Service Manual
Contents
1. 5 9 D 5 7 c 02 D Rows Fin Gap mm Outdoor Qutbut of Fan Motor W x GW 6 _ s Fan Diameter mm 460 loai Pressure for the Discharge Side MPa j i Pressure for the Suction Side MPa Sound Power Level dB A H ML 0 BB 68 65 Outer 9529 Diameter o 12 1 2 16 5 8 Max 8 T o se The above data is subject to change without prior notice Air inlet O gt n Es 2 Air Outlet E b VN Doe Wireless remote control Heat This indicator is black for single Cooling cooling unit 1 Front Panel 2 Guide louver 3 Receiving window 4 LED Board 5 Wall Pipe v 6 Wrapping Tape M 7 Drainage hose 8 Connection pipe ET lt and connection wire Indoor unit P 6 7 ww z 8 p g g c7 Air Outlet Overall and Installing Dimension of Indoor Unit 1020 234 Left Tube exit hole Top View Right Tube exit hole Unit mm mm Unit 30000000001 3 HIIliIIIIIIIIIIIIIIIIIIIIIIIIINI IIIIIIIII2. Indoor ambient temperature Tamb 2 Basic Functions 2 1 Cooling Mode In this mode the indoor fan will run at preset fan speed When the compressor stops for outdoor unit malfunction protection the indoor fan will still run at preset fan speed gt Under this mode temperature setting range will be 16 30 2 2 Dehumidifying Mode Indoor fan will run at low speed invariably Swing will operate according to setting status gt Under this mode temperature setting range will be 16 30 C 2 3 Fan mode Under this mode indoor fan motor swing motor will run at setting status gt Under this mode temperature setting range will be 16 30 C 2 4 Heating Mode In heating mode if compressor is running indoor fan will delay to run to avoid cold air blowing When compressor stops blowing residual heating will enter Blowing residual heat In heating mode the unit is stopped by remote controller indoor fan will continue to run for 60s Fan speed can not be switched during blowing residual heat Under this mode temperature setting range will be 16 30 C 2 5 Auto Mode In this mode the system selects COOL HEAT and FAN mode automatically according to the change of ambient temperature Protection function is the same as that in cooling and heating mode 3 Other Control 3 1 ON OFF Each time the On Off D button of the remote controller is pressed the On Off state will switch once 3 2 MODE Selection Press the MODE button o
3. TOYOTOMI b service Manual MODEL GAN GAG A180IV GAN GAG A220IV Function COOLING HEATING Rated Voltage 220 240V Rated Frequency 30 100 72 25 100 82 25 100 74 Monte qoe rogum d 2500 5800 5300 2300 6400 5850 2000 6800 6500 Standard Total Capacity Btu h Low High 8500 19800 2300 6400 5850 6800 23200 Standard 18100 22200 Power Input W 520 2450 2020 Rated Input W 3200 Rated Current Aj Air Flow Volume m h H M L 850 750 650 Dehumidifying Volume l h EER C O P W W 3 22 3 61 Energy Class Model of Indoor Unit GAN 220 peu terr j el qiu ro 1400 1200 1100 1400 1200 1100 H M L 1600 8200 6500 5460 28000 22200 470 3250 1800 3250 D N 9 divi Output of Fan Motor w Fan Motor Capacitor uF Fan Motor RLA A Fan Type Piece Cross flow fan 1 Diameter Length mm 96 X 797 Evaporator Aluminum fin copper tube mm 218 nit Coll length 1 xheight H 787X400X25 4 787X400X25 4 coil width L Swing Motor Model MP28AA MP28AA Output of Swing Motor W A 3 15A Transformer 0 2A 3 15A Transformer 0 2A Sound Pressure Level dB A8 43 40 48 43 40 A H M L Sound Power Level dB A 58 53 50 58 53 50 H M L Dimension W H D mm 1020X319X234 1020X319X234 Dimension of Package 1078X325X390 1078X325X390 L W H mm Net Weight Gross Weight 13 17 13 17 kg JJ
4. Screw off the screws which fixed the rear grill ear side plate and rear side plate disassemble the rear grill 99 then can take off the rear side plate sub assy Rear grill Screws Operating Procedures Photos of outdoor unit 4 Disassemble the front case Screw off the screw which fix the front case then pull it upwards can take off the front Fontese case Screws 5 Disassemble cabinet Screw off the screws which fix the cabinet then can take off the cabinet Cabinet 6 Disassemble the electric box sub assy Screw off 2pcs screw which fix the electric Screws box cover then can take off the electric box cover Use the screw driver to screw off 2pcs on the electric box pull out the wire terminal of the electric box then lift it up can take off Electric box cover the electric box Operating Procedures Photos 7 Disassemble Valves Screws Unscrew the two screws fixing the gas valve unsolder the soldering point between the gas valve and the return air duct and remove the gas valve note when unsoldering the soldering point use wet cloth to completely wrap the gas valve to prevent valve body from being harmed by high temperature Unscrew the two screws fixing the liquid valve unsolder the soldering point connecting the liquid valve and the fork type pipe and remove the liquid valve Liquid Valve Gas Valve 8 Disassemble Axial Flow Fan Use a spanner to loosen the holding nut to rem
5. circuited Bright Bright Definition Stop for refrigerating overload Stop for heating overload Fault of communication with indoor unit Fault of communication with NCE module Fault of communication with computer Fault of outdoor ambient sensor Fault of outdoor tube sensor Fault of outdoor exhaust temperature sensor Communication malfunction en om indoo ni The parameters sent to NEC drive has some problem unit stop Fault of IPM temperature sensor Definition Air exhaust protection limit frequency Overcurrent protection limit frequency Refrigerant overload limit frequency Heating overload limit frequency Current 9 4A Frequency stays 2mins Current 12A Frequency stays 2mins limit frequency or drop frequency Definition Reciving or sending indoor unit data Reciving or sending indoor unit data Indoor unit data received or sent Dark Communication between mainboard and drive board is abnormal Compressor current limit frequency or drop frequnc IPM module overheat limit frequency or drop frequency D13 Definition 1 blink Quick refrigerating heating 2 blinks Defrosting 3 blinks Oil return Ablinks Nominal refrigerating heating 5blinks Max refrigerating heating 6blinks Medium refrigerating heating Tblinks Min refrigerating heating 8blinks Stop 9blinks Low pressure unrestorable D16 Definition Brig ht Receiving or sending computer da Dark Computer data received o
6. ES X E XT ar N gt BK ra ABU YE A X6 X FAN N LINGE BN d BN CDCITERNHACU ACNI ACN3 ACL TE U X101 BK lets FILTER BN X BU X127 X117 X105 gt lt 2 rrH n R R NAC 2 55 AC N1 BN 1 3b J AC LX105 X107 lt j AP3 Les nm 3 I 1 YEGN f CN3 EHI Hha EE CN API Lem Ne ACL pens PR N AP1 I L X103 1 ACN V YEGN MEM BN BU BU V I YEGN BU lys X112 AE 1 IN i AE GJ KEY 1 1 yt been HCOMP BASE id ovo Hove M T APA m 4 Il AC L2 HEAT STRAP 2 AC L1 4V CNI T PTC FUT HEAT LINE TRANSFORMER OUTTUBE OUTDOOR EXHAUST AC L1_FAN H FAN L SWING V 1 Y V MOTOR ge WH Ua a ye 12 He 2 1 1 RTA TRT3 Lo YEGN OUTTUBE OUTROOM _ EXHAUST AE TEM SENSOR TEM SENSOR TEM SENSOR E FAN MOTOR BN BROWN WH WHITE OG ORANGE YEGN YELLOW GREEN AE apri FILTER BUBLUE VTVIOLET 1 1 BK BLACK RD RED Manual of functions of remote controller and operation method Manual of functions of remote controller GAN A180 IV Controller Function of Indoor Unit 1 Temperature parameters Indoor setting temperature Tpreset Indoor ambient temperature Tamb 2 System basic f
7. OFFbutton In running process if the comprssor has runfor 7 min the times of overload protection will be cleared 2 Current dropped frequency or limited frequency control The controller will drop the compressor frequency or prohibit the compressor frequency rising according to the change of total current 3 5 Communication Malfunction There is communication malfunction if it can not receiving correct signal for 3 minutes continuously in which case the outdoor unit will stop 3 6 Module Protection When module is in protection the compressor will be stopped as the indoor room temperature meet the preset value after the compressor has stopped for 3 minutes it will resume its original operating status automatically If 6 successive times ofoverload protection happens the compressor won t resume running except pressing ON OFFbutton In running process if the comprssor has runfor 7 min the times of overload protection will be cleared 3 7 Overheat Protection of Module If it is detected the IPM temperature is too high the compressor will run in limited or dropped frequency If the IPM temperature goes on rising over the stated value the compressor will stop When the IPM temperature resumes normal and the compressor has stopped for 3 min the complete unit will resume running If successive times of IPM protection in an hourhappens the compressor won t resume running except pressing ON OFFbutton 3 8 OverloadProtection for compressor If
8. System malfunction i e overload protection When tube temperature Check the temperature of outdoor heat exchanger when cooling and check the temperature of indoor heat exchanger when heating is too high protection will be activated Possible reasons Outdoor temperature is too high when cooling insufficient outdoor air circulation refrigerant flow malfunction please refer to the malfunction analysis in the previous section for handling method 7 IPM module protection Processing method Once the module malfunction happens if it persists for a long time and can not be self canceled cut off the power and turn off the unit and then re energize the unit again after about 10 min After repeating the procedure for sever times if the malfunction still exists replace the module refer to the next page 8 PTC protection Possible reasons ambient temp is too high or PFC module is too heat the power orcurrent of complete unit is too high or PFC voltage is too low connecting wire of PFC control plate is in poor contact Processing method Once protection happens first check connecting wire of PFC control plate and if the unit is still abnormal with continuous protection replace PFC controller Module protection Handling method Check if the voltage between power module P and N is too low and if the current is too high In normal condition voltage between P and N should be about 320V Abnormal Normal heck power supply circuit
9. ambient temp displays Controller Function of Outdoor Unit 1 Temperature Parameters Outdoor exhaust temperature Texhaust Outdoor ambient temperature Tout amb 2 Basic Functions In each mode once started the compressor can not be stopped until it has been running for 6 min excluding malfunction protection and stopping the compressor for mode switching once stopped the compressor should be started in 3 min delay including mode switching stopping the unit for temp reached or by remote control the compressor will start after 5S of the indoor fan 2 1 Cooling Mode 2 1 1 Working Conditions and Process of Cooling if the compressor is in off status and Tin amb Tpreset 0 5 C start the unit in cooling mode in which case outdoor fan and compressor start running and microcomputer will auto adjust the frequency of compressor by cooling capacity requirements In cooling running if 0 C x Tpreset Tin amb lt 2 the compressor will run at low frequency e In cooling running if capacity requirements is O unit stop for cooling and Tpreset Tin amb gt 2 C compressor will stop and outdoor fan will stop running in 605 gt n this mode switch valve is de energized and the temp can be set in the range of 16 30 C 2 1 2 Antifreeze Protection In cooling or dehumidify mode if it is detected that the system is under antifreeze protection the compressor will stop or run with frequency decline and outdoor fan wi
10. compressor oveload is detected the indoor unit will stop as the indoor room temperature meet the preset value If the compressor has stopped for 3 min it should be reset to start 3 9 9 PFC Protection If start the unit in cooling heating and dehumidifying mode the compressor will operate in the frequency of 30Hz and then PFC occurs after 30s At any time of stopping compressor PFC will stop with the compressor at the same time Once PFC starts protection signal will be detected soon During PFC protection PFC stops with the compressor at the same time PFC will resume operation automatically after 3min when malfunction happens to it 6 3 3 10 Malfunction Detection of Temp Sensor and IPM Overheat Detection Sensor 1 In standby condition malfunction of outdoor tube temp ambient temp and IPM overheat detection sensor can not be detected 1 2 Malfunction of exhaust temp sensor and IPM overheat detection sensor can be detected after the compressor starts and has run for 3 min 3 Within 10 min when the compressor starts or after defrosting heating and oil return are completed malfunction of outdoor tube temp sensor can not be detected 4 Malfunction of other outdoor temp senors will be detected soon after the unit is started The detection will last 30s Once malfunction J3 Ou D11 1blink 2 blinks 3 blinks Ablinks 5blinks 6blinks Tblinks ablinks Oblinks Oblinks 1blinks 2blinks D14 1blink 2blinks 3bli
11. status the system will maintain its stop status It will be started until the time for auto start Atthe time for auto start every day the system will run under preset mode At the time for auto stop the system will be stopped Noise silencing is provided under heating mode If the unit is restarted in less than 3 minutes after it is stopped 3 minute lag protection is provided for the compressor 3 5 4 Change of Timer When the system is under TIMER ON OFF status switch on or off the unit by pressing ON OFF key by remote controller Timer can be reset The system will run under the last status setting 3 6 Sleep Function Setting SLEEP function under COOL or DEHUMIDIFY mode the preset temperature will automatically rise by 1 C after 1 hour and rise by another 1 C after 2 hours Preset temperature will rise by 2 C in total within 2 hours After that the unit will run at this preset temperature the indoor fan will run at preset speed Setting SLEEP function under HEAT mode the preset temperature will automatically decrease by 1 after 1hour and decrease by another 1 C after 2 hours Preset temperature will decrease by 2 C in total within 2 hours After that the unit will run at this preset temperature the indoor fan will run at preset speed No sleep function under fan mode and auto mode 3 7 Speed Control of Indoor Fan The indoor fan will select fan speed HIGH MED or LOW automatically according to the change of ambient temp It c
12. the 4 way valve will de energize after the compressor has stopped for 2 min In this mode the reversal valve is energized and temp setting range is 16 30 C 3 2 4 2 Logic Control of Outdoor Fan If Tout amb lt 19 C the outdoor fan will run at high speed If Toutamb 21 the outdoor fan will run at low speed In running process if 19 lt Tout am lt 21 C the speed will remain original During running the outdoor fan will be forced to run at high speed for 3min and then turn to logical speed 2 4 3 Defrosting Process If itis detected the defoeting is required and if the compressor running frequency is a little higher the frequency will first reduced to some level and then the compressor and indoor fan stop 50s later outdoor fan stops meanwhile 4 way valve stops after 45 second delay The compressor will restart with 90Hz of running frequency in 55s to defrost Upon defrsoting is completed compressor running frequency will decrease to and 4 way valve and outdoor fan will start 10s later compressor will run with increased frequency required by capacity Indoor fan will run in 2 min at most If compressor is stopped for malfunction in heating mode the indoor fan will run by blowing exhaust heat 3 Current Protection Function in Cooling Heating Dehumidifying Auto Mode 3 1 Overload pretection When Ttube is detected too high the compressor will run in limited or dropped frequency When Ttube goes on rising over the stat
13. to the change of ambient temp It can also be set by remote controller 3 8 Buzzer When the unitis energized pressed or receives a signal from remote controller the buzzer will give out a beep 3 9 Swing Control After energized guide louver will first anticlockwise turn to A position and then close the air outlet After the unit is turned on guide louver will return standby to max air outlet D2 for heating for cooling guide louver will first turn to air outlet D1 and then return standby to L1 If the unit is in swing condition the guide louver will swing between L1 and D1 for cooling and between L and D2 for heating After the unit is off guide louver will anticlockwise turn to A position to close air outlet T gt 3 10 Memory Function What can be memorized includes mode swing preset temperature preset fan speed If the system is in timer and sleeping status preset timer and sleeping can not be memorized and will be canceled after the power is off which must be reset 3 11 Indoor Indicators In normal state power supply mode fan speed preset temp indicator will display by current state Every time of receiving command from remote controller preset temp will display blink for 10s In other conditions ambient temp displays In normal state power supply mode fan speed preset temp indicator will display by current state Every time of receiving command rom remote controller preset temp will display blink for 10s In other conditions
14. 4 AAMA SS LA IN NW m Z 2 2 2 2 A 2 2 Components and Parts List of Outdoor Unit A180IV 6 Electric HeaterBand O 765100041 1 8 MotorSupport o 9 CondenserSupport 01798004 _ Oo C 6RVN93HOV 00103041 Band Com pressor 7651300401 The above data is subject to change without prior notice Exploded View of Outdoor Unit 111213141516 17 18 1920212225 24 2 26 77 28 o bol I ind Do Wane neers 7 ch q 7 K WS W AMO RAR AN MII 4 Components and Parts List of Outdoor Unit Part Code A220lIV 01473001 01433011 26235401 01233039 10335253 15013703 01703087 01103910 24213005 01255262 01475252 43120011 44020334 01403592 24213008 30111018 01403629 30039165 24213029 24213010 24213009 30039198 30039163 3900028001 42020063 42020066 33010027 76510021 42011043 42011242 43130008 71010102 70410523 71010003 76514004 49013011 03103397 07130209 26235253 43000411 4300040022 07103030 01305260 76515203 00103051 01203560 01305247 7 Motor Support Sub Assy Condenser Assy 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 Capacitor 28 Cable Cross Loop 29 30 Terminal Board 31 Filter 32 i 33 Iso
15. DRY FAN HEAT AUTO 3 TEMP Setting Button Each time V button is pressed the set temperature will be increased or decreased by 1 C Adjusting range is 16 30 C In AUTO mode this button does not function 3 4 Manual Button ON OFF If press AUTO button under off status of the unit the unit will run under auto mode with swing lf press AUTO button under on status of the unit the unit will be stopped If remote controller command is given the mian unit will run under the command AUTO Hee mW 4 S Um Q U J EN 3 5 Timer function Manual switch 3 5 1 Timer on The system will continue to run if TIMER ON is set when the system is under ON status If TIMER OFF is set when the system is under OFF status the system will start to run under preset mode upon the time for auto start 3 5 2 Timer off If TIMER OFF is setwhen the system is under OFF status the system will maintain its standby status upon the time for auto stop Ifthe TIMER OFF is set when the system is under ON status the system will be stopped upon the tome for auto stop 3 5 3 Set TIMER ON OFF Simultaneously If TIMER ON and TIMER OFF is set simultaneously when the system is under run status the system will maintain its current operating status and be stopped upon the coming of preset time If TIMER ON and TIMER OFF is set simultaneously when the system is under stop
16. IIIIIIIIIIIIIIII IIIIIAI IIIIIIIIIIIIIIII I lI 7772Z2ZZZZZ2ZZ2ZZZ2ZZZ2ZZZ7 ZZ ZZ Z 000 PME Overall and Installing Dimension of Indoor Unit 18K Wrench OVS 412 Unit mm MEM Overall and Installing Dimension of Indoor Unit 24K Electrical Diagram GAN GAG A180IV FAN MOTOR WARNING L1 DISPLAY WHEN THE UNIT IS RUNNING OR STOPED IN 2 BN E SENSOR Te SENSOR M1 _ MINUTES OR THE VO
17. LTAGE LESS THAN 30V BU YE j 1 BETWEEN P AND N OF IPM PLEASE DON T TOUCH _ ANY TERMINAL AVOIDING ELECTRICAL SHOCK HAZARD BN AC L1 AC N1 AC N3 AC L3 2 6 VEGN LAC pen lt lt ES X14 NaC lt lt ACN AP2 X FAN N BR X18 COM A XH 3 TUBE ROOM X101 X18 127 117 X105 FU1 BN BN l L Eu 2 4 AC L I BN FILTER BU AP1 1 l BU 3 Ww lt AC N So PY l E d A EM E l p d 4V s EARE SWING2 I ES Lh HEATER iL 7 X2 X2 HEAT2 X11 254 OVERLOAD I 1 TUBE ROOM EXHAUST imi PTC FUT UE X25 FAN H FAN L i 3X28 ELECTRCALBOX y ci V Y WR TRANSFORMER MICRO SWITCH X ME S ayy m s p 1 A SWING ELTE RT5 m MOTOR OUTTUBE OUTROOM EXHAUST YEGN EE B M TEM SENSOR TEM SENSOR TEM SENSOR x AP2 BN BROWN WH WHITE BK BLACK RDRED YEGN YELLOW GREEN ro INDOOR UNIT OUTDOOR UNIT Electrical Diagram GAN GAG A220IV rrr TUBE ROOM P d WHEN THE UNIT IS RUNNING OR STOPED IN 2 MINUTES BN DISPLAY TEM SENSOR TEM SENSOR 1 1 1 OR THE VOLTAGE LESS THAN 30V BETWEEN P N OG RELAY I OF IPMPLEASE DONT TOUCH ANY TERMINAL AVOIDING USE Ween 9 1 ELECTRICAL SHOCK HAZARD A NE RT2 RTI A XT2 eu Lys 4 i
18. alfunction of refrigerant flow Malfunction of four way valve Replace the four way valve Replace the capillary Partial blockage of capillary Use the method of observing condensation on the evaporator and pressure value of Blockage of cooling system high pressure manometer to see whether the system is blocked and carry out corresponding handling on the system I Ensure that both thick pipe and thin pipe are Insulated Poor thermal insulation of connecting nipe of indoor and outdoor unit well The exposed part of the connector and copper pipe D H O F e e must be insulated as well ef e o A Heat exchanger of outdoor unit m Clean the dust accumulated on the is blocked surface of the heat exchanger Air filters are blocked Clean the filter Fan speed is set too slow Set the fan speed to high or medium Air circulation need Replace the Fan speed turns low damaged dd m Replace the motor motor Improper installation location X Outdoor unit should be installed in a for outdoor unit place with well ventilation Outdoor temperature is too high Flashing or awning can be installed appropriately If the max cooling capacity cannot be ae replacement of the air conditioner 15 recommended Is insufficient Indoor sealability is inadequate too many Maintain a certain degree of indoor sealability Try not to people go
19. an also be set by remote controller 3 8 Buzzer When the unitis energized pressed or receives a signal from remote controller the buzzer will give out a beep 3 9 Swing Control After energized guide louver will first anticlockwise turn to A position and then close the air outlet After the unit is turned on guide louver will return standby to max air outlet D2 for heating for cooling guide 0 louver will first turn to air outlet D1 and then return standby to L1 If the unit is in swing condition the guide louver will swing between L1 and D1 for cooling and between L and D2 for heating J After the unit is off guide louver will anticlockwise turn to A position to close air outlet T gt 3 10 Memory Function What can be memorized includes mode swing preset temperature preset fan speed If the system is in timer and sleeping status preset timer and sleeping can not be memorized and will be canceled after the power is off which must be reset 3 11 Indoor Indicators In normal state power supply mode fan speed preset temp indicator will display by current state Every time of receiving commanq from remote controller preset temp will display blink for 10s In other conditions ambient temp displays Controller Function of Outdoor Unit 1 Temperature Parameters 1 1 Cooling Mode 1 1 1 Working Conditions and Process of Cooling If the compressor is in off status and Tin amb Tpreset gt 0 5 start the unit in cooling mod
20. ctric box to remove it Motor Support Motor Support Motor Wire Fixing screw Fig 7 20 Disassembie Four way Valve Only for cooling and heating unit Unscrew the fastening nut of the four way valve coil and remove the coil Wrap the four way valve with Four way wet cotton and unsolder the 4 weld spots connecting Valve the four way valve to take it out Welding process should be as quick as possible and keep wrapping cotton wet all the time Be sure not to burn out the lead out wire of compressor Fig 7 21 Operating Procedures Photos Disassemble Capillary Unsolder the four welding points connecting the two capillary sub asslies with the liquid valve and the condenser and remove the capillary sub assy As show in Fig 7 22 Disassemble Gas Valve and Liquid Valve Liquid Valve Unscrew the four bolts fixing the two valves unsolder the welding point connecting the gas valve with the return air pipe and remove the gas valve Gas Valve caution when unsoldering the soldering point wrap the gas valve completely with wet cloth so as to prevent the valve body from harmed by high temperature Unscrew the four bolts fixging the liquid valve and remove the liquid valve refer to Figure 7 23 Disassemble Compressor Unscrew the six nuts with washers at the feet of the COMPressor two compressors caution only after discharging all freon Unsolder the suction a
21. e exhaust temperature goes on rising over the stated value the compressor will stop and itis detected that the exhaust temperature has resumed normal the compressor will resume running according to capacity requirements If 6 successive times ofoverload protection happens the compressor won t resume running except pressing ON OFFbutton In running process if the comprssor has runfor 7 min the times of overload protection will be cleared 2 4 Current Protection Function 2 4 1 Overload protection Once detected the whole unit current exeed the limit value 14 OA that indoor temp arrived the unit will stop to run the compressor stopped 3mins will automatically resume to running status protection times exceeds 6 times If compressor running time exceeds 7 mins that the protection times will be cleared to 0 the system will be turned off and send the over current protection malfunction signal to indoor unit cannot automatically resume to run it must be press ON OFF to turn off the unit 2 4 2 Current drop frequency limit frequency control When detected the whole unit current 212 forbidden frequency rise When detected the whole unit current 13 and f max running frequency compressor drop frequency 2 5Communication malfunction When continuously 3mins without receive from indoor or 10s cannot receive signal from drive board that is communication malfunction outdoor unit will stop 2 6 Module protection Module protec
22. e in which case outdoor fan and compressor start running and microcomputer will auto adjust the frequency of compressor by cooling capacity requirements In cooling running if 0 C lt Tpreset Tin amb lt 2 C compressor will run at low frequency In cooling running if capacity requirements is O unit stop for cooling and Tpreset Tin amb gt 2 C the compressor will stop and outdoor fan will stop running in 60S gt n this mode switch valve is de energized and the temp can be set in the range of 16 30 1 1 2 Antifreeze Protection In cooling or dehumidify mode if it is detected that the system is under antifreeze protection the compressor will stop or run with frequency decline and outdoor fan will bestopped in 60S When antifreeze protection is releasedthe unit will resume its original operating status 1 2 Dehumidifying Mode 1 2 1 Working Conditions and Process of Dehumidifying Same with Cooling Mode n this mode switch valve is de energized and the temp can be set in the range of 16 30 C 1 2 2 Protection is same with Cooling mode 1 3 Fan Mode Compressor outdoor fan and 4 way valve shut off gt Temp setting range 16 30 C 1 4 Heating Mode 1 4 1 Working Conditions and Process of Heating If Tamb 3 CxTpreset 0 5 the unit will start heating in which case compressor outdoor fan and 4 way will run If Tamb 3 CxTpreset 2 C the compressor will run at 30Hz If Tamb 3 C Tpreset 2 C the c
23. ed value the compressor will stop If Ttube resumes normal so does the complete unit according to capacity requirements If 6 successive times ofoverload protection happens the compressor won t resume running except pressing ON OFFbutton In running process if the comprssor has runfor 7 min the times of overload protection will be cleared 3 2 Delay pretection for compressor Once be stopped the compressor can not be restarted within 3mins 3 3 Exhaust Temperature Pretection If itis detected by the outdoor controller that the exhaust temperature is too high the compressor will run in limited or dropped frequency If the exhaust temperature goes on rising over the stated value the compressor will stop and it is detected that the exhaust temperature has resumed normal the compressor will resume running according to capacity requirements If 6 successive times ofoverload protection happens the compressor won t resume running except pressing ON OFFbutton In running process if the comprssor has runfor 7 min the times of overload protection will be cleared 3 4 Current Protection Function 1 Overload protection If total current is detected over the stated value the unit will be stopped as the indoor room temperature meet the preset value after the compressor has stopped for 3 minutes it will resume its original operating status automatically If 6 successive times ofoverload protection happens the compressor won t resume running except pressing ON
24. essor 11Blinks overload protection NEN Unit stop for compressor 12Blinks low pressure protection EN Unit stop for DC generatrix 13Blinks over current protection 15Blinks DC power supply short circuit 0106 Green Definition D108 Green 2Blinks Overcurrent protection 2Blinks Outdoor tube sensor malfunction a equen 3Blinks 3Blinks Outdoor air exhaust sensor malfunction SPOT limit frequenc Air exhaust protection 2 um 1Blink 1Blink 1Blink Received verified correct indoor data Pr Malfunction with drive board 5Blinks 5Blinks cannot receive correct data from drive board 10s 6Blinks 6Blinks 7Blinks 7Blinks Meaning of lights blinks for drive board LED1 Red LED2 Green ET Definition Drive Definition Communication malfunction Dark Normal reset unit stop Bright no data receiving by10s 1Blink Sd bis normally Blink Communication normal 2Blinks Unit stop for abnormal 3Blinks IPM protection IPM 4Blinks Demagnetization protection 5Blinks PFC protection PFC Continuously 5times 6Blinks startup failure 7Blinks Startup failure 8Blinks Lack voltage 9Blinks Over voltage 10Blinks IPM overheat protection Q Controller Function Manual PME Remote Controller Function Manual Applicable to GWIDZABCNK3A1A Controller Function of Indoor Unit 1 Temperature Parameters Indoor preset temperature T preset
25. g the front side plate to remove it As show in Fig 7 13 Screws Front Side Plate Fig 7 13 Disassemble Top Cover Unscrew the screws fixing the top cover and then lift the top cover to remove it As show in Fig 7 14 Screws Disassemble Rear Grill Unscrew the screws fixing rear grill and rear side Screws plate After removing rear grill disassemble rear side panel sub assy As show in Fig 7 15 Fig 7 15 Operating Procedures Photos ERA Disassemble Cabinet Unscrew the screws fixing the cabinet to remove it Disassemble the electric box Screw off 4pcs screw which fix the electric box then can take off the electric box cover Screw off 5pcs screw from electric box pull Electric out the wire terminal of electric box then lift Box it up can take off it 7 2 6 Disassemble the rear side plate screw off 8pcs screw which fixed the rear side plate then can disassemble the rear side plate Screw Operating Procedures Photos Disassemble Axial Flow Fan Unscrew the nut fixing the fan with a spanner to take out the fan Axial Flow Fan Nut Disassemble Outdoor Motor Unscrew the screws fixing the motor support and M Motor Fixing Screw then lift it upwards to remove it Unscrew the screws fixing the motor and pull out the connection line between I Motor it and ele
26. in and out frequently there is use appliance with high amount of heat heating unit in the room Check the circuit according to circuit diagram Abnormal power supply of outdoor unit Damage of outdoor main control board 2 Replace the main control board AP2 When unit is cooling or heating both compressor and outdoor fan don t run Breakage of outdoor power module AP4 Replace the power module AP4 Improper setting of temperature Adjust the set temperature Breakage of outdoor fan motor Replace the fan motor When unit is cooling or heating the Wrong wire connection Wire according to the circuit diagram compressor runs but outdoor fan doesn t run Breakage of outdoor main control board AP2 Replace the main control board AP2 Breakage of outdoor fan capacitor C1 Replace the fan capacitor C1 Malfunction of compressor Replace the compressor Re fasten the connection When cooling or Poor contact of connection between the heating outdoor main control board AP2 and module AP3 fan runs but compressor doesn t run Abnormal input P N of power module AP4 Check if input is 320V If not replace the rectifier Abnormal output of power module AP4 Replace the power module AP4 Compressor temperature is too high Cool the compressor for 30 min before running When cooling or heating outdoor fan runs but compressor doesn t run Wrong wiring Wire according to the circuit diagram Damage of o
27. lation Washer 34 i 35 Cable Cross Loop 36 Radiator 37 Capillary Sub Assy 38 Cut off Valve 39 40 Rear Grill Relay VC15 3A1B Electric Box Assy Module Support PCB JGPO1 1 Electric Box Cover Sub Assy Main PCB 2 W9W2 PCB Support up PCB Support down PCB Support Main PCB 1 W9W2C Filtering Board W9W2 Temperature Sensor Sensor Insert Sensor Insert Terminal Board 42 Gas Valve Sub Assy 43 Rear Side Plate 44 Cable Cross Loop 46 47 D sla o lt lt O o een p eet Miso lt lt o ad o o r 5 9 5 ala lt 1 BS o Sale o D D o n n gt gt Q Dig E s O lt c o O 3 c 4 2 32003001 Band Com pressor 49 06813401 O U Electric Heater Band 765100041 Metal Base E Tx EE Ts pl ER The above data is subject to change without prior notice 38 Improper setting of temperature Adjust the set temperature Whether cooling heating load Check the estimated load of cooling heating is nroner Vacuumize after leakage detection Leakage or shortage of refrigerant and leakage repair Charge refrigerant according to specification Leakage occurs between high and Replace the compressor low pressure inside compressor M
28. ll bestopped in 60S When antifreeze protection is releasedthe unit will resume its original operating status 2 1 3 Control Logic of Outdoor Fan If Tout amb 26 C outdoor fan will run at high speed If Tout amp lt 24 C outdoor fan will run at low speed In running if 24 lt Toutamb lt 26 outdoor fan will remain original After turning on the unit the outdoor fan will be forced to run for 3 min and then run at logical speed 3 2 2 Dehumidifying Mode Working conditions and Process of dehumidifying the same as that in cooling mode State of 4 way valve shut off Temp setting range 16 30 Protection function the same as that in cooling mode 3 2 3 Fan Mode Compressor outdoor fan and 4 way valve shut off e Temp setting range 16 30 C 3 2 4 Heating Mode 3 2 4 1 Working Conditions and Process of Heating If the compressor is in stopped state Tamb 3 C 0 5 the unit will start heating in which casg compressor outdoor fan and 4 way valve will run and the microcomputer will adjust frequency of comprssor according to heating requirements In heating process if lt Tamb 73 C lt CTpreset 2 compressor will run at low frequency In heating process if Tamb 3 Tpresett 2 the compressor will stop running and outdoor fan will stop running after 60 S delay Note Stop the unit or switch into other mode in heating mode
29. n the remote controller to select and display the following modes AUTO COOL DRY FAN HEAT AUTO 3 3 TEMP Setting Button Each time A V button is pressed the set temperature will be increased or decreased by 1 C Adjusting range is 16 30 C In AUTO mode this button does not function 3 4 Manual Button ON OFF If press AUTO button under off status of the unit the unit will run under auto mode with swing lIf press AUTO button under on status of the unit the unit will be stopped If remote controller command is given the mian unit will run under the command 3 5 TIMER ON OFF 3 5 1 TIMER ON Manual switch The system will continue to run if TIMER ON is set when the system is under ON status If TIMER OFF is set when the system is under OFF status the system will start to run under preset mode upon the time for auto start 3 5 2 TIMER OFF If TIMER OFF is set when the system is under OFF status the system will maintain its standby status upon the time for auto stop Ifthe TIMER OFF is set when the system is under ON status the system will be stopped upon the tome for auto stop 3 5 3 Set TIMER ON OFF Simultaneously If TIMER ON and TIMER OFF is set simultaneously when the system is under run status the system will maintain its current operating status and be stopped upon the coming of preset time If TIMER ON and TIMER OFF is set simultane
30. ncy happens the slow rise limit will be canceled When whole unit running drop frequency arrives the lowest frequency and DC generatrix 13A when arrive at the temperature point unti will stop and displays the generatrix over current protection malfunction compressor has stopped 3mins will automatically resume to running status 2 If compressor frequency rise and deteced any phase current 12A that the compressor frequency rise up to the target frequency running 2 9 Module over heat protection function If detected the module surface temp 110 C the whole unit will accord to IPM module protection process 3 Outdoor indicators display status The meaning of lights blinks for mainbaord D101 Green mE IL Blink Unit stop for Over current protection 2Blinks compressor high 2Blinks 2Blinks drop frequency pressure protection Uni 0 Tor Heating anti high temp drop ABlinks malfucntion including indoor ABlinks ABlinks frequency unit and drive board Sinks urt sop tor modue reion SBinks Sinks Unit stop for Communication malfunction signal Defrostin TBlinks Unit stop for refrigerant overload 7Blinks 7Blinks Anti freezing protection drop frequency Unit stop for heating DC generatrix over current protection 8Blinks anti high temp aBlinks 8Blinks drop frequency Unit stop for refrigeran 9Blinks anti freezing Unit stop for 10Blinks Temp sensor malfunction Unit stop for compr
31. nd the discharge pipes of the compressor carefully remove the pipes and take out the compressor refer to Figure 7 24 Fig 7 24 Exploded View and Components and Parts List 8 1 Exploded View of Indoor Unit lec E 724 de V 2 LY L 2 A ILL 2 Lf 4 LAY DO Components and Parts List of Indoor Unit um Part Code 6 Fontasse Waermay 200800 3 9 jGudelower up f O 35 Powerco mme 1 O The above data is subject to change without prior notice SS Exploded View of Indoor Unit Y E ed Z Z NE EE Components and Parts List of Indoor Unit T Part Code 6 FonCase 2000205009 Watertay gt 9 Gudelower cup _ 1058208 35 PowerCod 9O The above data is subject to change without prior notice mem Exploded View of Outdoor Unit 15 17 16 15 EA CI j 34 35 X 37 41 M0 N39 N38 50 47 46
32. nks Ablinks 5blinks 6blinks 7blinks 8blinks D17 1blink 2blinks 3blinks Ablinks 5blinks 6blinks fblinks 8blinks Definition Compressor running Stop for exhaust protection Stop for NEC drive module protection Stop for overcurrent protection Stop for overload Stop for refrigerating antifreeze Stop for sensor fault Stop for communication fault including indoor unit and NEC drive module Stop for compressor high voltage protection Stop for compressor l w voltage protection Preserved Cassette unit stop for water flow eserved Stop for IPM overheat protection Definition Air exhaust protection drop frequency Overcurrent protection drop frequency Refrigerant overcurrent drop frequency Heating overcurrent drop frequency Anti freezing drop frequency Stop for reduction of frequency to lowest Stop for PFC protection Stop for compressor overload Definition NEC drive information DC input voltage too low DC voltage too high AC current protection IPM abnormal In built PFC protection Startup failure Phase failure or modulation failure Firstly PFC protection then module protection 2 1blink 2 blinks 3 blinks 4blinks 5blinks 6blinks 7blinks 8blinks Oblinks 10blinks 11 blinks 12blinks D15 1blink 2blinks 3blinks Ablinks 5blinks 6blinks 7blinks 8blinks Oblinks p oc When computer monitoring port is not short circuited When computer monitoring port is short
33. of outdoor unit f PTC resistance rectifying bridge reactor capacitance etc is ok Check if radiating paste 1s spread Reinstall power module and Temperature of power module is too high evenly or radiating sticker is stuck re spread radiating paste or which causes overheating protection well if screws of power module stick radiating sticker on the is tightened radiator of power module Protection is still displayed radiation heat exchanger is dir Confirm the setting status of outdoor unit cooling Normal Confirm if outdoor fan motor is running unplug the three connecting wires between U W of compressor Outdoor fan runs Confirm if there is voltage output and balance of and power module Turn on the unit to see if outdoor fan runs normally about 1 minute Outdoor fan stops e p Measure the voltage of outdoor Whether module type fan connector Ktore Replace the power module Abnormal Normal Replace the module Measure the three phase with correct type resistance of compressor Normal qq Whether cylinder of Replace the compressor is stuck compressor If the unit runs normally after connected voltage between any two phases of U V and W Normal voltage Replace the fan motor Replacethe mainboard of outdoor unit with the new compressor for trial run the cylinder of original compressor is stuck
34. ompressor will stop running and outdoor fan will stop running after 1min delay Stop the unit or switch into other modes in heating mode the 4 way valve will de energize after the compressor has stopped for 2min gt In this mode the Temp setting range should be 16 30 C 1 4 2 Defrosting Process Outdoor microcomputer system will accord to the frost on evaporator outdoor tube temp sensor to judge whether it enters defrosting process If satisfied the defrosting process compressor will stop 4 way valve reversal Compressor runs at high frequency running indoor fan will run by blowing exhaust heat 2 Current Protection Function in Cooling Heating Dehumidifying Mode 2 1 Overload pretection When Ttube is detected too high the compressor will run in limited or dropped frequency When Ttube goes on rising over the stated value the compressor will stop If Ttube resumes normal so does the complete unit according to capacity requirements If 6 successive times ofoverload protection happens the compressor won t resume running except pressing ON OFFbutton In running process if the comprssor has runfor 7 min the times of overload protection will be cleared 2 2 Delay pretection for compressor Once be stopped the compressor can not be restarted within 3mins 2 3 Exhaust Temperature Protection If itis detected by the outdoor controller that the exhaust temperature is too high the compressor will run in limited or dropped frequency If th
35. ously when the system is under stop status the system will maintain its stop status It will be started until the time for auto start Atthe time for auto start every day the system will run under preset mode At the time for auto stop the system will be stopped Noise silencing is provided under heating mode If the unit is restarted in less than 3 minutes after it is stopped 3 minute lag protection is provided for the compressor 3 5 4 Change of Timer When the system is under TIMER ON OFF status switch on or off the unit by pressing ON OFF key by remote controller Timer can be reset The system will run under the last status setting 3 6 Sleep Function Setting SLEEP function under COOL or DEHUMIDIFY mode the preset temperature will automatically rise by 1 C after 1 hour and rise by another 1 C after 2 hours Preset temperature will rise by 2 C in total within 2 hours After that the unit will run at this preset temperature the indoor fan will run at preset speed Setting SLEEP function under HEAT mode the preset temperature will automatically decrease by 1 C after 1hour and decrease by another 1 C after 2 hours Preset temperature will decrease by 2 C in total within 2 hours After that the unit will run at this preset temperature the indoor fan will run at preset speed No sleep function under fan mode and auto mode 3 7 Speed Control of Indoor Fan The indoor fan will select fan speed HIGH MED or LOW automatically according
36. ove the nut spring washer and flat washer and thenremove the axial flow fan with force Axial Flow Fan 9 Disassemble Outdoor Motor Screw off the four tapping screws fixing the motor pull out the motor lead out cable plug and remove the motor Screw off the two tapping screws fixing the motor support and pull the motor support upwards to remove it Screw Operating Procedures Photos 10 Disassemble 4 Way Valve Only for cooling and heating unit Screw off the holding nut of the 4 way valve coil and remove the coil Use wet cotton cloth to wrap the 4 way valve unsold the four soldering points connecting the 4 way valve and remove the 4 way valve Be quick during the unsoldering process pay attention to keep the wrapping cloth wet and do not allow the soldering flame to burn the compressor lead out cable caution only after discharging all freon Four way valve 11 Disassemble Capillary Sub assembly Unsolder the soldering points connecting the capillary sub assy and the other pipelines and remove the capillary sub assy Capillary Sub assy 12 Disassemble Compressor Firstly unsolder the pipes connecting the compressor and then unscrew the three foot nuts at the compressor soldered dots to remove the compressor Nut with washer Disassembly Procedure of Outdoor Unit Operating Procedures Photos Disassemble Front Side Plate Unscrew the screws fixin
37. r sent of IPM overheat detection sensor or other outdoor temp sensors is detected theunit will be stopped soon e Disassembly and Assembly Procedures Disassembly Process of Indoor Unit Operating Procedures Photos 1 Disassemble the Front panel Open the front panel Firstly to screw off the screws that fixed at the guard plate on the receiving window both sides disassemble the guard plate then to remove the wiring terminal then along the groove that fix the front panel to take out the front panel 2 Disassembling the filter and wire pressed clamp Disassemble the filter screw off the screw that fix the wire pressed clamp can disassemble it 3 Disassemble air guide louver Bend the air guide louver by hands and then loose the slipknot on the guide louver to disassemble the guide louver Front panel Air guide louver Wire terminal Operation procedures pictures Disassemble Front Case Open the three screw covers and unscrew five screws on front case Pull open the clasp at the front and rear sides can remove the front panel 5 Disassemble the electric box cover Loosen the 3 slipknots manually and then pull upwards the electric box cover 6 Dissasemble water tray sub assy Unscrew the screws fixing the water tray and then loosen the slipknot in the other end Pull out the terminal of stepping motor and then pull upwards Slipknot the water tray to take it ou
38. should be coated with the coolant Analysis or processing of some of the malfunction display 1 Compressor discharge protection Possible reasons shortage of refrigerant blockage of air filter poor ventilation or air flow short pass for condenser the system has noncondensing gas such as air water etc blockage of capillary assy including filter leakage inside four way valve causes incorrect operation malfunction of compressor malfunction of protection relay malfunction of discharge sensor outdoor temperature too high Processing method refer to the malfunction analysis in the above section 2 Low voltage overcurrent protection Possible reason Sudden drop of supply voltage 3 Communication malfunction Processing method Check if communication signal cable is connected reliably 4 Sensor open or short circuit Processing method Check whether sensor is normal connected with the corresponding position on the controller and if damage of lead wire is found 5 Compressor overload protection Possible reasons insufficient or too much refrigerant blockage of capillary and increase of suction temp improper running of compressor burning in or stuck of bearing damage of discharge valve malfunction of protector Processing method adjust refrigerant amount replace the capillary replace the compressor use universal meter to check if the contactor of compressor is fine when it is not overheated if not replace the protector 6
39. t Water tray Terminal 7 Disassemble Electric box Tube sensor unplug the plugging connector of the indoor motor at the electric box use screwdriver to unscrew the screw fixing Clasp the electric box and remove the electric box Plugging connector lt ES a di e E Ly Ac T vay 8 Disassemble Evaporator Use a screwdriver to loosen the screw 1pc of left side 2pcs of right side Take out the evaporator with your hands so that the side plate clamp of evaporator falls out from the groove Remove the evaporator with care Take care to protect the connecting pipe 9 Disassemble Motor Use a screwdriver to loosen the 3 screws fixing the motor clamp Remove the motor clamp Unscrew the tighten nut which fix cross flow fan then Screws can take out the motor from the cross flow fan Motor right clamp 10 Disassemble cross flow fan Take out motor then remove the cross flow fan from the left bearing holder Refer to Fig 7 27 Cross flow fan Procedures for Outdoor Unit Operating Procedures Photos of outdoor unit 1 Disassemble Top Cover Top cover Screws 2 Screw off the screws which fix the top cover then lift it up can take off the top cover Disassemble the handle Screw off one screw which fix the handle then adown to push the handle then can take off the handle Handle Screw Disassemble the rear side plate sub assy
40. tion compressor stop the unit will stop when indoor temp arrive at setting temp after compressor has stopped 3mins later it will resume to running status if continuously 6 times module protection the compressor cannot resume to run It is need to press ON OFF can resume If compressor running time exceeds 7min that the protection time will be clear to 0 2 7 Demagnetization current protection The peak value for demagnetization current is 41A when deteced this value is more than regulated value whole unit will drop frequency after drop frequency if detected the value still more than regulated value the compressor will stop to run After drop frequency if the value is less than the regulated value it will resume to the target frequency point And resume to the target frequency point procedure detect demagnetization current peak value is more than regulated value then execute the drop frequency order 2 8 Compressor phase current protection During compressor running detected the compressor s phase current and according to the following logic for control 1 If detected DC generatrix current 13A compressor drop frequency running indicator displays DC generatrix overcurrent protection drop frequency then detected DC generatrix current lt 12A and target frequency more than the running frequency the compressor s frequency rise up to target frequency running if target frequency is less than frequency or there is any other freque
41. unction 2 1 Cooling mode In this mode the indoor fan will run at preset fan speed When the compressor stops for outdoor unit malfunction protection the indoor fan will still run at preset fan speed gt Temp can be set in the range of 16 30 2 2 Dehumidifying mode Indoor fan will run at low speed invariably Swing will operate according to setting status gt Temp can be set in the range of 16 30 2 3 Fan mode Indoor fan and swing will operate according to setting status gt Temp can be set the range of 16 30 C 2 4Heat mode In heating mode if compressor is running indoor fan will delay to run to avoid cold air blowing When compressor stops blowing When compressor stops blowing residual heating will enter Blowing residual heat In heating mode the unit is stopped by remote controller indoor fan will continue to run for 60s Fan Speed can not be switched during blowing residual heat gt Temp be set in the range of 16 30 2 5 Auto mode In this mode the system selects COOL HEAT and FAN mode automatically according to the change of ambient temperature Protection function is the same as that in cooling and heating mode 3 Other control 1 Each time the On Off button of the remote controller is pressed the On Off state will switch once 3 2 Modes selection Press the MODE button on the remote controller to select and display the following modes AUTO COOL
42. utdoor main control board AP2 Replace the outdoor main control board AP2 Burn out or broken wire of indoor fan motor Fan doesn t run when FAN mode Wrong wiring is set Circuit break or damage of fan motor capacitor Repair or change the fan motor Wire according to the circuit diagram Replace the indoor main control board PCB Drainage pipe blocked or broken Abnormal sound Change drainage pipe W f refri t pipe joint i t close rap i refrigerant pipe joint is not c Renap enough Fan of indoor unit contacts other parts Water leakage Adjust fan location Foreign object in indoor unit Take out the foreign object Compressor shakes too much Adjust support washer of compressor and tighten loosen screws Touch of pipeline of outdoor unit Separate the touching pipeline and shake Touch of inner plates 1 Tighten connect screw 2 Stick absorbing clay between plates Louver of outdoor unit touched outer I Adjust location of louver Abnormal sound inside compressor Change compressor O o D Abnormal solenoid sound from 4 way Circuit short inside solenoid of the valve and change the solenoid valve valve when heating Note 1 When maintaining before detecting the voltage between the modular PN is less than 50V please never touch any of the terminals in order to avoid electric shock 2 When replacing the batteries commutating bridge both of them
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