 1850 1850 1850 1850 1850 Net Weight 350 370 370 350 370 370 370 370 370 Gross Weight 380 400 400 380 400 400 400 400 400 Loading Quantity 20
136. duces below ambient temperature moisture in piping will be evaporated If vacuum is OKgf cm2of absolute pressure gauge pressure is moisture in the system can be evaporated totally 5 11 2 Selection of vacuum pump Proper vacuum pumps must be selected before vacuum pumping Insufficient capacity of selected vacuum pump would lead to overtime of vacuum pumping and fall short of the requirement for vacuum degree proper vacuum pump can obtain vacuum degree of OKgf cm2 gauge pressure 1 Kgf cm2 after vacuum pumping Features of a vacuum pump shall be determined by two factors as follows Selection of a pump that can meet expected requirement 1 e gauge pressure of 0 1 MPa shall be obtained Exhaust flow is high over 40L min The following vacuum pumps are recommended Use Model Maximum vacuum air displacement Air discharge Vacuum drying Comparison table of different pressure units is as follows Absolute pressure kg cm2 1 033 555765555 ww mm 119 INSTALLATION Service I Service Manual 5 11 3 Vacuum pumping The steps are as follows a Expel the nitrogen after leakage detection Connect the pressure gauge to Freon nozzle on outdoor liquid valve and gas valve and connect a vacuum pump Then establish vacuum simultaneously from high pressure side and low pressure side Pressure gauge connector valve Connector on gas side Conne
137. duct type unit 3 When the setting of control mode is L the function dial up for setting of memory mode and setting of master slave indoor unit will be disabled When the setting of control mode is this function dial up setting 15 enabled 4 The dial up switch shall be put to position correctly and shall not be put to middle position Dialing of the switch to ON position indicates 0 and the dialing to opposite direction indicates 1 5 After dialing up please mark the address code of the unit V um BI Functional dial switch S7 le ee T HT Mainboard of 5 bit functional dial up 137 INSTALLATION DC Inverter Multi VRF Service Manual Functional dial switch S7 Mainboard of 4 bit functional dial up 7 4 2 Address code Address dial up must be set for the multi indoor units otherwise the abnormal communication will be caused to the unit The address code has 4 bit dial up in total The highest address is 16 and the lowest address is 1 N NOTES To use multiple indoor units in parallel make sure to change the setting of address code before installation and guarantee that the address code of each indoor unit must be different The address code is located on the mainboard of indoor unit If wired controller is used make sure to dial the address code of wired controller to the position same as the address code on corresponding indoor unit The address code of
138. e Check valve It is used under the cooling mode Filter drier It is used to absorb moisture in the system so as to avoid ice plug or copper plating on the surface of the compressor oO It is used to detect the real time high pressure for High pressure sensor protecting the compressor and other controls It is used to detect the real time low pressure for Low pressure sensor protecting the compressor and other controls It is used to protect the system running under low pressure Solenoid valve hot gas m EE p or the compressor starting with pressure difference N Solenoid valve liquid bypass It is used to prevent the compressor running at high temperature It is used to prevent the compressor runnin Accumulator prev high humidity condition N N Solenoid valve INV It is used to return the lubricant to the inverter compressor Solenoid valve STD1 STD2 It is used to return the lubricant to the fixed frequency compressor Solenoid valve Oil balance It is used to balance the lubricant among modules It is where the low pressure can be measured and refrigerant can be charged for after sales maintenance Liquid pipe It is the pipe to pass the refrigerant liquid of the system Gas pipe It is the pipe to pass the refrigerant gas of the system Oil balance pipe It is the pipe to balance the lubricant oil between modules N N ON Servicing valve N N N N P
139. e Manual Air supply running C Air supply running b Guide Louver Guide louver is swaying i Fan running at set speed Electronic expansion valve controlled in air supply mode Drying running Drying running Guide Louver Guide louver is swaying Fan running low speed Yes Is restart being avoided 3 minutes 4 Temperature No regulation v Fan stop Electronic expansion valve Electronic expansion valve capacity control stop 25 CONTROL VRE Service Manual Service Manual 1 3 Operation Flow Chart of Outdoor Unit The unit is powered on The electronic expansion valve initialized Air suppl Air supply or temperature gt regulation Temperature regulation Is restart being avoided Tes gt 3 minutes Abnormality indicator of outdoor unit bright Is abnormality I Yes ndicator of outdoor Press the run stop switch unit is bright Y No Abnormality indicator of outdoor unit bright Cooling Heating Y Cooling or heating 4 way valve On while heating Off while cooling and air supply dcum D D Outdoor electronic expansion valve stop Compressor stop CONTROL 26 Cooling R
140. e correctly set The communication wire connecting outdoor unit and indoor unit is short circuit or it contacts metal when it is damaged Outdoor unit bud Communication between indoor unit and outdoor unit is not continuously E6 Communication cable Check it with universal meter and if it is short circuit replace the communication wire Seperately mesure the two polarities of communication wire and check if it is shorted to earth The ground wire which shield communication ean IS wire 15 not efficiently earthed 155 NGINEERING DEBUGGING DC Inverter Multi VRF Service Manual ENGINEERING DEBUGGING 156 Abnormal communication between indoor unit and outdoor unit Communication of a part of indoor units 18 abnormal Communication between indoor unit and outdoor unit 15 not continuously E6 is displayed in one or a few of indoor unit s For some indoor unit the data is not always displayed on wired controller or the unit is on and off alternately E6 are displayed on all indoor units which connect a same patch board Communication wires of different patch boards in the side of indoor units are crossed Outdoor unit Indoor unit PCB Communication cable zu Outdoor unit Indo
141. e debugging install and get familiar with the software for debugging 3 3 Debugging 3 3 Cautions 1 Before the debugging starts make sure that the units have been energized for more than 8 hours so that the compressor can be preheated Touch the unit by hand to check if the preheating is normal and if it 1 debugging can be started or the compressor 15 likely to be damaged The debugging must be conducted or under guidance of the professional outdoor uint Electric box If it has been preheated for hours 2 When the debugging 15 started up choose proper running mode according to the ambient temperature When ambient temp is above 20 C the debugging mode shall be complete cooling mode When ambient temp is lower than 20 C the debugging mode shall be complete heating mode 3 When debugging the system will start one indoor unit every 5 min until all indoor units have been started up 148 DEBUGGING DC Inverter Multi VRF Service Manual TU dep OFF OFF 5 min later a PRO OFF OFF ees 5 min later Outdoor unit 3 4 Debugging of Cooling Mode Stepl make sure that the compressor has been preheated for over 8 hours before first startup of it Step 2 Connect monitoring instrument of debugging Step 3 After the monitoring instrument has been installed check if the communication of data is normal if all indoor units and wired controllers can be viewed on monitoring sof
142. e distance between them should keep above 15cm The following figure is an example of centralized control cabinet but its design should be according to quantity of communication modules CONTROL 72 E Manual VRFService Manual C Connection of communication modules 1 of communication module can connect with indoor and outdoor unit The two can connect with other communication module or centralized controller As shown in the following figure To Unit Other Module D Connection between communication module and indoor and outdoor units According to the net diagram connect the communication line between indoor unit and outdoor unit Then cut off the communication line between the mainboards of indoor unit and outdoor unit as shown below 4 2 main broad of OUD 73 CONTROL VRE Service Manual Service Manual F Align the cutting terminals and terminals of communication line to COMI as shown below 1 li a e d 1 i In this case there two methods to connection of them Method 1 Welding Weld the two cutting terminals by yellow to yellow and brown to brown as shown below And then weld the terminals of communication line to COMI with the welding spots in the above figure together by yellow wire to brown wire as shown below CONTROL 74 ll nine YRF Service Manual At last wrap the weldin
143. e same time yellow led blink New FY wall mounting motor red led blink green led blink yellow led blink Hanging indoor units red led blink green led blink yellow led blink Communication error DC Inverter Multi VRF Service Manual Check ifthe No Check the orientation communication line of indoor o oio and okot unit is connected plus Yes Measure if the No Replace communication line is through the communication line Yes Check if the No Check the orientation communication line of indoor anc of plug and socket outdoor unit is connected c orrectly Yes Check if the Please mount the included magnetic ring wo ends of communication lin are mounted with magnetic ring Yes Check if the outdoor e No Please supply power unit is electrically powered to the outdoor unit Yes If the address codes of indoor units in the same system are No Change the repeated address codes repeated Yes If the address code of wired controller complies with the address code of the connected Change the address code of wired controller indoor unit 177 MAINTENANCE VRF Service Manu m Service Manual 2 5 Temperature sensor Trouble 1
144. e way INSTALLATION 116 ____________ service Manual YRF Service Manual 5 9 Pressure Maintaining and Leak Hunting 5 9 1 Pressure maintaining of refrigerant piping After refrigerant piping of a system is welded A refrigerant filling nozzle shall be welded respectively on the big pipe and on the small pipe on the outdoor unit side Pipes connected to the end of indoor unit and outdoor unit shall be clamped to be flat and welded to be sealed Enter into the step of connection pipe pressure keeping and leak hunting Operating Steps Check Complete the Pressurization m pressure drop Finish installation of piping jo eee E Locate and repair leakage Use nitrogen to add pressure from Freon nozzle of the gas and liquid pipe on outdoor unit side Pressurization Step 1 Increase the pressure to 0 3MPa and wait for 3 minutes or longer Step 2 Increase the pressure to 1 5MPa and wait for 3 minutes or longer The step 1 and 2 are focused on checking the significant leakage point If any reweld immediately or repair the leakage point Step 3 Increase the pressure to 2 5MPa and keep it for approx 24 hours to check the small leakage Though the pressure is increased to 2 5MPa it cannot be guaranteed to find out the small leakage if the waiting time is too short Therefore the pressure in Step 3 must be kept for 24 hours Note During pressure maintaining after nitrogen 15 filled the pressure gauge shall not
145. ection between indoor units and main pipe Also focus on checking the electronic expansion valve of indoor unit and outdoor unit Replace the electronic expansion valve drying filter and other parts The system pipe is blocked 175 MAINTENANCE Service Manual Service Manual m 2 3 Exhaust Temperature Protection Error display on hand controller E4 Outdoor units mainboard indicator led4 dark led3 dark led2 blink led1 blink Indoor units mainboard indicators Patio indoor units red led blink red led blink green led dark yellow led dark FY wall mounting motor red led blink yellow led dark New FY wall mounting motor red led blink green led dark yellow led dark Hanging indoor units red led blink green led dark yellow led dark xhaust Temperature Protection Measure if the resistance of temperature sensor 1s correct Measure if the No exhaust temperature of compressor reaches 118 When the exhaust temperature of compressor 15 higher than 1071 check if the correspondi iquid bypass plug is connected through f Replace the correspondin Replace the mainboard of outdoor unit p 5 exhaust temperature sensor Yes heck if the corresponding liquid bypass sub assembly is in good condition e g if the solenoid valve is in good condition and if the capillary pipe is blocked No R
146. electric Box De energization Firstly inspect if the components inside the electric box dropped off during transportation and then check if there is any loose components or wiring For huge units the terminal of patch board and wiring terminal shall be screwed up again and after the units have been running for 2 months screw them once again Due to the auxiliary contact of AC contactor has been debugged in factory it disassembled 6 Cautions of Laying the Power Cord The trunking and flame retarded PVC pipe shall be used when laying the power cord and for huge sized power cord the cable supporting sytem shall be used Don t expose the power cord under sunshine or rain a Relationship of Power Current and Width of Cable Selection of Cable Category Rubber PVC Width of Cable Firstly figure out the distance between electric cabinet and the unit and then the total length of cable Finally check the Q km according to the model of the cable to determine the width of cable 146 DEBUGGING VRFService Manual Width of Cable mm2 M 15 30 30 50 50 75 75 100 100 125 125 150 5 2 5 4 10 25 4 20 ___ NN 38 5 38 5 mem Pt EN E NN EEG EN NN o om om NIA E N I 2 10 10 25 35 35 50 70 70 70 95 95 95 120 150 150 185 40 300 400 1
147. em control debugging must be conducted after finish of the engineering installation The units can be used after the debugging passes 2 ILES AND TOOLS FOR ENGINEERING DEBUGGING 2 1 Tools Electric Scale Calculagraph Gree portable debugger CE40 24 E or P debugging software and data wire There are two kinds of debugger for Gree VRF units One is portable debugger and the other is the computer with exclusive software Both of them are exlusive and shall be applied to manufacturer Note the model of Gree portable debugger 1s CE40 24 E Both two kinds of debuggers can inspect and debug the required parameters The only difference between them is that the portable debugger can t display parameters of all indoor units and storage or display history data while the PC with exclusive software can do such things Please refer to corresponding instruction for specific operation methods 2 2 Debugging Files In order to record the events of installation and debugging for the unit make sure that the following files are complete Confirmed plan for debugging cahier personnel for debugging appearance inspection record of the system debugging data record debugging report etc The reference form sets forth in attached list 3 STEPS OF ENGINEERING DEBUGGING 3 1 Preparation before Debugging 3 1 1 Integral Debugging Plan Before debugging acquire information of debugging scheduling total workload of debugging factors which may a
148. end section 5 5 6 Flaring The flaring refers to expansion of pipe opening The copper pipe 15 inserted here to replace the casing pipe In this way it 1 only needed to weld on one position where the pipe 15 expanded Solder IP a T i 109 INSTALLATION VRF Service Manual m Service Manual 5 6 Installation of Refrigerant Piping 5 6 1 Precautions on piping works At the site of transport storage and construction the two ends of copper pipes shall be sealed with plastic sealing caps Before welding copper pipes must be cleaned washing the inner side of pipe with alcohol to ensure no dust and no water in pipeline Nitrogen filled welding shall be used for the welding of copper pipes Nitrogen pressure shall be 0 5 0 1kgf cm2 Nitrogen flow can be sensed by hand When multiple multi connected units are installed refrigerant piping must be marked to avoid confusion between pipes of different units A two way drier shall be mounted at the liquid pipe side at the place where an outdoor unit is connected 5 6 2 Assemble copper pipes The copper pipe shall be vertically inserted to the specified length The centerline of two assemblies shall overlap The position shall be determined for welding To ensure correct mounting size do not determine the position with your hands thus to prevent the copper pipe from moving when heated See below for the welding
149. eplace the liquid bypass sub assembly d Yes When the exhaust temperature of compressor 15 higher than 1020 Whether the openness of corresponding indoor unit electronic expansion valve is increased No Check if the electronic expansion valve is correct Yes hange the outdoor unit mainboard Change corresponding electronic Yes expansion valve Sub Assy When the exhaust temperature of compressor is higher than 1101 Whether compressor reduces its capacity No hange the mainboard chip of outdoor units Yes Check if the capacity output of outdoor unit is equal to the capacity demand of indoor units No E efer to the dial up of indoor and outdoor uni n Yes Notes 1 The AC frequency conversion machine includes air out senor and shell top sensor 2 The temperature protection point in different machines are different 3 There 15 no liquid refrigerant by pass in frequency conversion machine Repair the leakage of system pipe and add refrigerant according to the required volume MAINTENANCE 176 ir TTT CC 2 4 Communication Error display on hand controller Outdoor units mainboard indicator led4 dark led3 blink led2 blink led1 dark Indoor units mainboard indicators Patio indoor units red led blink red led blink green led blink yellow led blink FY wall mounting motor red led blink dark at th
150. equial to 16 the indoor and the outdoor Indoor to indoor communiction 2 No n 16max Qty of indoor unit is less than or equial to 16 131 INSTALLATION DC Inverter Multi VRF Service Manual 3 When the qty of outdoor units 15 more than 2 and the the qty of indoor units 1s not more than 16 sets the indoor to outdoor communication 15 realized by connecting one indoor unit to a patch board of one outdoor module 2 NO 1 MODULAR NO 2MODULAR ON ON ON ON 1 2 1 2 1 2 1 2 Capacity code SW1 Qty code Address Inverter drive plate Capacity code SW1 Qty code Address SW2 code SW3 inside the unit SW2 code SW3 Communication inerface Communication ommunication Communication inerface inerface wS T o next 5 CN16 ian boar CNII CN17 CNI2 A CN17 A dee Mian board CN12 A modular of out unit CN13 B CN18 B Communication 13 B c anaanane A inerface of out unit 2 2 4 4 ON DIP A ON DIP ON DIP COM OUT3 Communication inerface 2 B Communication inerface 2 B 2 B Communication Communication inerface inerface 1 2 3 1 2 3 1 2 3 Address code 52 Address code 52 Address code 52 Inverter drive plate inside the unit Communication Pinboard 3 i Communication inerface Communication inerface
151. etely as below uum E Digital switch 77 CONTROL Address DIP S3 Address from 32 to 63 DIP S2 s qe pepe olo SEDER SERED ESES ife ESES dep ESES SEXES NENNEN afi ESES NENNEN ERES SERERE efef i i CURAE ENKNE afif ESEESE mn D ON en U ON Address DIP 53 Address from 0 to 31 DIP 52 ppp eje REALI SERED EXE ENKN fife ESES VEZES ESES NENEN SERERE efef Eee EXERE Set DIP for address according to the following table DC Inverter Multi VRF Service Manual CONTROL 78 DC Inverter Multi VRFService Manual Un n o Address from 96 to 127 Un Address from 64 to 95 79 CONTROL VRF Service Mana Service Manual Step 4 System Setting of Centralized Controller SYSTEM SETTING includes ADDRESS SETTING and INITIALIZE SETTING The former one is used for setting address of control object communication module and the latter one for initializing the data in the centralized controller including clear all the finished address settings Since the centralized controller can control at most 64 communication modules
152. f lead wire is only applicable for 15 m distance If above increase the section area to avoid overload of current which would cause burnout of lead wire The outdoor fan of this unit is without static pressure If static pressure is required please specially notice it on purchase order Running condition of cooling outdoor temperature 5 C 48 C Running condition of heating outdoor temperature 20 C 27C PRODUCT 8 DC Inverter Multi VRFService Manual Model Combined unit GMV Pdm730W2 NaB M GMV Pdm785W2 NaB M GMV Pdm850W2 NaB M er GMV Pdm280W NaB M GMV Pdm335W NaB M GMV Pdm400W NaB M DES GMV Pdm450W NaB M GMV Pdm450W NaB M GMV Pdm450W NaB M m ooun i 249 076 272 960 290 020 Capacity e o 3s Tse 9 Heating 278 078 307 080 324 140 Power Supply V Hz Ph 380 415V 50Hz 3Ph mE 7 52 14 32 9 23 14 32 12 45 14 32 ower input p 7 70 13 90 9 38 13 90 11 20 13 90 c 13 44425 6 16 50425 60 22 25 25 60 urrent 13 76 24 85 16 77 24 85 20 02 24 85 Brazing Connection Brazing Connection Brazing Connection Connecting pipe Dimensions ii 850 850 850 850 850 850 g 1850 1850 1850 1850 1850 1850 Net Weight 2554370 3504370 3504370 Gross Weight 277154400 380 400 380 400 Loading Quantity 20 Container Loading Quantity 40 Container o Loading Quantity 40 High Cube Container Notes D The sound level is tested under c
153. fan speed thisfunction will be canceled automatically e 7 Press this button to set up swing angle which circularly changes as below 21 Ls Ls gt A OFF 24 8 21 This 1s an universal use remote controller If remote controller sends the following threekinds of status that the swing status of mainunit will be x gt lt 21 2 When the guide louver start to swing up anddown if turn off the Swing the air guide louverwill stop at current position which indicates the guide louver swings upand down between that all five positions TIMER ON Timer On setting Signal ON will blink and display signal will conceal the numerical section will become the timer on setting status During 5 seconds blink by pressing or button to adjust the time value of numerical section every press of that button the value will be increased or decreased 1 minute Hold pressing or button 2 seconds later it quickly change the way of change 15 During the initial 2 5 seconds ten numbers change in the one place of minute then the one place is constant ten numbers change in the tens place of minute at 2 5 seconds speed and carry During 5s blink press the Timer button the timer setting succeeds The Timer On has been set up repress the timer On button the Timer On will be canceled Before setting the Timer please adjust the Clock to the current actual time TIMER OFF Once press this key to enter into TIMER OFF
154. ff memory function about the details 4 Wand Selection A Check the control mode of region monitoring controller region wired controller 7 ON OFF of function B Set the control mode of region monitoring controller region wired controller Note D The characters with gray back ground indicate buttons Following part 1s the same to it 2 The time of single press of the button is more than 3s which means successively press 8 There isn t the function that the region wired controller shields other indoor wired controller DC Inverter Multi VRFService Manual 43 CONTROL VRE Service Manual Service Manual 4 3 Display View a N SINGLE LR T _12 13 14 15 16 de dE ec ERROR ERROR ROOM SHEILD AES FORCE ane m TIMER N N N 6 06600 OO OG i 000 GX9 0 OO LL e eS J e Fig 4 3 Display name Instruction to display Inquiry state INQUIRY is displayed 1 Control mode Single control state SINGLE is displayed Centralized control state CENTER is displayed Each indoor unit running mode is displayed ERROR is displayed during any malfunction to indoor or outdoor unit in a group 4 is displayed when there is no malfunction to selected indoor unit and the ambient temp is below zero Fan speed display Hi mid low or auto speed of indoor fan 15 d
155. ffect the debugging required human and material resources Related responsible person shall make the debugging plan ENGINEERING 12 DEBUGGING N i ln VRF Service Manual 3 1 2 Members of Debugging Members of debugging include aftersales debugging personnel and installation personel etc members of debugging shall take relative professional training before debugging of the unit Group these people according to practical situation Professional of debugging and assistant are essentaial for each group 3 1 3 Preparation of Tools and Equipments a Check if the following tools or equipments are complete before bebugging Electric Scale Calculagraph m Gree portable debugger CE40 24 E or P debugging software and data wire b Check if the software is correct before debugging Debugging of Gree VRF units applies exclusive debugging software or portable debugger which are provided by Gree or the units can t be effectively debugged c Check if all required files and recorded data are complete 3 2 Inspection before Debugging 3 2 1 Inspection of Installation Environment Inspection of installation environment includes heat exchange environment of the unit electromagnetic radiation components etc which shall be in accordance with related national electric standards If there is any thing which can t conform to installation standards make record in time for analysis during debugging 3 2 2 Appearance Inspe
156. g seam should be free from defects such as pore slag inclusion underfill rosin joint and overlap Weld spot 5 7 5 Others When braze welding is to be performed underneath a simple support shall be built such as two ladders Solder n Solder 7 F r F a Downward CT um INIT 115 INSTALLATION Service Manual Service Manual Cooling o avoid getting a burn in following processes common wet cloth humidity content is low meaning that there shall not be water drips when welded part 1s cooled and because shrinkage factor of copper is different from that of welding material too quick cooling that would cause cracking of braze welding shall be avoided can be used for cooling welded parts The following items shall be checked after welding is completed e Is there any pore or hole on welded part e Is there evident sagging of brazing filler metal 5 8 Cleaning of Refrigerant Piping After a section of pipeline is welded cleaning of piping is necessary Nitrogen pressure is utilized to remove foreign matters such as dust water and beryllium oxide caused by welding in the piping 5 8 1 Main purposes of cleaning are as follows To eliminate oxide caused by insufficiency of nitrogen filled protection during pipe welding To remove foreign substances and water that may enter the piping due to improper storage and transport To check
157. g spots with insulating tape and test conduction performance of the three communication lines as shown below Method 2 Triple adapter Make crystal heads for the three lines The connection direction should be the sameas in the above welding figures i e yellow to yellow and brown to brown wire of indoor and outdoor units but yellow to brown wire of communication line to crystal heads are as follow Insert the three crystal heads into the triple adopter and test conduction performance of them as shown below 75 CONTROL VRE Service Manual Service Manual E Connection of Communication Modules and Centralized Controller Connection of COMI of communication module which has 3 COM total has been introduced as the above COM2 can connect with another communication module or centralized controller as shown below m HN Step 3 There are two methods of DIP address setting of communication module Method 1 The address of each communication module has been fixed in the factory and marked on the label at the back of it It is unnecessary for users to set anything In addition the 3 digital DIP can not be dialed to OFF completely as shown below li Label for address of communication module CONTROL 76 VRFService Manual Method 2 Manual setting of address as operated the following 1 Dial the digital switch at the back of communication module to OFF compl
158. g the outdoor unit Correct Seasonal windS easonal wind Seasonal wind Guard E 7 Return air AK UO Tar a fe WN T y WM E Return air COTW AIMS Incorrect The defrosting time will be prolonged in this way Seasonal wind Return air WII Vi To prevent snow from covering the air outlet and air inlet it is required to use an protective cover on air outlet and air inlet and use a higher foundation base INSTALLATION 96 Correct Protector of air inlet provided at field Protector of air inlet provided at field Seasonal wind gt 4209009000 CJ O O O O Col Height of base in consideration of snow 4 INSTALLATION REQUIREMENTS OF REFRIGERANT PIPING 4 1 Specification R410a refrigerant system External Diameter mm inch Thickness mm External Diameter mm inch Thickness mm DC Inverter Multi VRFService Manual 4 2 Allowable Length and Height Differences of the Refrigerant Piping between the Indoor and Outdoor Units Height difference between indoor unit and outdoor unit H D The Ist branch sectio L5 TL Outdoor unit L2 L3 LA Equivalent length of farthest pipe L The equivalent length of the farthest pipe from the Ist branch L L6 L7 L8 amp Q Q The equivalent length 15 0 5m for each Y type branch pipe Height diffe
159. hooting during Installation of Centralized Controller Generally speaking connection of communication lines address DIP of communication module and address mapping setting of centralized controller are the common problems during installation of centralized controller These problems can be reflected from running indicator green of communication module Meanwhile it 1s recommended to debug the centralized controller after making communication of outdoor and indoor units smooth to simplify the problems A Connection of communication lines 1 If incorrect or non connection of communication module centralized controller and communication line of indoor and outdoor units the green indicator will be black all the time 2 It indicates connection problem between communication module and centralized controller that green indicator blinks once every 2s In this case COM2 must be used to connect them 3 It indicates connection problem of communication module and indoor and outdoor units that green indicator blinks twice every 2s In this case COMI must be used to connect them Refer to Step 2 C for details To Other 2 Module B Address DIP of communication module There are two methods for address setting The one is that communication module has been set by software store but the 3 digital DIP switch can not be dialed to OFF completely The other one is to set it manually but the 3 digital DIP switch should be dialed to OFF completely
160. ication network Without repeaters the communication wires distance can be up to 1 km Note this centralized controller shall be used with communication module ME30 00 E2 or ME30 24 E2 M 6 2 2 Operation View 5 GREE ALL ON ALL OFF GROUP NO INDOOR UNIT BB BB COOL FA 4 du SWING N AM i 01 08 09 17 24125 ROOM TEMP ALL REGION sa 4041 49 56 57 LN Cui INDOOR 01 09 icr SET TEMP ici TEMP SHIELD MODE SHIELD ON OFF SHIELD SHIELD PROCESSING CENTER GROUP MON THU SUN FRI WEN SAT TIME SEG BB BB BB BH BACK GROUP CENTER ENTER TIMESET ROVE CANCEL E v gt SWING SPEED A MODE TIMER SHIELD CENTER CENTER TIMER SHIELD 45689 5023205090709 Fig 6 2 2 57 CONTROL DC Inverter Multi VRF Service Manual 1 ALL ON Start up all indoor units 2 ALL OFF Stop all indoor units La e EER _ EN Press this button during function setting to confirm the setting Press this button during function setting to cancel the For example press CANCEL button CANCEL when CENTER CONTROL has been set the state will go back t
161. ied in engineering drawings Method for calculation of added refrigerant volume based on liquid pipe Mass of refrigerant to be charged gt length of liquid pipe x refrigerant charge amount of every meter of liquid pipe Amount of refrigerant charge for every meter of liquid pipe kg m p22 2 019 05 015 9 12 7 9 52 6 35 Note a Standard pipe length is 15m If refrigerant piping L is shorter than or equal to 15m no additional refrigerant is needed If piping is longer than 15m based on liquid pipe more refrigerant shall be added The above table shows how much refrigerant shall be charged for every one additional meter of piping b Electronic balance shall be used for refrigerant charge c Thickness of pipe wall shall be 0 5 1 0mm and pressure bearing capability shall be 3 0MPa d The longer the piping the more refrigerating capacity and heating capacity shall be weakened INSTALLATION 120 YRF Service Manual 5 12 2 Steps of refrigerant charge are as follows a The connecting hose of refrigerant cylinder shall be connected to the connector of the pressure gauge The valve VH shall be opened to discharge air in the hose Then the high pressure end of the pressure gauge shall be connected to the refrigerant filling nozzle on the small valve of outdoor unit Pressure gauge connector valve Connector on gas side Connector on liquid side b Open pressure gauge valve VH then fill liquid state refrigera
162. ing DIP switch cut off the power supply of communication module The DIP switch for communication module 12 6 2 6 1 DIP switch 1 DIP2 setting Dial all the rods to ON means 0 as shown in Fig 6 2 6 2 Code list from 1 to Fig 6 2 6 2 DIP2 setting CONTROL 64 VRFService Manual 2 DIPI setting The 8 bit DIP switch in the communication module is for Modbus equipment address setting It is integrated by SA2 and SA3 on PCB but marked by DIP1 Dialing to ON means 0 and dialing to number end means 1 The address setting range is 1 64 communication module address Real image Fig 6 2 6 3 DIPI setting 1 Graphic example for setting of address 11 00000000 oo ce Code list Fig 6 2 6 4 Address 11 2 Graphic example for setting of address 43 Code list Fig 6 2 6 5 Address 43 6 2 6 2 Debugging After address setting of communication module check if the setting is correct through the region no on the centralized controller For example the address is set to 01 the centralized shall display region no 01 If the region 01 is not displayed it proves that the setting is incorrect You should reset the address no according to the Comnunciation Module Instruction and DIP table After normal communication between centralized controller and communication module an Installation Table shall be filled for check of information about each indoor unt If the qu
163. ing the spring into copper pipe or sheathing onto the copper pipe 96 35mm 22 2mm c Machining with hand operated pipe bender Use the pipe bender of suitable dimension 96 35 922 2 d Machining with electric pipe bender hydraulic Suitable for mass machining of fine and coarse fitting pipes 96 35mm 969 9mm Advantage X Decrease the weld joint thus reduce the possibility of leakage and oxidization For example It can decrease the weld by 8 spots Please act now to improve the quality X No joint is required which will save the material costs Reduced waste of fitting pipe materials X Reduced resistance in the fitting pipe The bending radius higher than the pipe joint Cautions X During bending there shall be no wrinkling or deformation on the inner side of the copper pipe X Spring pipe bend X The bender inserted into the copper pipe must be cleaned X Do not bend over 90 Otherwise wrinkling may be formed on the inner side of copper pipe and in the future the copper pipe will be broken from this position INSTALLATION 108 Tae rente VRFService Manual Steel pipe ry made Jacketed bender Inner side wrinkled and deformed __ Bent with fissure ___ mE er x occurring on this side X Section fy P f The copper pipe might be i deformed even if it is not bent 7 Ms Correct section S FF B
164. interfaces of the power supply module n aE 3L E CNI H 5 CN4 CNS CN3 CN2 Fig 5 5 2 Interfaces of the Display Board Fig 5 5 3 Interfaces of the Power Supply Module Board 49 CONTROL Service Manual Service Manual E a Interface of the Power Supply The interface of the power supply module board is for the connection board of the external power cord the terminal AC N for the neutral line the terminal AC L for the live line and the middle terminal keeps open The interface CN4 of the power supply module board which is for the power supply of the display board 15 connected with the interface of the display board through the two core wire provided by Gree b Communication Interface The interfaces CN2 CN3 CN4 and CNS of the display board are for communication and CN2 namely COMA 1 for the communication o the duct type unit 2 pin CN5 CN3 namely COMI COM2 CONG respectively are for the communication of the multi VRF system 3 pin 5 5 1 3 Preparation and Connection of the Communication Line a The communication line between the centralized controller and the unit should be prepared by the user according to the actual project b Preparation and connection of the communication line for the multi VRF system One three core communication line is needed to connect one set of multi system to one interface COMI 2 or COM3 of the smart zone contro
165. ion Section area of lead wire is only applicable for 15 m distance If above increase the section area to avoid overload of current which would cause burnout of lead wire The outdoor fan of this unit is without static pressure If static pressure is required please specially notice it on purchase order Running condition of cooling outdoor temperature 5 C 48 C Running condition of heating outdoor temperature 20 C 27C 15 PRODUCT DC Inverter Multi Service Manual 5 PIPING DIAGRAM 5 1 Piping diagram of GMV Pdm224W NaB M GM V Pdm280W NaB M O ba bd SEY PRODUCT 16 Ld DC Inverter Multi 5 2 Piping diagram of GMV Pdm335W NaB M GM V Pdm400W NaB M GM V Pdm450W NaB M Inverter compressor INV Standard compressor STD1 STD2 High pressure switch for INV High pressure switch for STD1 STD2 Check valve for INV KAA RK Major Function According to the actual need the inverter compressor can adjust its revolution among 30rps 90rps When the inverter compressor fails to meet the needs of the system the fixed frequency compressor will start together When the discharge pressure of the inverter compressor exceeds the upper limit of the high pressure switch a feedback signal will be sent out to stop the unit immediately so as to protect the compressor When the discharge pressure of the fixed frequency compressor exceeds the upper limit of the high pressure switch
166. ion of gas pipe The oil trap shall be fabricated into two U type elbows or one return type elbow The height shall be 3 5 times the piping diameter See below for details on installation and fabrication of oil trap a The oil trap may be fabricated into U type or return type b If outdoor unit 1 below indoor unit it is not needed to install oil trap on the vertical pipe of gas piping c If the outdoor unit 15 below the indoor unit it is not needed to install oil trap at the highest or lowest position If the outdoor unit is above the indoor unit oil trap and stop elbow must be installed at the lowest and highest position of the vertical pipe See the schematics below d See the schematics below Lquid pipe Stop elbow Gas pipe gt 7 unit 1 unit 2 unit 3 6m NES a Oil trap 6m Outdoor unit 6m Outdoor unit lower than indoor unit INSTALLATION 102 DC Inverter Multi VRFService Manual Outdoor Stop elbow unit Gas pipe Oil trap L quid pipe 6m B PO Oil trap G unit 1 unit 2 unit 3 Outdoor unit higher than indoor unit e Fabrication dimension of oil trap is as shown below 103 INSTALLATION VRF Service Manual 1 Service Manual 5 INSTALLATION OF REFRIGERANT PIPING 5 1 Flow Chart of Installation Installation of indoor unit Fabrication according to piping design di
167. ipe connection 15 completed On one hand check if the drainage 15 smooth on another hand check the piping system for any leakage 6 2 10 Steel sheath shall be provided to the pipe crossing the wall or slab The pipe joint shall not be positioned within the sheath The steel sheath shall be flush with the wall surface or slab base but 20mm higher than the slab base The sheath shall not affect the pipe gradient The clearance between pipe and sheath shall be blocked by using flexible inflammable materials The sheath shall not be used as the supporting point of the pipe 6 2 11 The joint of thermal insulation materials must be adhered by using special glue and then wrapped with plastic tape having a width not less than 5 to avoid condensing 6 2 12 Ensure a gradient over 1 when connecting the drainage pipe to the indoor unit imum __ Farm I _ 1000 1500 eq Gradient over 1 100 x 6 2 13 When connecting the drainage pipe to the indoor unit please fix with the included pipe clamp and do not use glue water thus to ensure easy repair 6 2 14 Installation requirements for auxiliary drainage pipe Pipe clamp Drainage PVC pipe Unit drainage pipe Drainage hose The auxiliary drainage pipe must be thermally insulated Thermal insulation of condensate pipe Pipe cover 123 INSTALLATION DC Inverter Multi Service Manual 6 2 15 The long drainage pipe may be fixe
168. ircumstance of semi anechoic chamber the value of noise could be a little higher in actual operation The data will change with the change of products Refer to those parameters listed on nameplate 8 The charge amount of refrigerant in the list is the datum when there 15 not drop height vertically between indoor unit and outdoor unit without consideration of connection pipe So calculate the additional charge amount according to actual condition during installation 5 Section area of lead wire is only applicable for 15 m distance If above increase the section area to avoid overload of current which would cause burnout of lead wire The outdoor fan of this unit is without static pressure If static pressure is required please specially notice it on purchase order Running condition of cooling outdoor temperature 5 C 48 C Running condition of heating outdoor temperature 20 27 9 PRODUCT Service Manual IBN Service Manual 8 Model Combined unit GMV Pdm900W2 NaB M GMV Pdm950W3 NaB M GMV Pdm1008W3 NaB M Capacity GMV Pdm280W NaB M GMV Pdm280W NaB M GMV Pdm450W NaB M GMV Pdm280W NaB M Model GMV Pdm280W NaB M GMV Pdm400W NaB M Lee GMV Pdm450W NaB M GM V Pdm450W NaB M Power Supply V Hz Ph 380 415V 50Hz 3Ph Circuit Circuitbreaker 40 40 32 32 40 32 32 40 bb ____ Power Lines Conne
169. isplayed Set SET blinks when the unit is on and commanded SET is displayed when the unit is on without command _ Oie O Swing running of indoor unit is displayed TIMER ON OFF is displayed when setting timer or inquiring timer state During timer inquiry integer of setting time of timer is displayed During timer setting integer of setting time of timer is displayed Set temp value is displayed when the unit is not during timer inquiry or setting Setting temp and timer time Under inquiry state No of online indoor units are displayed and No of selected indoor unit will blink Under single control state only No of selected indoor unit is displayed Under centralized state No of all online indoor units are displayed Centralized controller A Under inquiry state SHIELD will be displayed when selected indoor unit is shielded Shield B Under control state SHIELD will be displayed during setting or giving the shield order Region wired controller SHIELD will be displayed when selected units are shielded during long distance monitoring FORCE is displayed when indoor unit is forced to run is displayed when there is no malfunction Room temp value is displayed during no malfunction to selected indoor or outdoor unit Error code is displayed during malfunction to selected indoor or outdoor unit Melt is displayed during defrosting Region monitoring controller Lock A
170. it Communication inerface A B Communication inerface COM OUT3 Communication inerface Communication inerface Communication inerface Address code S2 Address code S2 Inverter drive plate inside the unit Communication N inerface A O I LO Communication between the outdoor and the indoor Communication inerface ommunication inerface Pinboard 1 LI Communication between 2 the outdoor a the indoor Pinboard 2 Indoor to indoor communiction 1 X ER D a pee of indoor unit 15 less than or equial to 16 2 Indoor to indoor communiction 2 2 pap S COP No nm Communicatin interface port of pinboards Qty of indoor unit is less than or equial to 16 To next modular e 5 When the qty of outdoor units is more than 2 and the the qty of indoor units 15 more than Nx16 sets X sets of the patch board shall be added for outdoor untis X total indoor units gty N 16 16 The qty if indoor units connected by each patch board shall be not more than 16 sets The corresponding interface port of patch board is CNI 7 3 4 3 Each module is equipped with one patch board to connect maximum 16 sets of indoor units The calculation of qty of patch boards Qty the total amo
171. ity control l 27 CONTROL DC Inverter Multi Service Manual 2 WIREDLESS REMOTE CONTROLLER This Service Manual contain two wiredless remote controller Y512 and YBIFA Y512 is applicable to Cassette Type and Duct type YBIFA m is applicable to Mounted Wall Type and Floor Ceiling Type 2 1 Wiredless Remote Controller Y512 Make sure that there is no obstruction between the remote control and the signal receptor The remote control signal can be received at the distance of up to about 10m Don t drop or throw the remote control Don t let any liquid flow into the remote control Don t put the remote control directly under the sunlight or any place where is very hot FAN button Press the button to change the speed of the fan according to the following order UTO FAN SPEED 4 ED call m AUTOFAN eff Ofte AUTO 6 aay Ja TEMP button Set temp increases 1 AIR by pressing and C d decreases 1 by pressing amp once SWING HUMID LIGHT SAVE Set temp 16 30 Set temp 16 30 Set temp 16 30 J Set temp 16 30 ON OFF button Press the button to turn on the unit Press the button once again to turn off the unit and cancal the timer MODE button Press the button to change the mode according to the
172. ity of other works It 1s best that all operators shall have one pipe cutter and at least one pipe cutter of big dimension shall be provided on site A CAUTION To prevent the invasion of water or waste avoid placing the copper pipe directly on ground Chamfer Burrs may occur on the cutting face of copper pipe and must be removed Meanwhile purge the foreign articles out of the pipe and refinish the pipe end e Use scraper or other tools to remove the burrs on inner side To prevent copper scraps from falling into the pipe please keep the pipe end downward during operation e If the pipe end 15 obviously deformed please cut and throw it off and then refinish the pipe end e Eliminate the copper scraps thoroughly and use cotton yarn to wipe the pipe clean X The flared joint must be kept smooth X When removing the burrs with scraper do not remove too much especially for the fitting pipe of small diameter otherwise the contact surface of the flared joint will be reduced Do not cause any scores and avoid cracking after the flared joint is formed X Adverse impact if the burrs are removed too much with scraper 107 INSTALLATION VRE Service Manual Service Manual F The contact face becomes small P i zen gt sia Flared nut 5 5 5 Pipe bending Work Methods a Bend by hand Suitable to fine copper pipe 96 35mm 12 7mm b Machining with spring pipe bender Bend by insert
173. ive Current Protection heck if the resistance between U V W is equal and if the ground is shortcut YES Replace the motor Replace the fan motor drive board It is finished 185 MAINTENANCE VRE Service Manual Service Manual 9 Solution to the Communication Error of the Fan Motor Drive Board Communication Error between the Fan Drive Board and Main Control Board Check if the power cords of NO the fan motor drive board and the main control board are connected properly Check if both the main contro board and the fan motor drive board are powered on YES NO onnect the communication line properly and see if the error is eliminated Check the communication line between the fan motor drive board and the main control board is connected properly eplace the main control boarc NO and see if the error is eliminated Replace the fan motor drive board and see if the error is eliminated It is finished 10 Solution to the Fan Motor Overheating Protection Fan Motor Overheating Protection protective resistance of the fan motor YES is 0 or if the grounding of the fan motor is shortcut Replace the motor NO Replace the fan motor drive board It is finished lt MAINTENANCE 186 VRFService Manual 2
174. l blink and display Within 5 CLOCK buttonCLOCKseconds the value can be adjusted by pressing or button if continuouslypress this button for 2 seconds above in every 0 5 seconds the value on ten place of Minute will be increased 1 During blinking repress the Clock button signal will be constantly displayed and it denotes the setting succeeded After powered on 12 00 is defaulted to display and signal will be displayed If there is signal be displayed that denotes the current time value is Clock value otherwise is Timer value LIGHT Press this button at unit On or Off status Light On and Light Off can be set up LIGHT buttonLIGHTAfter powered on Light On is defaulted Notice This is a general use remote controller it could be used for the air conditioners with multifunction For some function which the model dosen t have if press thecorresponding button on the remote controller that the unit will keep the original running status BLOW Press this button can turn on or turn offthe drying In Cool and Dehumidifying mode this button BLOW will be concealed atthis time the Blow function is turned off After powered on Blow OFF is defaulted When operating the ON OFF button orswitching mode to Cool or Dehumidifyingmode the Blow function will keep the originalstatus If unit 15 turned off Blow OFF onlycan be set up and send the signal In Auto Fan as well as Heat mode Blow functioncan not be set up and there is
175. l 6 Mount front panel 1 Loosen wire fixer under the right electric box and the fixing screw of electric box 2 Remove the right electric box 3 Disassemble gas liquid separator 4 Remove gas liquid separator 5 Mount a new gas liquid separator MAINTENANCE 212 Loosen wire fixer Solder the spots
176. lamp ON Check if the phase sequence protector of the units is blight Adjust the phase sequence of the three phase power of main wiring board Check if 220V transformer of the mainboard is output NO c Check the connection onnect with primary coil and then check if the 12V 5V transformers are output NO Nu Replace the transformer MAINTENANCE 180 E Ni ie Service Manual 2 8 The AC contactor does not pull in The AC contactor of compressor does not pull in NO Check corresponding content according to the indicating error code on hand controller If the units in normal start up state no trouble display YES Check if the contactor coil is YES supplied with power Replace AC contactor NO Check if the mainboard corresponding compressor relay is output YES Br Check the circuit Replace mainboard 181 MAINTENANCE VRF Service Manual m Service Manual 2 9 Typical troubleshooting E5 for DC frequency conversion drive board When the error E5 arises please firstly check the LED status of the main control board drive board of the fan motor and also drive board of the compressor after that confirm what the error is through the error list finally check out and eliminate the error 1 Solution to the Communication Error between the Co
177. lation Procedure of System for its connection method 71 CONTROL DC Inverter Multi Service Manual 6 4 3 Instruction to Installation Procedure of System Step 1 Integral Design of the Whole System In consideration of features of building and installation of the unit the building is divided into a lot of monitoring regions and then confirm required systems their quantity and installation locations As for this example A Division of monitoring regions According to needs of the users the whole floor is divided into 3 monitoring regions south area office 1 6 north area assembly 1 2 and office 7 8 and monitor room B Confirmation of quantity of systems The quantity required for the pinboards 15 the same as Communication modules Centralized control cabinet communication modules If no pinboard only one module is needed So there should be 3 modules in total Centralized control cabinet Installed indoors according to user s conditions Centralized controller Installed indoors Step 2 Wiring and Installation A Centralized controller as extension function of GMV unit can be installed and debugged after communication connection between outdoor unit and indoor unit and normal operation of the unit B Make of centralized control cabinet If a lot of communication modules are used centralized control cabinet is recommended Heavy current wires and communication lines should be wired separately Th
178. lfunction the protocol is not identified Running LED green This LED 1 light when receiving communication data M ME e It is available in indoor unit state page IDU STATE only available in indoor unit of GMV multi series T ono press it two seconds to enter centralized control page quick press it to select online indoor unit Men Press this button on main page to enter Menu page Press this button in parameter page and move the cursor During selection press this button to switch upward leftward during modifying data press this button to increase numerical value This button supports increment function Y During selection press this button to switch downward or rightward during modifying data press this button to decrease numerical value This button supports decrement function Press this button to exit from this option arr com During selection press this button to confirm the selected option During modifying data press this button to confirm parameter value and move cursor Status bar It simply indicates the function of the current button ENGINEERING 464 DEBUGGING DC Inverter Multi VRFService Manual 6 3 Debugger Connection 6 3 Power Supply and Communication Interface 4 core port includes power supply and communication There are two connecting methods 1 Wiring method 1 of portable debugger Step 1 Remove the dis
179. ller 2 One end of the communication line is connected with the smart zone controller and the other is connected with the three pin socket of the indoor unit c Preparation and connection of the communication line for the duct type unit The communication line for the duct type unit is the two core line provided by Gree one end 15 the two core head and the other end 15 the crystal head code 40113325 2 Where there are sets of duct type units then N 1 communication lines are needed 8 Connect the two core head of one communication line to the port of the smart zone controller and connect the two core heads of N communication lines to the two pin socket of the wired controller of the duct type unit The user can prepare the extension line and connect the wires inside the crystal head according to the actual need Note one set of Multi VRF system consists of one multi VRF outdoor unit and one or more than one multi VRF indoor units And one set of duct type unit consists of one duct type outdoor unit and one duct type indoor unit 5 5 1 4 Installation The installation can proceed on when the installation location is selected and the installation steps are as follows a Firstly make sure where to install the smart zone controller b Embed the power supply box 2 as Fig 5 5 6 for the installation of the bottom case 3 c Connect the power cord and the communication line of the display board and then le
180. m280W NaB M GMV Pdm280W NaB M GMV Pdm280W NaB M GMV Pdm280W NaB M GMV Pdm335W NaB M GMV Pdm400W NaB M ooling 191 072 209 838 232 016 pwp eatin E 214 956 235 428 261 018 Power Supply V Hz Ph 380 415V 50Hz 3Ph mE 7 52 7 52 7 5249 23 7 52412 45 ower input p Heating kW 7 04 10 7 70 9 38 7 70411 2 c Cooling A 13 44 13 44 13 44 16 50 13 44 22 25 urrent an 13 76 13 76 13 76416 77 13 76 20 02 Circuit Circuitbreaker 324 32 32 40 32440 Power Lines Connecting pipe Dimensions of Unit Dimensions of Package mm 28 6 28 6 28 6 Gas Pipe prm Height 18504 1850 18504 1850 1850 1850 Net Weight 2554255 2554350 2554350 Gross Weight 2754275 2754380 2754380 Loading Quantity 20 Container wl Loading Quantity 40 Container Loading Quantity 40 um High Cube Container Notes D The sound level is tested under circumstance of semi anechoic chamber the value of noise could be a little higher in actual operation The data will change with the change of products Refer to those parameters listed on nameplate 89 The charge amount of refrigerant in the list is the datum when there 15 not drop height vertically between indoor unit and outdoor unit without consideration of connection pipe So calculate the additional charge amount according to actual condition during installation 0 Section area o
181. m450W NaB M
182. mal insulation on all pipe joints 6 4 Requirements of Heat preservation Heat Insulation Materials The thermal insulation material of obturator foam shall be used Fireproof level Bl The thermal conductivity shall not be higher than 0 035w m k when the average temperature is 0 C 125 INSTALLATION VRF Service Manual m Service Manual m Thickness of thermal insulation layer The thickness of thermal insulation layer on condensate pipe shall be over 10mm The joint of thermal insulation materials must be adhered by using special glue and then wrapped with plastic tape having a width not less than 5cm to avoid condensing Thermal insulation is not required for the outdoor section of condensate pipe 7 ELECTRICAL INSTALLATION 7 1 Precautions for Electrical Installation The wiring must be in accordance with the local rules Rated supply voltage and special circuit for air conditioner must be used Do not pull the power cord All the electric installations must be carried out by specialist technicians in accordance with the local laws rules and these instructions The diameter of flexible wire should be wide enough Replace the damaged power cord and connecting wire with special flexible wire The earthing shall be reliable and connected to the special earthing device on the construction The installation must be done by specialist technicians The leak protection switch and air s
183. mension Installation of connecting pipes Expel with nitrogen Welding Purge Airtight test Vacuuming and drying INSTALLATION 104 DC Inverter Multi VRFService Manual 5 2 Three Principles of Refrigerant Piping Installation Observe the three principles of refrigerant piping Key Factors Measures to Avoid Failure Invasion of outside water Fabrication of Vacuuming and Example Rainwater engineering water fitting pipe urge gt drying Invasion of indoor condensate Expel with nitrogen 0 05 0 3Mpa Formation of oxides inside the pipe during welding Invasion of dust and foreign articles from outside Fabrication of fitting pipe Use suitable materials copper tube soldering bar Incomplete welding Observe the basic welding procedures Airtight Leakage from flared port Leakage from edge Observe the basic operations for flaring of fitting pipe Observe the basic inerfacting procedures 5 3 Installation of Metal Embedded Pipe Work Order Metal Embedding Diagram Posting ai Installation of metal Embedded Parts Plot the line on ground if possible and use laser to project it onto the roof This 15 quick and correct Advance Installation of Metal Embedded Parts Please select according to local codes Subsequent Installation of Expansion Bolts In case that the met
184. mponents between module and module MLO1 Liquid pipe Sub assembly corresponding to ML01 A outdoor module MLO1 Air pipe 4 5 2 Selection of pipe diameter between module and module m M U gt E i gt 30mm Lala Pipe between outdoor unit and Liquid pipe connection sub assembly ne Gas pipe Liquid pipe Cana Liquid pipe pipe cg N Gas pipe 7 Pipe between outdoor unit and indoor unit 4 5 2 Pipe diameter between outdoor unit and connection component R410a refrigerant system Single module capacity code C Gas pipe mm inch Liquid pipe mm inch C 280 022 2 09 52 280 C x 45 28 6 12 7 4 5 2 2 Pipe diameter between connection component of module and connection component of module 4 5 2 3 Piping used for balancing lubricant The oil balance pipe is connected by using 12 7 copper pipe For three outdoor units arranged in parallel one 3 way joint having an inner diameter of 12 9 shall be used in the
185. mponents of remote monitoring system of FC30 23 A M MC200019 Standard Centrifugal units Include CD of monitoring software optoelectronic isolated converter etc 7 2 BMS System 7 2 1 General Description of BMS System The BMS system of Gree s central air conditioner adopts RS485 communication mode and provides the prevailing MODBUS protocol Via MODBUS standard protocol interface Gree s central air conditioner can be seamlessly interfaced to the building management system BMS This system 15 applicable to centralized monitoring and management of GMV multi VRF system water cooled screw chiller air cooled scroll chiller and centrifugal chiller It 15 a requisite system for managing the intelligent air conditioner system in modern buildings The BMS of GMV multi VRF system can provide BMS interface for Gree s multi VRF system Via this interface the user can execute centralized management and control of 4080 indoor units under 255 sets of GMV multi VRF systems It is a requisite system for management of the intelligent air conditioner system in modern buildings This system is applicable to the following models 1 16 GMV indoor unit R410A Heat Recovery Unit Non modular Inverter GMV Modular GMV 900 Digital GMV R22 Digital Heat Pump Water Heater and 1 32 Digital GMV 83 CONTROL Service Manna Service Manual 8 7 2 2 Function Instruction of BMS System Realize the perfect connection with other network b
186. mpressor Drive Board and the Main Control Board Communication error between the compressor drive board and the main control board Check if the power cords of the NO main control board and the compressor drive board are in good condition Check if the main control board and the compressor drive board are powered o YES Check if the ommunication line between the mai control board and the compressor drive board is connected well Make the connection of the NO communication line in good condition and see if the error is eliminated Replace the main control board and see if the error is eliminated Replace the compressor drive board and see if the error is eliminated It is finished MAINTENANCE 182 E VRFService Manual 2 Solution to the Compressor Drive Board and IPM Module Protection Error Compressor Drive Board and IPM Module Protection heck if the compressor runs or not before the IPM module comes into protection YES NO _ When the compressor comes Check if the connection of the into protection after running for a power cards of the main board period of time then check if the and the drive board is in good screws of the IPM module are condition tightened hc If the screws of the IPM module are
187. nal description of function dial up Dial up switch 1 S R Setting of memory mode including the standby mode and restoration mode The standby mode refers to that the previous parameters will be kept but the unit will not run automatically after the power supply 1s resumed This setting is factory defaulted dial up switch pulled to position For example if the parameters of an indoor unit set before power shutdown are High Fan and 24C the unit will be under standby state after the power supply is resumed and after the unit is manually started the parameters will remain as High Fan and 24 C The restoration mode refers to that not only the previous parameters will be kept but also that the unit can start automatically after the power supply is resumed But if the unit is under STOP state before power shutdown it will be also under STOP state after the power supply 15 resumed Dial up switch 2 L I Setting of control mode including wired control and remote control The wired control mode refers to that the indoor unit 15 controlled from wired controller hand controller This setting is factory defaulted dial up switch pulled to position When the setting is wired control mode the function dial up on 57 for setting of memory mode and setting of master slave indoor unit will be disabled These two settings can be done from the wired controller directly The remote control mode refers to that the indoor unit 1s
188. net Buckle Fig 6 2 4 6 5 Connect the electric box cover and lower cabinet with screws according to the following figure Screw hole J 12 6 2 4 7 6 Re assemble the upper cabinet and debugging can begin after this 6 1 4 Connection Between Controller and Unit Communication network The following 1 a brief sketch of communication net of multi variable units CONTROL 62 E Manual VRFService Manual 6 2 5 Connection between centralized controller and communication module Connection of them is shown in figure 6 2 5 1 Air conditioner Module 1 Power supply Communication wire Air conditioner Module 2 Power supply Communication wire Connect to next module es Air aa E conditioner Module 64 Multi VRF pa Centralized Controller SPP O GREEK MEI Communication ii wits OEE 2 88 88 88 88 AR A ix EB FR mas ms x 5 12 6 2 5 1 Skecth map of connection between centralized controller and communication module Communication module s address can be set from 1 to 64 In order to avoid communication malfunction addresses can not be the same 2 The communication wire of communication modules or centralized controller shall be equipped according to the distance in the project 8 Gree provides a piece of 2 core communication wire of 1m the
189. nt into the liquid pipe side until required amount 1s reached If refrigerant can not be charged in system unless the unit is turned on let the system run at full load cooling mode Open VH and discharge air in the hose The high pressure end of pressure gauge 15 connected to the refrigerant filling nozzle on the small valve of outdoor unit Open VL and charge gas state refrigerant into the gas pipe until required charging amount is reached c Observe electronic balance or spring balance When required amount 15 reached the valve shall be closed very quickly and then source valve on the refrigerant valve shall be shut off d The amount of charging refrigerant shall be recorded Refrigerant charge shall be recorded as per the following table Unit Mark Amount of charging refrigerant kg 121 INSTALLATION VRF Service Manual Service Manual F 6 INSTALLATION OF CONDENSATE PIPE 6 1Material Quality Requirements for Condensate Pipe Generally the condensate pipe shall be water supply U PVC pipe adhered by using special glue The other materials available include PP R pipe PP C pipe and hot dipped galvanized steel pipe It is not allowed to use aluminum plastic composite pipe 6 2 Key Points for Condensate Pipe Installation 6 2 1 Work Order Installation Sheathing of thermal Connection of Thermal insulation gt insulation pipe on 2 drainage pipe gt Water test of drainage pipe condensate pipe 6 2 2
190. nversion compressor is wrong Refer to the error code of outdoor nixie tube for specific error information There 1s communication error between the mainboard of indoor unit or wired controller and the outdoor unit The wrong indoor unit will stop and display error code The running modes of the unit running first and that of later are variant There is mode conflict among cooling defrosting and heating mode There is no mode conflict among fan cooling defrosting and heating mode When mode conflict occurs the indoor unit will display E7 and stop When the water is full for successive 8s the water full protection will occur The wired controller will display E9 and alarm will occur In that case the water pump will work while the other load of indoor unit will stop The outdoor unit needs to adjust capacity output The indoor unit of temperature sensor error displays the error code and stop The indoor unit of temperature sensor error displays the error code and stop The indoor unit of temperature sensor error displays the error code and stop The indoor unit of temperature sensor error displays the error code and stop If short circuit occurs to the temperature sensor there will be alarm The error information will be transmitted to each indoor unit The error LED or wired controller will display the error code When outdoor ambient temperature is lower than 5 the break circuit of outdoor temperature sensor will be shielded
191. nverter drive plate inside Communication Pinboard 1 inerface Communication between the indoor and the outdoor 2 Indoor to indoor communiction 1 2 No n 16max gt A INSTALLATION 130 DC Inverter Multi VRFService Manual 2 When there is only one outdoor module and also the qty of indoor units is more than 16 but less than 32 one patch board shall be added to outdoor unit which can connect up to 16 sets of indoor units The corresponding port of patch board is CNI SINGLE MODULAR Communication interface port CNI of pinboards Capacity code SW1 Qty code Address SW2 code SW3 Communication CN3 A inerface Communication ch2 B inerface i CN16 Cqmmunication pan CN12 CNI7 A inerface of out unit B Address code S2 m Communication between 2 ND B the indoor and the outdoor LN TS A Communication cnt or B Pinboard 2 i 2 Indoor to indoor communiction 2 COM OUT3 pm mmm Communication NT e inerface a No n 16max Address code 52 CND A Inverter drive B plate inside the unit Communication Pinboard 1 inerface Communication between Qty of indoor unit is less than or
192. o d ITE Communication between Qty of indoor unit 15 less than or equial to 16 the indoor and the outdoor 2 Indoor to indoor communiction 2 Qe mmm n No2 2 No n 16max A SS Qty of indoor unit is less than or equial to 16 Communication among different pinboard is prohibited 135 INSTALLATION VRE Service Maul NPPPIZIZZONN Service Manual 7 4 Dial up of Unit The DC inverter GMV unit of Gree 15 provided with three dial ups 1 e address dial up capacity dial up and function dial up Adjust the function dial up to set control mode and function Adjust the address dial up to set the corresponding relationship of indoor unit and wired controller Adjust the capacity dial up to set capacity demand of indoor unit 7 4 Function Dial up Functional dial switch 57 1 located on the mainboard of the indoor unit It is operated when the user need to change the default setting Functional dial switch S7 Dial up Setting Dial up Switch Functional Description 0 ON Position i 1 S R Setting of memory mode Standby S Restore R 2 L 1 Setting of control mode Wired control L Remote control I 3 M S Setting of master slave indoor unit Master indoor unit M Slave indoor unit S A I 0 Air inlet T Receiver O acquisition point S L H Setting of high low static pressure fan Low static pressure L High static H Functio
193. o slection of control method UP DOWN For direction indication For example press these buttons in query state to LEFT RIGHT select the indoor unit or communication modules to be queried SHIELD Shield functions of a single or a group of indoor unit s 1 3 5 7 8 9 CONTROL 58 VRFService Manual 6 2 3 Display View D 12 1 dd 05 E COOL DRY FAN HEAT pers SWING rn nr 6 lt 3 En 35 Si ROOM WALL SHIELD lt a m gt SHIELD HH C PROCESSING LL 1 ON OFF SHIELD INDooR 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 THU CENTER BS Q GROUP LU WEN SAT Doo Fig 6 2 3 e ERN OTT NN c L3 TO a ema 59 CONTROL DC Inverter Multi Service Manual 6 2 4 Installation After selection of installation location perform the installation as follow 1 Confirm installation hole site To be installed in the wall 1 a hole of of 180mmx106mmX 72mm LxWxD GG RIDDD UME 180 Wall Fig 6 2 4 1 2 Make 4 pieces of wooden or plastic chucks Wooden chucks or plastic chucks jf Wall Us
194. od 0 SJUBIOSLIJOI ulese our odid pue ooe dosq sapa edid oq NI urege oui odid pue sovidoy urege oui odid p 9 pue urege oui odid pue UOrnjeuljuo Jo POPON gurjoouso qnoa DC Inverter Multi VRF Service Manual eur edid oy oprsur senunduirr 00 IIAL C tr p y90 q sosneo oup osneg Jo 10594 9 ods uo duis JUOIQUIE 399 09 SJUBIOSIIJOI JO 10 2 NEO edid pened uo 504 SI 9194 10 18918 SI soJnje1oduiro edo jo 991 SJUBIOSLIZOI Jo SUOTY edid penred uo 504 SI 9194 10 18918 SI edo jo oui SJUBIOSLIZOI Jo SUOTY Jo UOSEAI GA9 puooog O Sp SI duro juoeiqury eurouqe SI 1 O Ue SI duro duro y pue duro uoneinyes SUIPUOdSdIIOD 0 ognssoud Josue UJ 07 Joye sounssoud pue YSIY jo dinssoid Surzi enbo oy oou pue yun ojo duroo 4016 SJUBIOSLIJOI ou Jo KOUSIOUFNSUI SOSNEI ourjodid T S prepuejs DOUdIOFOI Surp1oooe 00 SI 1 5 1 p
195. oil balance pipe INSTALLATION 100 3 YRF Service Manual 4 6 Outdoor unit piping sequence diagram A GMV Pdm224W NaB M GMV Pdm280W NaB M XM o I I fs Liquid Gas pipe Oil balance pipe Servicing valve Suction side B GMV Pdm335W NaB M GM V Pdm400W NaB M GM V Pdm450W NaB M THAT iii Mi J LL LL
196. oll calling of construction personnel and confirmation on their health status b Acknowledgement on work suits helmets clothes safety bags and safety shoes c Description of work location and environment d Job division shall be made Job content method and order shall be indicated Risk prediction activities shall be performed e Construction Schedule shall be worked out f Head of each group shall be assigned g Risks of occurrence of an accident such as electric shock or fire shall be indicated h Instructions on how to use electric machinery properly shall be available i Locations marked with Staff Only shall be indicated j An application is necessary for use of open flame and shall be reviewed by on site safety officer for approval k Instructions given by fire authorities shall be accepted in accordance with local laws and regulations Tools shall be sorted and counted Upon knocking off for the day tools shall be sorted and counted If necessary the piping system shall be charged with coolant to avoid exhaustion 6 7 3 Attention a Construction personnel must have relevant operation qualification Flame operation must be undertaken by qualified persons in accordance with local laws and regulations b Wear coveralls cotton for the best safety shoes safety helmet leather gloves protective goggles and anti dust mask Welding torch with back fire arrestor shall be used to ensure safety c Take care not
197. ommunicatio wire To 2 indoor unit of group 1 C To n indoor unit of group 1 The part with dotted line is for the on site wiring of the customer The power wire diameter and the other specific parameter please see the installation manual The mainboard of outdoor units include the module address and transfer address need to confirm at the work site and dial up Each outdoor unit module can connect maximum 16 indoor units yet need to confirm on the work site Each outdoor unit module can connect maximum 16 indoor units as one communication unit 127 INSTALLATION DC Inverter Multi VRF Service Manual 7 3 2Wiring Sketch Map between Indoor Unit Outdoor unit Indoor unit A Indoor unit B Indoor unit N a eem 2 core Wiring communicatio resistor matching line Terminal board 5 4 Power supply Power supply Power supply Power supply 3N 380V 3N 380V 3N 380V 3N 380V 50Hz 50Hz 50Hz 50Hz Note the diagram is our single phase indoor unit the power supply wiring is subject to the actual condition if there is 3 phase indoor unit Notes a The last indoor unit requires to install another communication line as wiring resistor matching b Both the communication lines of outdoor units and indoor units are cascade connection c Connect the communication lines of indoor units and out units according to the above diagram 7 3 3 Connection of communi
198. oor unit controlled by the region controller can be connected If the region controller 15 used as a region wired controller wired controller with the indoor unit must be removed Region Controller 4 core twisted pair line Main board of Indoor unit 4 core communication line terminal 4 core twisted pair line Wired controller or region controller 4 core communication line terminal Optional connection 12 5 4 Power cords and communication lines for region controller Before installation and connection make sure the power supply is off After installation and connection check the connection result again to prevent loose or short There are 4 connection lines included in the 4 core twisted pair line to the controller from CNI or the upper and right CN2 to the upper they respectively are Ground line GND communication line A A communication line B B and power cord 12 v N Note During following connection of wirings pay special attention to them to avoid malfunction to units for electromagnetic interference 4 Keep the signal lines or wirings communication of region controller or wired controller at least 20 cm from the power cords or connecting lines between indoors and outdoors to prevent abnormal communication Shielding twisted pair line must be adopted as signal line or wiring communication once the unit is installed in the place where there 15 serious electromagnetic interference 45
199. or refrigerant piping that would be divided into multiple check portions for locating leak source in a certain section 117 INSTALLATION VRF Service Manus i Service Manual E 5 9 2 Pressure maintaining and leak hunting of the system with refrigerant piping in connection with indoor unit and outdoor unit When refrigerant piping 15 to be installed pressure maintaining and leak hunting is required for the piping After refrigerant piping is in connection with indoor unit and outdoor unit pressure maintaining and leak hunting 15 also required The purpose of the test 15 to check whether any leak 15 existent at threaded connection of indoor unit and outdoor unit and at new welded points Steps Nitrogen is charged to reach 2 5MPa and remains at the pressure for 24h nitrogen shall be filled from refrigerant filling nozzles at the big valve as well as the small valve using a pressure gauge during pressure maintaining after nitrogen is charged the pressure gauge shall not be dismantled Observe whether pressure changes in 24 hours for eligibility criteria see pressure maintaining and leak hunting of refrigerant piping in 5 5 2 If any leakage please check threaded connections and new welded spots of indoor unit and outdoor unit Repair welding shall be performed immediately Afterwards pressure maintaining 15 repeated until eligibility 15 reached 5 9 3 Cautions a The pressure meter range of R410A system shoul
200. or unit PCB E6 Communication cable Address code of that indoor unit 1s not the same with that of wired controller connected Outdoor unit Indoor unit Address PCB Communication cable There are repeated codes among main boards of indoor units or wired controllers Communication wire between that indoor unit and the wired controller is short circuit There is repeated address code of patch board The communication wire of the module of that patch board is not correctly connected with other modules Check if the communcaiton wires of different patch boards are wrongly connected Check 1f address code of that indoor unit 1s the same with that of wired controller connected Check if there are repeated codes among indoor units or wired controllers Check it with universal meter and if it 1 short circuit replace the communication wire Separately measure the two polarities of communication wire and check if it is shorted to earth And if it 1s replace the communication wire Check the code again Check communication wires among modules and the code again VRFService Manual Communication among outdoor modules 15 abnormal E6 error code will be displayed on outdoor module as well as the indoor units which are connected by this pat
201. osoq UOSBAI 9 pouonuoui UOSBAI JON BULIOU SI 49891 ST JI 910A FULIBOY pue 19891 SI uorsuedxo 9117999 JI yoyo Iooput 272183909 uoy pue 22181909 0 1 JO POPPIN SI uorsuedxo ET euuouqe SI uorsuedxo ornoo dc c osne Jo uonduoso q PA9 PUOIIS asned o qissoq 9 01 1940 duro JUOIQUIE uey SI UN JOOpUI JO edid duro yo UI STd08t 01 SI onoo o USYM Sureoq O ST 1940 10 o ur ULY SI JO edid Jo duro Jopno STd08t 01 SI onoo o usq opoui 8 UT uoneurmuo JO POPPIN AT 991109 uorsuedxo 212219 osneg Jo uonduoso q UOSBAL 9 4514 ySigIodns SI 281292811 9101 jewouqe st 28120251 N S e DEBUGGING cs DE Lal Lal lt Lal LO pieoqureur JO 105095 duro SJUBIOSLIJOI 199102 OY 28100221 pue urojs s opisur SJUBIOSIIJOI ISLAMIA SJUBIOSLIJOI ou pue edid oq ozrumnoeA pue oq o pueH sjuouromb
202. perature should be among 15 C 12 C with the max temperature 15 C lower than the indoor ambient temperature and min temperature close to the outdoor ambient temperature eUnder the system low pressure of the heating mode the temperature should be 25 C 10 C which is about 9 C lower than outdoor ambient temperature 153 NGINEERING DEBUGGING DC Inverter Multi Service Manual 154 Reference Value of the Debugging Parameters for the Pdm NaB Series Modular DC Inverter VRF System Debugging Items Ambient temperature of the indoor unit Inlet pipe temperature of the heat exchanger of the indoor unit Outlet pipe temperature of the Indoor heat exchanger of the indoor unit Unit Midway pipe temperature of the heat exchanger of the indoor unit Opening angle of the electronic expansion valve of the indoor unit Communication Data Communication Parameters Drainage System Others Opening level of the electronic expansion valve of the outdoor unit Running frequency of the inverter compressor Inverter compressor current IPM module fin temperature Driving bus voltage System Parameters Parameter Description Unit Reference Value Remarks e480PLSU Under the cooling mode the opening level of the electronic expansion valve should keep at 480PLSU consistently eUnder the heating mode the opening level of the electronic expansion valve should be among 100 480PLS According
203. play panel and insert its 4 core port into pinboard COMI Step 2 Connect pinboard COMI to the display panel with the 4 core wiring Step 3 Connect pinboard COMA to debugger COMI with the 4 core wiring IWNOO COMI JE COM3 COM2 2 Wiring method 2 of portable debugger Step 1 Remove the display panel and insert its 4 core port into debugger COMI Step 2 Connect debugger 2 to the display panel with the 4 core wiring ENGINEERING DEBUGGING Service Manual F MAINTENANCE MAINTENANCE 166 DC Inverter Multi e ae ww MAINTENANCE 1 TROUBLE SHOOTING 1 1 Trouble Display of Indoor Unit Error Error Code Compressor high pressure protection Indoor antifreezing protection Compressor low pressure protection trj Compressor discharge temperature protection trj Conversion overcurrent protection Communication Error oN A gt tri N Mode conflict Water full protection Ambient temperature sensor error of indoor unit Indoor coil pipe inlet temperature sensor error Ti Indoor coil pipe middle temperature sensor error Ti N Indoor coil pipe outlet temperature sensor error Ti Outdoor ambient temperature Sensor error Outdoor defrosting temperature sensor error Ti N Discharge temperature sensor error Ti Source of error signal
204. quency 1 led4 blink led3 blink led2 dark led1 bright fixed frequency2 6 Variable frequency exhaust temperature sensor error Error display on hand controller F9 Outdoor units mainboard indicator led4 blink led3 blink led2 dark led1 blink air out sensor led4 bright led3 dark led2 dark led1 blink sensor of housing head cover MAINTENANCE 178 YRF Service Manual 7 Indoor units mainboard indicators Patio indoor units red led blink red led blink green led dark yellow led dark FY wall mounting motor red led blink yellow led dark New FY wall mounting motor red led blink green led dark yellow led dark Hanging indoor units red led blink green led dark yellow led dark Temperature sensor error If the plug on temperature sensor is correctly connected to the socket on mainboard Check the orientation of plug and socket Remove the temperature and measure if its resistance is within normal range Yes Replace the temperature sensor Replace the mainboard of indoor unit 2 6 Sensor Trouble 1 High voltage sensor error Error display on hand controller Fc Outdoor units mainboard indicator led4 bright led3 blink led2 blink led1 blink Indoor units mainboard indicators Patio indoor units red led blink red led blink green led dark yellow led dark FY wall mounting motor red led blink yellow led dark New FY w
205. r Lines Moisture protection pipe o _ I I m m 8 8 _ ENT NINE RE E Loading Quantity 40 Container Loading Quantity 40 High Cube Container Notes The sound level is tested under circumstance of semi anechoic chamber the value of noise could be a little higher in actual operation Dimensions of Unit 2 The data will change with the change of products Refer to those parameters listed on nameplate 89 The charge amount of refrigerant in the list is the datum when there 15 not drop height vertically between indoor unit and outdoor unit without consideration of connection pipe So calculate the additional charge amount according to actual condition during installation Section area of lead wire is only applicable for 15 m distance If above increase the section area to avoid overload of current which would cause burnout of lead wire The outdoor fan of this unit is without static pressure If static pressure is required please specially notice it on purchase order Running condition of cooling outdoor temperature 5 C 48 C Running condition of heating outdoor temperature 20 C 27 C 7 PRODUCT Service Manus Service Manual 8 Model Combined unit GMV Pdm560W2 NaB M GMV Pdm615W2 NaB M GMV Pdm670W2 NaB M uode GMV Pd
206. r and discharge temperature sensor 9 Mount the front panel Mark the power cable color and corresponding terminal
207. rature is approached then copper pipe is heated circularly to reach braze welding temperature copper pipe becomes light red and at the same time brazing filler metal 15 added circularly to fill in the clearance around the connector uniformly and afterwards the welding torch is slowly moved away from the pipe and a small amount of brazing filler metal continues to be filled in until smooth fillet is formed e During heating welding rod shall not be burned directly by flame Heating time shall not be very long e During welding flame shall be controlled well on its direction and kept away from rubber casing sponge and cables e Post welding treatment cooling After welding in the condition of nitrogen protection available the connector shall be heated until the copper pipe changes color 200 300 C i e annealing treatment Before welding seam becomes completely solidified welded pieces shall not be moved or shocked For welded piece cooled by water take care not to let water enter into copper pipe and try to prevent residue water INSTALLATION 114 YRF Service Manual flowing into the pipe when welded piece is laid aside f Quality and inspection of braze welding Welding seam should have smooth surface Fillet should be even and full with natural arc transition Braze welding connector should be free from defects such as over burning welding blockage crack rough surface of welding seam and burning through Weldin
208. re Restart the unit Is there overcurrent Replace compressor protection Replace the damaged module Note DC inverter unit can not be tested by disconnecting the compressor wire 2 The LCD will display current protection after it runs for a while Inspect match of indoor unit Adjust the indoor unit to suitable capacity Inspect charging volume Adjust it to be within the permitted range Voltage of DC monitoring module P N Voltage 15 kept within 252 330V without or more variation Replace the damaged DC capacitor Compressor and module are damaged MAINTENANCE 188 o oa ana VRFService Manual 2 11 PFC Protection ES is displayed on the wired controller Monitoring Nixie tube of display Y mainboard PFC abnomnal Hc is displayed Inspect the mainboard 1 min after power off or the buss voltage 1s below 36V Is it wet dirty or short circuit Dry and clean it or remove short circuit Is 15V of mainboard stable Restart the unit circuit work work 15V A pin 1 2 1 If itis affected by damp find out the reason and take some precautionary Is IPM module of mainboard damaged
209. re available Debugging 01 Function mode 2 The wired controller buttons of 16 indoor units in a region can Region Setting Region monitoring 4 shielded or locked Controller controller 3 It can time 16 indoor units in a region 4 It has the function of power off memory NOTE Wired controller must be reserved with which indoor unit has matched Features 1 It can replace wired controller to control selected indoor units 02 Function mode in a region Region wired 2 It can uniformly time the selected indoor units controller 3 It has the function of power off memory NOTE Wired controller matched with indoor unit must be removed and indoor unit must be reenergized after debugging Fig 4 1 2 Sketch map to the relation among the region controller region monitoring controller and region wired controller CONTROL 42 4 2 Operation View SINGLE A N i 1 2 3 4 5 6 7 8 INQUIRY FUNC CENTER 9 10 11 12 13 14 15 16 A MODE A ROOM TEMP SHEILD ILI N OQ LL MELT I Ca SWING NN lt C 2 2 2 03 9 2 TIMER WY GREE Function FUNC A Switch the control mode of inquiry single central control FUNCTION B In central control status give the central order by successively pressing FUNC button MODE Set cooling heating fan dry mode for indoor unit A Inquir
210. rease the section area to avoid overload of current which would cause burnout of lead wire The outdoor fan of this unit is without static pressure If static pressure is required please specially notice it on purchase order 5 Running condition of cooling outdoor temperature 5 C 48 C Running condition of heating outdoor temperature 20 C 27C 13 PRODUCT DC Inverter Multi VRF Service Manual Model Combined unit GMV Pdm1570W4 NaB M Sound Pressure Level Power Supply Heating Recommended Power Lines Capacity Moisture protection Climate Type Gas Pipe Liquid Pipe Connecting pipe Pipe 20 Container Loading Quantity 40 Container Loading Quantity 40 High Cube Container Dimensions of Unit Dimensions of Package Connection Method GMV Pdm1650W4 NaB M GMV Pdm280W NaB M GMV Pdm450W NaB M GMV Pdm1700W4 NaB M GMV Pdm335W NaB M GM V Pdm450W NaB M GMV Pdm450W NaB M GMV Pdm450W NaB M GMV Pdm450W NaB M GMV Pdm450W NaB M Law fs GMV Pdm280W NaB M GMV Pdm400W NaB M GMV Pdm450W NaB M GMV Pdm450W NaB M 380 41 5V 50Hz 3Ph 6x5 10x5 10x5 10x5 6x5 10x5 10x5 10x5 10x5 10x5 10x5 10x5 IP24 IP24 IP24 T mn n G unit Notes D The sound level is tested under circumstance of semi anechoic chamber the value of noise could be a little higher in actual operation 2 The data will change
211. red led blink green led dark yellow led dark Hanging indoor units red led blink green led dark yellow led dark MAINTENANCE 172 UT ge remi VRFService Manual High pressure protection Use pressure gauge to No Yes measure if the pressure is really high Replace the mainboard of outdoor unit Measure if the pressure switch is normal No es Refer to the Instruction m Manual for Indoor Unit eplace the pressure switc Check if the operation mode o indoor unit is set properly Yes No Check if the gas valve and liquid valve are fully open Fully open the valve Yes No Check if the front panel of outdoor unit is covered tightly Cover up the front panel properly Yes Check if the air inlet and No outlet of the indoor and outdoor exchanger is smooth Remove the obstructions es No Measure the fan motor and signal input Check if the indoor and outdoor fans run normally es No Measure the swing motor and signal input Check if the indoor swing louver is fully open Yes eck if the capacity output o No outdoor unit is equal to the capacity demand of indoor units Refer to the dial up of indoor and outdoor unit Yes No
212. rence between indoor units H 97 INSTALLATION VRE Service Manual Service Manual F 4 2 1 For outdoor unit with total rated capacity more than or equal to 60 0kW See the above picture for the piping methods Allowable m ft Minnene value Total length actual length of fitting pipe Total length actual length of fitting pipe actual length of fitting pipe L1 L2 L3 L4 L8 a b i Actual length Length of the furthest fitting pipe Equivalent length Equivalent length of fitting pipe i L6 L7 L7 L8 from the 1st branch joint to farthest indoor unit L m L5 L6 L7 L7 L8 i Height differences beween _ Outdoor unit at upper o L1 L5 L6 L7 L7 L8 i indoor unit and outdoor unit lower Height differences between indoor units 4 2 2 For outdoor unit with total rated capacity more than or equal to 20 0kW and less than 60 0kW See the above picture for the piping methods Allowable m ft Eus value 5 PIP Total length actual length of fitting pipe L1 L2 L3 L4 L8 a b i Actual length Length of the furthest fitting pipe L1 L5 L6 L7 L7 L8 i Height differences between Outdoor unit at upper indoor unit and outdoor unit mita lower Height differences between indoor units Equivalent length of fitting pipe L6 L7 L7 L8 from the 1st branch joint to farthest indoor unit L m L5 L6 L7 L7 18 INSTALLATION 98 una YRF Service Manual 4 3 Refrigerant Pipe
213. ressor exhaust temp sensor compressor casing top temp sensor high pressure sensor and low pressure sensor Switch protection high pressure protection over current protection Output control objects fan frequency compressor heat tape controlled by drive board compressor AC contactor 3 phase controlled by drive board gas bypass valve 4 way valve solenoid valve A oil equilibrium valve liquid bypass valve and capillary solenoid valve CONTROL 20 DC Inverter Multi VRFService Manual 485 communication interface indoor unit communication network and adaptor board shall be connected to the mainboard of indoor unit through 2 core 3 core pin header communication cable drive communication network and the mainboards CN11 CN14 of outdoor unit shall be connected to the drive board through 2 core 3 core pin header communication cable 2 Drive control system 3 phase power supply unit Reactor Communication Functions of various modules A Filter plate one of the two key functions is to filter and eliminate power interferences and ensure anti interference capability of the unit even in a rugged power supply environment the other one is to suppress interferences from power supply in order to prevent the operation of the unit from affecting other appliances such as TV Because inverter unit works in a special way that 15 relatively sensitive to interferences filter plate is normally arranged Because
214. rresponding 3 Network of outdoor units module 2 pin twisted wire is applied for communication among indoor units and its both ends are 4 pin XH plugs 2nd and 3rd positions are applied and shall be corresponding 7 3 3 3 Communication Address Setting Communication address setting includes address setting of indoor units address setting of wired controller address setting of communication of outdoor units qty setting of outdoor modules and address setting of communication of patch boards 7 3 4 Connection of Communication System 7 3 4 1 Communication among modules 15 realized by communication wire on mainboard of each module Directly connect mainboard by 2 pin and 4 port communication wire to realize communication among outdoor modules The communication interface ports on mainboard are CN16 CN17 and CN18 each of which are available 2 NO 1MODULAR NO 2MODULAR Qty code Address Capacity code SW1 Qty code Address Inverter drive plate Capacity code SW1 SW2 code SW3 inside the unit SW2 code SW3 ommunication inerface Communication Communication inerface inerface CNII CNI6 CNI6 To next CN12 CN17 CN E modular CN13 CN18 Communication CNIS p inerface 2 2 4 4 ON DIP ON DIP ON DIP B N2 B COM OUT3 ENS s Communication Communication Communication Communication inerface itierface 1 2
215. s oseo o1 UOY pue poppe 0 spoou YOM SJULIOTIIJOI jo 49940 1030ui JO urea 1990005 APAPA urea 11 99UU09 APAJA 1 ovejdoy ooutjroedeo joouuo JO pJoo y 12ouuooo pouonuoui UOSESI JON yooyo A TENUEIN yooyo A TENUEIN yooyo Ayyenueypy pouonuoui UOS 21 JON yooyo A TENUEIN yooyo UOrjeullguo JO POYRIN 51 JO Co SI 10 JO LECI Jo preoqureui JOU SI JOJOW JO SUI p egpesg 08915 209 JO po31oouuoo SI 10301 Ut JO p109 1 7 9 si Joyou SUL 19 IO pojoouuoo 100 SI 10300 JO avue wede z 9 UdYOIG 10 9500 SI pue U99A 9q p109 Jomod eur 1119 95182 JO uonduose 1 9A9 DJIQ yooyo yooyo Aq enue Ar uorneuLmuo Jo SUOJA SI 83001981121 jo poppe 991 soje1odo 9 soje1odo 1 9 osne Jo uonduoso q UOSEAI GA9 p
216. s it indicates Wednesday It is used for the switchover between unit 4and unit 12 Under the timing or clock setting status it indicates Thursday It is used for the switchover between unit 5and unit 13 Under the timing or clock setting status it indicates Friday It is used for the switchover between unit 6 and unit 14 Under the timing or clock setting status it indicates Saturday It is used for the switchover between unit 7 and unit 15 Under the timing or clock setting status it indicates Sunday 8 16 It is used for the switchover between unit 8 and unit 16 14 TimerTime It is used to set the timing or on off time of the selected indoor unit as well as to set the clock of the system RL UN It is used for the switchover between single and centralized control modes Shield It is used to deactivate some or all functions of a single or a group the indoor unit s on off It is used to start stop all indoor units CONTROL 46 Te minm VRFService Manual 5 3 Display View AUTO a ROOM SET INNER UNIT CHILD LOCK COM g m SHIELD MODE ERROR gna 11 E ON OFF SUN MON TUE WED THU FRI SAT iii inni 0 Fan speed It displays the fan speed of the indoor unit high medium low and auto It displays the running mode of the indoor unit auto cool dry fan and heat System clock It displays the current time hour
217. s well as the address of indoor unit Format Soft add Indoor unit add Displays when there is error at any indoor or outdoor unit Displays every operation state mode of indoor unit Speed display Displays High Medium Low and Auto speed of indoor unit Under group control mode it is displayed when checking grouping information Under address setting mode it 15 displayed when checking hard address When central control works in normal operation monitoring displays when control controlling monitoring signal 15 transmitted operation monitoring and controlling 1 displayed S ils presen ins fois GMD Mandweek OT When Indoor on addresses of present online indoor unit is displayed When soft address fits Project Installation List Instruction to display interface System Setting Including Address Setting and other functions and it 1s set when installation personnel are adjusting units It is not recommended that users operate it The usage of this function requires password Address Setting Since characters from 01 to 64 are fixed as the addresses of controlling communication modules displayed by central control hereinafter called soft addresses and the addresses of communication modules themselves hereinafter called hard addresses are value from 0 254 thus there is address matching problem between central control and controlled communication module In order to solve this problem address mapping set
218. ser has installed the air conditioners in the child room bedroom and living room after the debugging it is available to view the indoor unit No of each room and get clear about their corresponding relationship Indoor Unit Address Port 1 Indoor Unit 04 Port 1 Indoor Unit 05 Port 1 Indoor Unit 06 After get clear about the relationship of the indoor unit no and the room the user can write Child Room Bedroom Living Room on the place 1 2 and 3 respectively on the label and then stick the label to the inner side of the smart zone controller See 5 5 8 for the label CONTROL 52 DC Inverter Multi VRF Service Manual RZ di Fig 5 5 8 Label of Smart Zone Controller 5 6 Attachment Error code list Errors code list of Multi VRF Indoor Units 53 CONTROL DC Inverter Multi VRF Service Manual 6 CENTRALIZED CONTROLLER 6 1 Central Control ZJ7011 6 1 1 Function Main characteristics of Centralized Controller A set of Centralized Controller can control 64 communication modules and can connect to as much as 1024 indoor units It can conduct individual control with any separated area or unified control It can monitor or control On Off Mode Temperature setting and Timer On Off of indoor unit etc It can realize the central single or select control to all indoor units It can organize several indoor units into groups as you desired and conduct unified control
219. setup in which casethe TIMER OFF icon will blink The method of setting is the same TIMER OFFas for TIMER ON 2 2 2 Guide for operation General operation 5 GREE 1 After powered on press ON OFF button the unit will start to run Note When it is powered off the guide louver of main unit will close automatically 2 Press MODE button select desired running mode or press COOL or HEAT mode to enter into the corresponding operation directly 3 Pressing button to set the desired temperature It is unnecessary to set the temp at AUTO mode 4 Pressing FAN button set fan speed can select AUTO FAN LOW MID and HIGH 5 Pressing gt button to select the swing 33 CONTROL VRE Service Manual Service Manual F 2 2 3 Guide for operation Optional operation ON OFF CLOCK TIMER ON 1 Press SLEEP button to set sleep 2 Press TIMER ON and TIMER OFF button can set the scheduled timer on or timer off 3 Press LIGHT button to control the on and off of the displaying part of the unit This function may be not available for some units 4 Press TURBO button can realize the ON and OFF of TURBOfunction 2 2 4 Introduction for special function About blow function This function indicates that moisture on evaporator of indoor unit will be blowed after the unit About blow functionis stopped to avoid mould 1 Having set blow function on After turning off the unit by pressing
220. shall not be higher than 15 Purge and make leakage detection under pressure 1 Tighten the nuts Connection of indoor unit and outdoor unit 2 Provide proper protection to the outdoor connection pipe communication wires and power supply 1 Keep the pressure for 24 hours Except for the influence by temperature it 1s Leakage detection under pressure deemed acceptable if pressure drop is within 0 02MPa With the temperature change by 1 C the pressure will change by approx 0 01 MPa 1 Establish vacuum simultaneously in the gas pipe and liquid pipe Vacuuming 2 The vacuuming time shall be long enough 3 Put still for 1 hour after vacuuming It is deemed acceptable if the pressure will not rise Add refrigerant Add refrigerant according to the volume as specified on the engineering drawing Open the valve of outdoor unit Remarks 1 Described above are general working procedures The procedures might vary with the site conditions 2 For detailed installation rules please see the description in each chapter 89 INSTALLATION VRE Service Manual Service Manual 2 FLOW CHART OF INSTALLATION Purchase material Install Install outdoor unit Install outdoor fan connecting pipe Weld Install remote Connect Connect Install Install Connect monitoring control communication cable power cord drain pipe air duct power cord Purge and leak
221. sort out and save the data Record the trouble and troubleshooting during the debugging for future reference Then make a debugging report and desee ERE PESE Fd RR Ua d 153 4 MAIN PARAMETERS AND REFERENCE VALVES FOR DEBUGGING 154 5 COMMON TROUBLES DURING DEBUGGING ecce eee eee e eee eene 156 bii irr err MPH 156 PAPIER 159 OPORTABEEDEBUGGDEDR 165 todi cca 165 62 165 6 3 CEC ONC CUNO Ire 166 I TROUBLE SHOOTING ani 168 1 1 Trouble Display of Indoor Unit 168 1 2 Trouble Display of Mainboard LED of Outdoor Unit eere eere eere eene enun 169 1 3 Number of indoor units display 171 1 4 When the patching board is not communicated with indoor unit if the complete unit stops the address code of patch board and E6 will be displayed alternately as shown in Fig 1 and that is normal condition cccccsscscscsccccccccccccccccccscscsccccccccccccscscscsccccccccccccceccccccscscscscccccecccescscscsccoes 171 2 FLOW CHART OF TROUBLESHOOTING 173 PN SUC 1 T 173 22 Low
222. st function will be defaulted to be closed 2 2 5 Changing batteries and notices 1 Slightly to press the place with along the arrowhead direction to push the back cover of wireless remote control As show in figure 2 Take out the old batteries As show in figure 3 Insert two new AAA1 5V dry batteries and pay attention to the polarity As show in figure 4 Attach the back cover of wireless remote control As show in figure N NOTE When changing the batteries do not use the old or different batteries otherwise it can cause the malfunction of the wireless remote control If the wireless remote control will not be used for a long time please take them out and don t let the leakage liquid damage the wireless remote control The operation should be in its receiving range It should be placed at where is 1m away from the TV set or stereo sound sets If the wireless remote control can not operate normally please take them out after 30s later and reinsert if they cannot normally run please change them Sketch map for changing batteries 35 CONTROL VRF Service Manual Service Manual F 3 WIRED REMOTE CONTROLLER 3 1 Wired Controller Z60351F Z60151F Z63351F Z63151F 3 1 1 Operation View Gi 00020 01 UDO OO 12 3 1 1 1 Wired Controller Z60351F Z60151F E TTT _
223. t both go through the power supply box 2 d Fix the bottom case on the power box 2 by screws e Tidy up the power cord and the communication line inside the smart zone controller f Close the cover 5 2 2222 Fig 5 5 4 Concealed Cable Installation 1 right left wiring CONTROL 50 DC Inverter Multi VRFService Manual ud Fig 5 5 5 Concealed Cable Installation 2 up down wiring a a a ae P Note the power cord must be separated from 807 e the communication line to avoid any interference MESE god a Soia Ji z ail Hole for the power cord x E Fig 5 5 6 Installation Diagram 51 CONTROL Service Manual Top Cover including the display board After the installation it is necessary to make the debugging to guarantee the normal communication 5 5 2 Debugging and Viewing the Port No and the Indoor Unit Address Debugging setting In the event that the unit is initially powered on the setting for the project changes or the serial port is replaced and then it 1s available to go to the debugging status by pressing Mode and Thu simultaneously for five seconds under which page it 15 enabled to check automatically and distribute the address of the indoor
224. t the refrigerant from exceeding the limit concentration please consult your dealer If no proper measures it might cause human suffocation in case of refrigerant leakage Please install at a position that is strong enough to support the weight of machine If the installing position is of low strength the machine may drop down and thus cause human injury Please carry out installation in accordance with the rules for preventing the typhoon or earthquake The machine may tip over if the installation does not comply with the requirements The electrical cabling shall be carried out by qualified electricians in accordance with the Safety Code for Electrical Equipment relevant local rules and the installation instructions Make sure to use the special purpose circuit If the power circuit capacity is low or the construction is improper it might cause electric shock or fire accidents Please use suitable cables and connect them securely Please fix the terminal joints securely The terminal connection shall not be affected due to any external force applied onto the cable Improper connection and fixing may cause heating and fire accidents Keep the cables in correct shape and prevent them from protruding upward Please protect them securely with repair board Improper installation may cause heating and fire accidents When erecting or relocating the air conditioner do not let any air enter into cooling circulation system except
225. t the worn batteries and insert two new ones Make sure the two poles are correct 2 Re attach the cover it 1 All the prints and code no will be showed on the displayer after the insert of batteries The remote control can be operated after 10sec 2 The lifetime of the batteries is about one year 3 Don t confuse the new and worn or different types of batteries 4 Remove batteries when the Remove the cover remote control is not in use for a Re attach the cover longtime to avoid mal function caused by liquid leakage t 5 The remote control should be A placed about 1m or more from the open TV set or any other electric appliances 6 The remote control should be used in the receivable range the RESET KEY reception range 1 10m 1 7 When the remote control can not be controlled in the situation of inserted batteries please remove B p the back cover and press e d button to make it normal bc 2 Insert dry cell battaries attachment CONTROL 30 E Manual VRFService Manual 2 2 Wiredless Remote Controller YB1FA 2 2 1 Names and functions of wireless remote control A NOTE Be sure that there are no obstructions between receiver and remote controller Don t drop or throw the remote control Don t let any liquid in the remote control andNote Be sure that there are no obstructions bet
226. t will swing back and forth from up to down and then loosen the button the unit will stop swinging and present position of guide louver will be kept immediately 2 Under swing up and down mode when the status is switched from off to Il if press thisbutton again 2s later I status will switch to off status directly if press this button again within 2s the change of swing status will also depend on the circulation sequence stated above About switch between Fahrenheit and Centigrade Under status of unit off press MODE and buttons simultaneously to switch C and F CONTROL 34 YRF Service Manual About new function of defrosting It indicates after starting this function by remote controller and the unit has been under defrost status If turn off the unit by remote controller the unit will not stop defrosting until it 1s finished if change setting mode by remote controller the function which 15 set last time won t be carried out until defrosting finished Operation of this function on or off If remote controller is under off status press mode button and blow button simultaneously in order to enter or cancel this new function If the unit is under defrost mode dual eight position on remote controller will display H1 If switch to heat mode the position will display H1 which flickers for 5s in which case press button H1 will disappear and setting temp be displayed After remote controller is powered on the new defro
227. tage Protection DC Bus Low Voltage Protection Check if the input voltage is lower than 320V Replace the compressor drive board It is finished Note For both the compressor and fan motor drive boards the solution to DC bus low high voltage protection is the same 5 Solution to the Open Phase Protection Open Phase Check if the power cord of the compressor is connected Replace the compressor drive board It is finished MAINTENANCE 184 Adjust the voltage to 380V and then see if the error is eliminated NO Adjust the voltage to 380V and then see if the error is eliminated NO Connect the power cord properly and see if the error is eliminated NO NENNEN vii service Manual VRFService Manual 6 Solution to the Current Transducer Error Current Transducer Error Replace the compressor drive board Itis finished 7 Solution to IPM High Temperature Protection IPM Module High Temperature Protection Check if the error arises once the power is on YES Replace the compressor drive board NO eck if the screw have been fastened and if the coolant have been applied to the IPM module It is finished 8 Solution to Fan Motor High Drive Current Protection Fan Motor High Dr
228. te to RUN state the mode of other master indoor units or slave indoor units shall be kept identical to its mode otherwise the system will give out mode conflict error Therefore when there are several master indoor units the address code of the unit shall be set from lower to higher according to priority level INSTALLATION 136 Service Manual Dial up switch 4 I O Setting of ambient temperature acquisition point This setting is mainly used when the temperature of air conditioner area differs largely from the air inlet temperature of the unit Meanwhile this setting 1s only valid when the receiver 1s connected including the setting of temperature acquisition point at air inlet and setting of the temperature acquisition point at receiver head The factory default setting 1s acquisition of air inlet temperature dial up switch pulled to position Dial up switch 5 L H Setting of high low static pressure fan This setting includes the setting of high static pressure fan and low static pressure fan adjusted as needed for the project The factory default setting is low static pressure fan dial up switch pulled to ON position Cautions 1 The above settings must be done under power shutdown state 2 The dial up switch of function code 1 classified into 3 bit code 4 bit code and 5 bit code The 4 bit code or 5 bit code is used for duct type unit only including multi duct type unit and 1 to 1
229. ter plugging out the card Upon plugging out the card to stop the unit the running states of the unit will be memorized After plugging in the card the unit will be under standby state or resume running according to settings The AC will run when the customer plugs in the card and automatically stop when he plugs out the card which ensures unit off after leaving of persons and saves energy Fig 1 is about simple sketch for communication network of detection control board GMV series Indoor Indoor Indoor Indoor control control control control Outdoor unit Detection Detection Detection Detection Control Board Control Board Control Board Control Board 12 1 Communication Network of Detection Control Board for GMV series 8 2 Working Process of Gate Control 1 If the gate control card is not plugged in after powering on the complete unit the indoor unit will be in the state without gate control function and can be operated by remote controller or buttons on it 2 Powering on the AC and plugging in the card the unit will be in the state with gate control function after 5 second detection The present running state of the AC won t be affected the unit on off state will be kept after plugging in the card If plugging out the card the AC will automatically stop after 5 second detection Once plugging in the card indoor unit will be considered as the one with gate control function whi
230. the engineering drawing shall be purchased according to the actual quantity of works e g hanger frame cable duct etc 3 Check if the outdoor unit indoor unit communication wires and accessories are complete Material Selection and Equipment Inspection Communication 4 Switch on indoor and outdoor unit and ensure there is no wire 1 The power cables shall be separated from communication wires at a least distance of 10cm 2 To avoid breaking the communication wires please do not use strong force Connection 3 For multiple units please mark them properly display of Communication Wire Error E6 Address 1 Each indoor unit under the same system has a unique address dial code dial code 2 The wired controller and its corresponding indoor unit have the same address dial code 1 Select the remote control mode Remote Control 2 The centralized controller and communication module shall be installed free from the source of interference Installation of indoor 1 The power cable must meet the specifications unit 2 The indoor units under the same system must be arranged under unified power supply 1 The PVC pipes must meet the specifications 2 A specific gradient must be provided along the water flow direction Installation 3 Carry out water detection after installation Drainage Pipe 4 Carry out thermal insulation to the drainage pipe only after the water detection is accepted Thermal 1
231. ting Acknowledge welding flux gt Add welding flux Cooling continue to fill nitrogen for over 10s Shut off nitrogen Make visual inspection to the weld quality 113 INSTALLATION Service Manual Service Manual a Cleaning of portions for braze welding OHS MING Removing metal materials at connection portion Removing oxidation film using woven fabric abrasive cloth or abrasive paper If any oil stain is existent acetone or spirit solvent shall be used for ungrease treatment At the same time compressed air at 0 8 gauge pressure shall be used for cleaning The cleaning shall be repeated not less than 3 times until there is no dirt discharged b Check whether clearance between pipe and connector is proper Put the connector into the pipe and face downward If the connector does not fall down depending on friction force the clearance is considered proper c Nitrogen filled protection e Since vigorous oxidation would occur on the surface of copper pipe at braze welding temperature to effectively restrain the generation of oxide coating in copper pipe nitrogen filled protection for copper pipe is necessary e After copper pipes are assembled nitrogen shall be filled in copper pipe connectors e Method for charging nitrogen into copper pipe Nitrogen charging method Pressure
232. ting 1s required to be conducted before project adjusting CONTROL 56 DC Inverter Multi e ae tin 6 2 Centralized Controller CE51 24 E M 6 2 1 Function Used in multi VRF system a set of centralized controller can connect with 64 communication modules to control 1024 sets of indoor units Through it indoor unit s ON OFF operation mode set temperature fan speed swing state etc can be queried and controlled This device can realize single group center control and conveniently manage the air conditioners through weekly timer and long distance shield setting Single control is to control a single unit Group control 15 to control a preset group of indoor units Center control 1s to control all indoor units Single group center shield 1s to shield the operation parameters of indoor units from long distance Single group center weekly timer 15 to set TIMER ON OFF of the air conditioner from long distance Clock setting 1s to set week hour and minute and let them show The centralized controller can automatically detect the online region and indoor unit and display present indoor unit s operation mode set temperature fan speed swing weekly timer shield etc For the purpose of quick inspection upon malfunction of any indoor unit its corresponding error code and region no will be displayed and blink The centralized controller integrating multiple communication modules makes up a commun
233. to 32 indoor units by two pinboards either of which can connect with up to 16 indoor units What s more the quantity of communication modules used is the same as that of pinboards In this project pinboard 1 1s connected with the communication module with address of 02 and indoor units address 01 04 of office 7 8 corresponding with independent communication Net 2 Pinboard 2 15 connected with communication module of address 03 and indoor units address 01 08 of office 1 2 corresponding with independent communication Net 3 The outdoor figure is as follow i ri MOM mm mem Mim or communication module and 4 core 3 neilsbed with Outdoor Unit Mark C Centralized controller cabinet is mainly used to put communication modules together Refer to Section 3 Instruction to Installation Procedure of System about its figure and connection method of communication modules Mark D Centralized Controller ZJ701 For the first use of it address mapping setting must be made to specify addresses of communication modules which should be controlled In this project example there are 3 communication modules with the address of 01 02 and 03 which are displayed in the centralized controller correspondingly Mark S1 S2 and S3 Telephone 3 way triple adapters are used to connect communication modules with communicating net of indoor and outdoor units Refer to Section 3 Instruction to Instal
234. troller can replace 1 16 selected wired controllers to uniformly set or control the indoor units Refer to Fig 5 1 1 Fig 5 1 2 about the Sketch map to the relation among the region controller region monitoring controller and region wired controller 00 Function mode Initial state Project Debugging Region Controller iid 01 Function mode 5 Region monitoring controller 02 Function mode Region wired controller Fig 4 1 1 Before using the controller functions must be selected by the personnel who performance the installation with the requirements of users Please refer to Project Debugging Setting section for the details Note If the controller is set to be region wired controller the wired controller of the selected indoor unit must be removed The region controller can be matched with long distance monitor As a region monitoring controller its control is subject to that of the long distance monitor In the same group one of the region controllers can be used as region monitoring controller and matches one or more region wired controller which replace s one or more wired controller in which case the region monitoring controller can also monitor or control the region wired controller Features 00 Function mode m Initial state 1 00 function mode is factory initial state 2 Before using 01 or 02 function mode must be selected Features 1 Both single control and central control to 1 16 indoor units in Project a region a
235. tware and if there is any repeated code or wire dropped off When it is normal the address of wired controller shall be corresponding to address of indoor unit which is shown as Fig A Datalnfo Ix BF ra D xTE 10565523 Ole Ix BB lu Ox AF D IUD Ox AC 0 ComUsed Conver tor E Address of wired controller Halers 3 09 4 om li i 2 3 4 5 B T Address of inddor unit MainIDU Froti_16MKr 2010 02 24 16 31 50 0 Mins Fig A Service Manual Service Manual m When there is repeated address code of indoor unit the display of wired controller is normal but the indoor unit with repeated address code can t be displayed as shown in Fig B Ix F8 OT UxTE 01585523 xBE 015 Dx BB 0 ll Ox0A Dx AC i Un Display of address of wired controller is normal ComUsed Convertor ts UDUni ts 1 and 2 have repeated addresses and the MainIDU indoor units can t display their addresses Il 2010 02 24 18 35 41 4 Mns Fig B When address of wired controller is the same with that of other wired controller or it is disconnected the address can t be display as shown in Fig C Datalnfa 0x 8F okt Oki OxTE 0 65523 Ox6E Tm xBB no OLO 0 no Ox AC Comlzed
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237. unit 10 minutes later the debugging 15 finished and the indoor unit which gains the address 1s under control and the unaddressed indoor unit is not Viewing the serial port and the indoor unit address It is available to go to the debugging page by pressing and Thu simultaneously for five seconds under which page it 1s enabled to view the serial port and address of the corresponding indoor unit The press on Confirm Cancel can confirm this debugging setting and go to the viewing state of the current indoor unit otherwise this setting will not be saved See Fig 5 5 7 for the debugging operation Fig 5 5 7 shows the indoor unit 1 and indoor unit 2 both of which are connected with the port 2 The address of one is 01 and the other 15 04 4 GREE GREE eR 7 n TT Press Mode and Thu Press the code button of the indoor unit Press Confirm Cancel to make a simultaneously for five seconds to inquire about its corresp onding serial confirmation to go to the debugging page port and address Fig 5 5 7 Debugging 5 5 3 Labeling A label is provided to identify the relationship of the indoor unit No and the corresponding room name The user can write down the indoor unit No and its corresponding room name on the label which then will be stuck to the inside of the cover of the smart zone controller so that the user can be clear about the control object For instance when the u
238. unning Cooling running D Is startup being initialized Is compressor being protected Yes 4 way valve stop Outdoor fan cooling control mode 4 way valve stop Outdoor fan protection control Compressor capacity control Compressor protection control Outdoor electronic expansion valve Outdoor electronic expansion valve 4 way valve stop Outdoor fan cooling control mode Compressor initialized Outdoor electronic expansion valve DC Inverter Multi VRF Service Manual fully open stop fully open Heating running Heating running Is startup being initialized Is compressor being protected 4 way valve open v 4 way valve open 4 way valve reverse 4 way valve open Outdoor fan heating control mode Outdoor fan protection control mode Outdoor fan defrost control Outdoor fan heating control mode Compressor capacity control Compressor protection control Compressor initial defrost control Compressor initialized Electronic expansion valve of outdoor unit capacity control Electronic expansion valve of outdoor unit capacity control Electronic expansion valve of outdoor unit fully open Electronic expansion valve of outdoor unit capac
239. unt of indoor units in a same refrigerating system 16 When the one patch board equipped is not enough patch boards shall be added and maximum 8 patch boards can be connected in a system Eg There are 2 outdoor modules and each one equips with a patch board which can maximum connect 16 sets of indoor units So there 32 sets of inddor units can be connected There are 45 indoor units actually so the following qty of patch boards shall be added 45 32 16 0 81 That means one patch board shall be added 7 3 4 4 When extra patch board shall be added the added patch board can directly connect with the original patch board 134 DC Inverter Multi VRFService Manual 7 3 4 5 Connection of Indoor to Indoor Communication The connection of communication among indoor units is limited in the network of the same patch board which can connect maximum 16 sets of indoor units SINGLE MODULAR COM OUT3 Communication inerface Inverter drive plate inside Address code S2 the unit Communication inerface Pinboard 1 A CNI B Communication inerface Capacity code SWI _ Qtycode Address SW2 code SW3 Communication CN3 inerface eee cw B Communiation line
240. uooog asned o qissoq pouonuoui UOS 21 JON SUIUUN JOU SI FULA SI YOIYM yun JO 10 0UI tuone1odo ZULA UJ Suruuni jou SI uone1odo gui ooo U V uorneurmuo JO POPPIN Yonu 00 SI SJUBIOSIIJOI jo SOSBOIOUL Ayyeurouqe omnssoud So9je1odo K eurrouqe ue 9 95182 JO UOSEAI 9 4514 oinssoud 1915 LC 07 EMEN N S DEBUGGING cs De Lal Lal cs Lal Co VRF Service Manual Service Manual M 6 PORTABLE DEBUGGER 6 1 Function Introduction Portable debugger is a set of specialized installation debugging tool for personnel of air conditioner debugging and testing Its main features include 1 Monitor various unit parameters and support multiple protocols with automatic protocol identifying function 2 Support complete unit debugging mode Support indoor unit debugging mode of GMV multi VRF series 3 Possess easy operation and portable features Note Different software support different numbers of protocol 6 2 Display and Button gt GREE KELO GELET __ FIN linda PORTABLE DEALER Power supply LED yellow This LED is light when display panel is energized Malfunction LED red This LED 15 light when there is communication ma
241. ursor stops at hard address position hard address 15 blinking press CANCEL button to make the setting value ineffective in which case the will be displayed Soft address is the No displayed in 1 64 grid of LCD and hard address 15 the actual one of communication module INDOOR UNIT VOI In this example the centralized controller controls 3 communication modules with the address of 01 02 and 03 i e hard address is 01 02 and 03 For convenient management soft address will be set to the same as hard address 1 01 001 02 002 and 03 003 CONTROL 80 VRFService Manual If communication is normal after setting the centralized controller will display as the following figure Press this button to check indoor unit status nder corresponding soft m address Soft address display 01 02 and 03 01 02 and 03 of soft address is displayed which indicates normal communication of these 3 communication modules 2 PRESENT UNIT NO displays 01 08 which indicates No 08 indoor unit under 01 communication module is being checked 3 Press ROOM REGION button to check other indoor units status under present communication module Indoor units status is automatically detected without setting in centralized controller 81 CONTROL VRF Service Manual Service Manual m Step 5 Troubles
242. ut a support of suitable height in front of the left electric box e Take off the electric box and lay its front part on the support Loosen the 4 way valve parts Remove the 4 way valve parts e Heat the four nozzles of the 4 way valve by gad welding Remove the 4 way valve e Before solder off the 4 way valve record the direction of 4 way valve and installting position of each nozzle Note do not burn the other parts during soldering e Remove 4 way valve from the pipeline e Mount a new 4 way valve in the right position e Conenc the new 4 way valve to the pipe e Wrap the 4 way valve with wet cloth in case of burnt gliding block and inflow of water eCharge nitrogen for welding whose pressure 15 0 540 1kgf 7 Mount 4 way valve parts 8 Fix electric box and the wire fixer 9 Mount front panel
243. v V BR Filter Board rU FU m7 1DUT Env CD CN36 kk 2 mense 15 ose Protecto XT2 T 1 5 al il a se i i wai w32 5 C ronsformer 3 P1 Mid FAIR iquid By pass Valve aco B 7 Y SL 3 my p 2 4 22 X 4 ens th 39 V WH Mi WH 14 5 Refrigerant Valve gt u FARA T Transparement Black Jacket 6 3 Compe Dil Return Valve Jacket RT g 5 043 CNS fek T 1 4 Woy Volve ne 8 pane 2 9 2 YV3 YV4 Gas By poss Valve EHI Dit o NO YV2 YN7 Hi Balance Valve APL CN36 oae T di Hil Lidi Valve w79 wa0 des av U 0 YVL YV9 apllary Valve sl ABE eR wag 4 e ou FCICCNSO FEN cng CVD ravi 9 di Le gt COMP3 4 CPUS Comp3 Uil Return Valve TI ZIONI ER n A A 1 e 9 FU Fuse A Id 3 322 U KM2 A2 mt w72 Ca mam Tur COMP zu Du 8 QF Circuit Breaker 5 w78 KMT EKV 103 T YEGN W30 YEGN do 7 Terminal Board y wl wi ni Fy PE PE um wo 6 AC Contactor He BU t BU Ak RT 5 FAI FAC DOver Current Protector Left RIGHI 4 Electronic Expansion Volve LBB L3 QuT AP2 m L2 DUT cot LE 3 MI M2 Fon Motor i jac Le Li DUT ku eu ier Aci e Variable Frequency Compressor zi FAel ra APS c s 63604642 Constont F
244. viewing status Mode changes to 00 in temp display area and press Y to adjust the display Timer display area will show the s n of error and error code The final error shown is the 5th error Function V CONTROL 40 DC Inverter Multi VRFService Manual 3 2 2 Dimension 92 PEREEBP O O 00 3 2 3 Installation of Wired Controller f Socket housing installed in wall Base plate of controller Screw 4 25 Control Panel Screw ST2 2X6 5 Notice for installation under the guidance of Fig 3 2 3 5 Cut off power supply before install the electrical components it is forbidden to carry out the installation with power on 5 Get one end of the 4 core communication cable put it through the rectangular hole on the base board on the wire remote controller C Hold the base board of controller on the wall then fix it to the wall with M4x25 screw Plug the 4 core communication cable into the slot on the wired remote controller then fix the controller panel with base board together 41 CONTROL VRF Service Manual O Service Manual F 4 REGIONAL CONTROLLER 4 1 Function Region monitoring control and region wired control are the two main control functions for region controller Region monitoring controller can monitor or control 16 indoor units of a group for inquiry and single or centralized control Region wired con
245. w oil separator 5 Mount the fixing screw of oil separator and electric heating tape H Electric Heater Loosen the screw sas the spots Electric Heater Fix the screw PE 21 Cc e Weld the spots e Remove the left and right front panels e Loosen the screws of oil separator e Loosen the electric heater on the oil separator e Slder off the connecting pipe Note do not burn the other parts during soldering e Move the oil separator from the chassis eWeld the 4 connecting spots on the oil separator eCharge nitrogen for welding The pressure of nitrogen should be 0 50 Ikgf cm relative pressure Note do not burn the other parts during soldering e Fix the screws of oil separator e Mount electric heater 211 MAINTENANCE DC Inverter Multi VRF Service Manua
246. ween receiver and remote controller Middle fanput the remote control directly under the sunlight or any place where is very hot AUTO 7 FAN OPER ON OFF Press this button the unit will be turned on press it once more the unit will be turnedoff When turning on or turning off the unit the Timer Sleep function will be canceled but the presetting time 1s still remained MODE Press this button Auto Cool Dry Fan Heat mode can be selected circularly MODE buttonMODEAuto mode 1s default while power on Under Auto mode the temperature will not be displayed Under Heat mode theinitial value is 28 C 82 F Under other modes the initial value is 25 77 F De 6 VRE Service Manual Service Manual SLEEP Press this button Sleep On and Sleep Off can be selected After powered on SleepSLEEP buttonSLEEPOff is defaulted After the unit is turned off the Sleep function is canceled AfterSleep function set up the signal of Sleepwill display In this mode the time of timercan be adjusted Under Fan and Auto modes this function is not available FAN Press this button Auto Low Middle Highspeed can be circularly selected AfterFAN buttonFANpowered on Auto fan speed 1s default Under Dehumidify mode Low fan speedonly can be set up gt AUTO a a _ ml 7 Low fan Middle fan am High fan CLOCK Press this button the clock can be set up signa
247. wired controller is located on the back of wired controller Below is factory default setting c jl did Address The default setting of address dial up code is 0000 and the address is 1 See above for the position of dial lever INSTALLATION 138 E VRFService Manual Dial up Value The dial up value of address code is set in binary system The dial up value is 0 when the lever is dialed to ON end the dial up 15 1 when the lever 15 dialed to numerical end on opposite side For number 4 1 on the address code the dial up 4 refers to high bit and the dial up 1 refers to low bit Dial up Table 4 bit Dial up Switch Address gt N Example 1 If the dial value is 0111 this represents that the serial number is 8 the pins 1 2 amp 3 of the dial switch are dialed to the opposite end of and the pin 4 is dialed to Example 2 If the dial value is 1010 this represents that the address is 11 the pins 2 amp 4 of the dial switch are dialed to the numerical end and the pin 1 amp 3 are dialed to Refer to the following figure y m d ri did did Address Address Address 8 dial up value 0111 Address 8 dial up value 1010 7 4 3 Capacity Code On the mainboard of indoor unit two 4 bit DIP switches are used to distribute the address and capacity of indoor units The 4 bit DIP
248. witch with enough capacity must be installed The air switch shall have both the magnetic tripping and thermal tripping functions to ensure protection against the short circuit and overload e Earthed Requirements The air conditioner belongs to I type electric appliances The reliable earthed action is a must The yellow and green wire inside the air conditioner 15 the earthed wire Do not use it for other purpose or even cut off it Do not fix it with tapping screw Otherwise it may cause electric shock The earthed resistance must meet the requirements of national stansard GB17790 There should be reliable earthed terminal for the power supply Never connect the earth lead to the following articles D water pipe 2 gas pipe 3 drain pipe 4 unreliable place considered by professionals 7 2 Specifications Of Power Cord amp Circuit Breaker Total vacuum Vacuum Total Power switch switch for each power wire capacity combination unit diameter Wire diameter for Model a each combination unit GMV Pdm224W NaB M 380 415V 3Ph 50Hz GMV Pdm280W NaB M 380 415 V 3Ph 50Hz GMV Pdm335W NaB M 380 415 V 3Ph 50Hz GMV Pdm400W NaB M 380 415V 3Ph 50Hz GMV Pdm450W NaB M 380 415 V 3Ph 50Hz GMV Pdm504W NaB M 380 415V 3Ph 50Hz GMV Pdm560W NaB M 380 415V 3Ph 50Hz GMV Pdm615W NaB M 380 415 V 3Ph 50Hz GMV Pdm670W NaB M 380 415 V 3Ph 50Hz GMV Pdm730W NaB M 380 415V 3Ph 50Hz GMV Pdm785W2 NaB M 380 415V 3Ph 50Hz GMV PASSW NAB
249. with the change of products Refer to those parameters listed on nameplate 8 The charge amount of refrigerant in the list is the datum when there 15 not drop height vertically between indoor unit and outdoor unit without consideration of connection pipe So calculate the additional charge amount according to actual condition during installation 5 Section area of lead wire is only applicable for 15 m distance If above increase the section area to avoid overload of current which would cause burnout of lead wire The outdoor fan of this unit is without static pressure If static pressure is required please specially notice it on purchase order Running condition of cooling outdoor temperature 5 C 48 C Running condition of heating outdoor temperature 20C 27C PRODUCT 14 DC Inverter Multi VRFService Manual Model Combined unit GMV Pdm1750W4 NaB M GMV Pdm1800W4 NaB M GMV Pdm400W NaB M GMV Pdm450W NaB M AGMV Pans NAM AGMV Pans NAM GMV Pdm450W NaB M GMV Pdm450W NaB M GMV Pdm450W NaB M GM V Pdm450W NaB M kW 175 0 180 0 kBtu h 397 100 614 160 195 0 200 0 665 340 682 400 Cooling Capacity Heating EE Sound Pressure Level dB A Power Supply V Hz Ph Cooling kW Power input Heating kW Cooling A Current Heating Power Lines Type Gas mm 12 45 14 32 14 32 14 32 1 2 13 9013 90 13 90 22 25 25 6 25 6 25 6 20 02 24 85 24 85 24 85 40 40 40 40 14 32 14
250. y connecting the RS485 main interface to the user s BMS system under the involvement of the Modbus protocol Realize the monitoring on the settable parameter of the unit Realize the monitoring on the running status of the unit Realize the monitoring on the error status of the unit Be of multiple monitoring points allowing up to 255 units in one network 7 2 3 Product Accessories List Notes When Gree provides BMS interface module only so that the user needs to integrate the building management system BMS by himself according to interface protocol Optoelectronic Optoelectronic isolated EN02200020 Optional Poren isolated converter converter GD02 Optoelectronic Optoelectronic isolated Di l only wh h isolated RS485 LN02200010 Optional Optional only when meeting the condition Communication Remote control parts module kit ME30 00 E2 MC200030 Standard For export including communication module In conclusion Refer to the service manual for more details about the interface of the remote monitoring system and BMS system File No JF00300218 amp JF00300219 If product specification has the modification our company will not issue a separate notice 8 DETECTION CONTROL BOARD 8 1 Gate control Function This detection control board is only suitable for Gree multi variable GMV indoor unit with gate control function The AC will run after plugging in gate control card and stop running af
251. y status cycle increase or decrease No of indoor units to easily inquire the status of each indoor unit B Single Central control status set running temp of indoor unit maximum is 30 C and minimum is 16 C C Timer setting status increase or decrease the timer on off time maximum is 24hr and minimum is 0 A Set the indoor fan speed of hi mid low auto B Successively press FAN button to set on off swing A Under single central control mode set on off timer of selected indoor unit TIMER Fe tan si B Under inquiry status inquire the timer setting of the indoor unit with current address ON OFF Set ON OFF of the indoor unit 2MODE and Lock Under single central control press MODE and ON OFF buttons simultaneously to start 7 ON OFF stop the lock of operation to buttons of wired controller for selected indoor units 2MODE and Shield mode Under single central control press MODE and TIMER simultaneously to start stop the 6 TIMER shield of operation to MODE button of wired controller for selected indoor unit 4 Wand Shieldine Tem Under single central control press and TIMER simultaneously to start stop the 6 TIMER 5 P shield of operation to Temp button of wired controller for selected indoor unit 7 ON OFF and Shielding Under single central control press ON OFF and TIMER simultaneously to start stop the 6 TIMER ON OFF shield of operation to ON OFF button of wired controller for selected indoor unit od Refer to power o
252. ystem will run with max capacity of indoor unit and with min capacity of indoor unit separately The debugging method 15 as cooling mode Note if the environmental conditions are not proper for running of cooling mode start the debugging of heating mode directly which 15 as the debugging of cooling mode 3 6 When the debugging is finished sort out and save the data Record the trouble and troubleshooting during the debugging for future reference Then make a debugging report and turn over it to users ENGINEERING DEBUGGING DC Inverter Multi E E Manual 4 MAIN PARAMETERS AND REFERENCE VALVES FOR DEBUGGING gt m mm N Reference Value of Debugging Parameters for the Pdm NaB Series Modular DC Inverter VRF System Debugging Items Parameter Description Reference Value System Parameters System high pressure System low pressure Outdoor ambient temperature Discharge pipe temperature of inverter compressor Shell top pipe temperature of inverter compressor Discharge pipe temperature of compressor with fixed frequency 1 Shell top pipe temperature of compressor with fixed frequency 1 Discharge pipe temperature of compressor with fixed frequency 2 Shell top of Unit compressor with fixed frequency Inlet pipe temperature of the heat exchanger Outlet pipe temperature of the heat exchanger Mid pipe temperature of the heat exchanger eDuring the startup and operation

DC INVERTER MULTI VRF SERVICE MANUAL

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