SERVICE MANUAL
Contents
1. Indoor unit outline Installation plate Ka 150 143 w no 120mm or EET more to wall ID 120mm or more to wall Right rear side refrigerant pipe hole d 65 Left rear side refrigerant __ pipe hole 65 3 2 Outdoor Unit Loop the connective Model D B e F MSX 09HRDN1 QC2 A 670 265 540 481 276 50 MSX 07HRFN1 QE4 B MSX 09HRFN1 QEO B 760 285 590 530 290 63 MSX 12HRFN1 QD2 B 4 Refrigerant Cycle Diagram INDOOR UNIT OUTDOOR UNIT CHECK VALVE Heating Model only CAPILLARY TUBE LIQUID SIDE 2 WAY VALVE HEAT EXCHANGE EXCHANGE EVAPORATOR CONDENSER REVERSING VALVE Heating Model Only COOLING HEATING COMPRESSOR 11 5 Wiring Diagram 5 1 Indoor Unit MSX 07HRFN1 QE4 B MSX 09HRFN1 QE0 B MSX 12HRFN1 QD2 B 1 OPTIONAL INDOOR WIRING DIAGRAM LL PIPE TEMP SENSOR 1 BROWN La 1 eet ROOM TEMP SENSOR Y G 2 BLUE 5 10 dq POWER SUPPLY BLACK SWING MOTOR YELLOW RED a YG MEE a I I v M 1 di S 4 OPTIONAL I I JPLASMA I I I INDOOR FAN MOTOR 1 MICRO SWITCH Notes This symbol indicates the element is optional the actual shape shall be prevail L N 5 OUTDOOR UNIT 12 MSX 09HRDN1 QC2 A INDOOR WIRING DIAGRAM Ga I2. Independent dehumidification The function is usually used in rainy days in springtime or damp areas Air flow Direction The louver can be set at the desired position or swing up and down automatically Auto mode Temp Compensation Golden fin Optional lonizer Plasma optional Sleep mode auto control Self diag function Anti cold function Prevent the cold wind at the beginning of unit start Auto defrost Auto restar Flexible wiring connection Outdoor unit Power relay control Low noise air flow system Hydrophilic aluminum fin The hydrophilic fin can improve the heating efficiency at operation mode 4 way valve control It is only operated in the heating operation mode except defrosting operation Anti rust cabinet Made from electrolytic zinc steel sheet and anti rust coated components Valve protection It protects the valves and prevents water from dripping Compressor crank case heater Driving heating at 15 C 3 Dimension 3 1 Indoor Unit MSICOTARFNI QEAE 850 225 MSX OOHRFN1 OEO B 305 MSX 09HRDN1 QC2 A 710 194 250 MSX 12HRFN1 QD2 B 850 225 305 1 150mm or more to ceiling Indoor unit outline C 120mm or 120mm or more to wall more to wall gt c Left rear side Right rear side refrigerant ref gerant pipe hole 65 N pipe hole 65 ModelA A 710 B 250 C 100 D 162 Model B A 790 B 265 C 100 D 182 190mm or more to ceiling
3. 7 the compressor frequency will not be limited 8 4 3 Auto mode This mode can be chosen with remote controller and the setting temperature can be changed between 17 30 In auto mode the machine will choose the running mode according to AT AT T1 Ts AT T1 Ts Running mode Cooling Fan only Indoor fan will run at auto fan of the relevant mode The louver operate same as in relevant mode If the setting temperature is modified the machine will rechoose running function 8 4 4 Drying mode 8 4 4 1 Indoor fan speed is fixed at breeze and can t be changed The louver angle is the same as cooling mode 8 4 4 2 Compressor running rules 30 4 015 es 2 P 20 1 5 ex Ws 1 0 05 1 0 0 1 8 4 4 3 Overlow room temperature protection In drying mode if room temperature is lower than 10 the compressor will stop and not resume until room temperature exceeds 12 8444 Evaporator anti freezing protection condenser high temperature protection and outdoor unit frequency limit are active and the same as that in cooling mode 8 4 4 5 The outdoor fan operates the same as in cooling mode 8 4 5 Forced operation function 8 4 5 1Enter forced operation function When the machine is off pressing the touch button will carry the machine to forced auto mode after this if pressing the button once again within 5 seconds the machine will turn into forced cooling mode In forced auto f
4. Alet ie T 22 6 9 GaschardiNg 22 7 EMT 23 f Operation characteristics uuu e ee se eva a oe tcc Ke bees Da q HR Ee todo use Pe ke ee DEE RE 24 8 Electronic f nctllon EE ceca tec en wa a ee Er ee OE ee N Ge Ee 25 Nee Ee ET OR EE OE 25 8 2 Display function e Ee edic ee eR e Peu Eg 25 9 3 MalniProtectlonics siia ibunt temet i C un Ge S 26 8 4 Operation Modes and Functions ese ee ee ee ee ee ee GRA Re ee ee ee nennen nnne nennen ee ee ee 27 9 Troubleshooting ul y EG Ee Re EG EE Ge ete Ge de DEE De GE oe we ede EE GE be Ee De ee GE be ee 34 9 1 Indoor Unit Error Display mmm mm ee ad aa Va aga 34 9 2 Diagnosis ese Vie ARE N RE EE N aina EE EI 35 1 Precaution 1 1 Safety Precaution B To prevent injury to the user or other people and property damage the following instructions must be followed m q Incorrect operation due to ignoring instruction will cause harm or damage m Before service unit be sure to read this service manual at first 1 2 Warning Installation B Do not use a defective or underrated circuit breaker Use this appliance on a dedicated circuit There is risk of fire or electric shock m For electrical work contact the dealer seller a qualified electrician an Authorized service center Do not disassemble or repair the product there is risk of fire or electric shock m Always ground the product There
5. CLEAN AIR button on the remote controller When the unit is turned on press the CLEAN AIR button to activate the function Press it 32 again to stop the function During the time when lonizer is controlled by remote controller lonizer will be turned off automatically if indoor fan stops running due to malfunctions or anti cold wind When indoor fan restarts after malfunctions being eliminated and anti cold wind being released lonizer will be available again 33 9 Troubleshooting 9 1 Indoor Unit Error Display Display LED STATUS EEPROM parameter error Indoor outdoor units communication protection Zero crossing signal error Indoor fan speed out of control Open or short circuit of outdoor temperature sensor Open or short circuit of room or evaporator temperature sensor Outdoor fan speed out of control IBM malfunction or IGBT over strong current protection Over voltage or too low voltage protection Temperature protection of compressor top Inverter compressor drive error Note E4 amp P3 Reserved function 34 9 2 Diagnosis and Solution 9 2 1 EEPROM parameter error diagnosis and solution Shut off the power supply and turn on it 5s later Replace indoor PCB The problem comes out again No Is the EEPROM chip plugged in indoor PCB well Correct the connection Replace the main PCB of indoor unit 35 9 2 2 Indoor outdoor units communication prote
6. is risk of fire or electric shock B Install the panel and the cover of control box securely There is risk of fire of electric shock m Always install a dedicated circuit and breaker Improper wiring or installation may cause fore or electric shock m Use the correctly rated breaker of fuse There is risk of fire or electric shock m Do not modify or extend the power cable There is risk of fire or electric shock m Do not install remove or reinstall the unit by yourself customer There is risk of fire electric shock explosion or injury B Be caution when unpacking and installing the product Sharp edges could cause injury be especially careful of the case edges and the fins on the 1 condenser and evaporator m For installation always contact the dealer or an Authorized service center There is risk of fire electric shock explosion or injury B Donotinstall the product on a defective installation stand It may cause injury accident or damage to the product B Besurethe installation area does not deteriorate with age If the base collapses the air conditioner could fall with it causing property damage product failure and personal injury m Do not let the air conditioner run for a long time when the humidity is very high and a door or a window is left open Moisture may condense and wet or damage furniture m Take care to ensure that power cable could not be pulled out or damaged during operation There
7. model only EP Displayed when the air conditioner starts defrosting automatically or when the warm air control feature is activated in heating operation L TIMER display Displayed during Timer operation CLEAN AIR display optional Displayed when lonizer or Plasma dust collector depending on models is activated 1 07 TURBO operation display Displayed when select TURBO function on cooling operation or on heating operation DIGITAL DISPLAY Displays the current setting temperature or malfunction code when the air conditioner is in operation When SELF CLEAN feature is activated it displays SC FAN SPEED display Displayed the selected fan speed LOW MED POS and HiGH EP Operation Freguency display This display is separated into five zones The zones illuminate based on the compressor current frequency For example higher frequency will illuminate more zones 25 8 3 Main Protection 8 3 1 Three Minutes Delay at restart for compressor 1 minute delay for the 1 time start up and 3 minutes delay for others 8 3 2 Temperature protection of compressor top Top temp protector cut off for 30s and restart the compressor with 3 minutes delay 8 3 3 Temperature protection of compressor discharge When the compressor discharge temp is getting higher the running frequency will be limited as below rules Compressor discharge temp T5 gt 115 for 5s compres
8. of minutes 5 Afterthe evacuation is complete fully close the handle Lo valve of the manifold valve and stop the operation of the vacuum pump Make evacuation for 15 minutes or more and check the compound meter indicates 76cmHg 6 Turn the stem of the Hi valve about 45 counterclockwise for 6 or 7seconds after the gas coming out then tighten the flare nut again Make sure the pressure display in the pressure indicator is a little higher than the atmosphere pressure 7 Remove the charge hose from the Lo pressure charge hose 8 Fully open the Hi and Lo packed valve 9 Securely tighten the cap of the packed valve Gas leak check Soap water method Apply soap water or a liquid neutral detergent on the indoor unit connections or outdoor unit 18 connections by a soft brush to check for leakage of the connecting points of the piping If bubbles come out the pipes have leakage 6 5 Pumping down Re installation I ndoor unit ZN Liquid _ Outdoor unit JE 2 way valve EN Gas side x Lew M 3 way se N L Open a N WY PU J 2 y Close Procedure 1 Confirm that both the 2 way and 3 way valves are set to the opened position Remove the valve stem caps and confirm that the valve stems are in the opened position Be sure to use a hexagonal wrench to operate the valve stems 2 Operate the unit for 10 to 15 minutes 3 Stop
9. siese Procedure 1 Connect the vacuum pump to the charge set s centre hose 2 Evacuation for approximately one hour Confirm that the gauge needle has moved toward 0 1 Mpa 76 cmHg vacuum of 4 mmHg or less 3 Close the valve Low side on the charge set turn off the vacuum pump and confirm that the gauge needle does not move approximately 5 minutes after turning off the vacuum pump 4 Disconnect the charge hose from the vacuum pump 22 6 9 Gas charging Charging cylinder Procedure 1 Connect the charge hose to the charging cylinder Connect the charge hose which you disconnected from the vacuum pump to the valve at the bottom of the cylinder If the refrigerant is R410A make the cylinder bottom up to ensure liquid charge 2 Purge the air from the charge hose Open the valve at the bottom of the cylinder and press the check valve on the charge set to purge the air be careful of the liquid refrigerant 3 Open the valves Low side on the charge set and charge the system with liquid refrigerant 4 Disconnect the charge hose from the 3 way valve s service port immediately Stopping partway will allow the refrigerant to be discharged If the system has been charged with liquid refrigerant while operating the air conditioner turn off the air conditioner before disconnecting the hose 5 Mounted the valve stem caps and the service port Use torque wrench to tighten the service port
10. NDOOR FAN MOTOR I VS M Y t CO SWING MOTOR D P al POWER SUPPLY s d EE PIPE TEMP SENSOR BLACK AF RED ROOM TEWP SENSOR i L 9 ve DISPLAY BOARD I L SWITCH BOARD I an 1 CJ PLASMA OUTDOOR UNIT LJ MICRO SWITCH TRANSFORMER I I I Notes s s This symbol indicates the element is optional the actual shape shall be prevail 13 5 2 Outdoor Unit MSX 07HRFN1 QE4 B MSX 09HRFN1 QE0 B MSX 12HRFN1 QD2 B MR Een et AMDIEIT HER EXCHANGER SENSOR BLACK DISCHARGE SENSOR SB80R v OLP TEMP SENSOR EXPANSIVE VALE E Ed U BLUE d V RED ve 2 EISE e e ei uc L N SGND INDOOR UNIT ae oe Note according to different terminals GND can be connected TEMA in different ways Y G CN 26 CN 24 D ge KT EE CN31 OPTIONAL HEATER 2 F RK E YELLOW EES SS OO EERS EE EE EP RED 3 i m ORANGE OUTDOOR WIRING DIAGRAM CAPACTOR EO MSX 09HRDN1 QC2 A EAT EXCHANGER SENSOR eee i BLACK p OPTIONAL HEATER Lh DISCHARGE SENSOR TEP SES OR 1 cvm _ I HEATER 1 I T U BLUE OUTDOOR MAIN L N sGNp L Y G COMPRESSOR a INDOOR UNIT Note according to YIG different terminals GND can be connected D in different ways REACTOR 1 BLACK 3 BLUE CAPACI TOR OUTDOOR OUTDOOR WIRING DIAGRAM 15 6 Installation detail
11. XSFI 1104 A Mide a S SKLIMA tegic Products SERVICE MANUAL MIDEA AIRCONDITIONER EUROPE MARKET SPLIT WALL MOUNTED TYPE X SERIES The designs and information in this book are subject to change without notice for product improvement CONTENTS T Precautloh EE EE N RE EE N kayao saya N EE NN 1 1 1 Safety Precaution EE ES u eto eerta e Re Ee 1 AZ ER Mc 1 2 egpgme ems 6 3 Dimension EE EE RD LEM A D EDD DEE 9 ema ae loona O Nai Mt 9 3 2 Outdoor Unit ssai n Do SE ee Ad a asia AEE ed ee 10 4 Refrigerant Cycle Diagram ee Re AR RAGE ER RE AR RE AR 11 WIring de 11 BEI N EE ARA 12 Dal INGOOR URE EE Mets EE ut T EN 12 5 2 Outdoor UM ec ee her Pe ee Sm het Su ee ee ed Ee De gee 14 6 Installation details DE PPP 16 6 1 Wrench torque sheet for installation eene 16 6 2 Connecting the cables deti petierit eet ise t 16 6 3 Pipe length and the elevation sssssssee Hmmm mmmnnnmnnnnnnnrnnnnnns 17 6 4 Air purging with vacuum pump m mmm emm en nnn nnnn nnne nnn nnns nnns nnns nnns nnns nensis 17 6 5 Pumping down Re installation n Re ee ee ee ee ER Re Re ee ee ee ee ee Re ee ee ee 19 6 6 Re air purging Re installation n nsn nn 20 6 7 Balance refrigerant of the 2 way 3 way valves I ee Re Re ee ee ee ee ee 21 6 9
12. at could cause personal injury B Do not drink the water drained from the product It is not sanitary could cause serious health issues B 3 Use a firm stool or ladder when cleaning or maintaining the product Be careful and avoid personal injury m Replace the all batteries in the remote control with new ones of the same type Do not mix old and mew batteries or different types of batteries There is risk of fire or explosion B Do not recharge or disassemble the batteries Do not dispose of batteries a fire They may burn of explode B Ifthe liquid from the batteries gets onto your skin or clothes wash it well with clean water Do not use the remote of the batteries have leaked The chemical in batteries could cause burns or other health hazards 2 Function Model Names of Indoor Outdoor Units Full DC Inverter Capacity MSX 07HRFN1 QE4 B 12k Model MSX 12HRFN1 QD2 B Indoor units MSX 07HRFN1 QE4 B MSX 09HRDN1 QC2 A MSX 09HRFN1 QEO B MSX 12HRFN1 QD2 B Outdoor units MOC1 07HFN1 QE4 MOR 09HDN1 QC2 MOC1 O9HFN1 OEO MOC1 12HFN1 QD2 LCD display Operation by remote controller Anti freezing control in cooling Prevent the water being frozen on evaporator by checking the evaporator pipe temperature Time Delay Safety Indoor fan speed control Turbo wind high med low breeze Two direction air vane The unit will decide the louver direction according to operation mode
13. cap Be sure to check for gas leakage 23 7 Operation characteristics Mode Temperature Cooling operation Heating operation Drying operation Room temperature 217 C 30 C gt 10 C 0 C 50 C Outdoor temperature 15 C 50 C For the models with PRE RRS 50 low temperature cooling system CAUTION 1 If air conditioner is used outside of the above conditions certain safety protection features may come into operation and cause the unit to function abnormally 2 Room relative humidity less than 80 If the air conditioner operates in excess of this figure the surface of the air conditioner may attract condensation Please set the vertical air flow louver to its maximum angle vertically to the floor and set HIGH fan mode 3 Optimum performance will be achieved within this operating temperature 24 8 Electronic function 8 1 Abbreviation T1 T2 T3 T4 T5 Indoor ambient temperature Coil temperature of indoor heat exchanger Coil temperature of outdoor heat exchanger Outdoor ambient temperature Compressor discharge temperature 8 2 Display function Icon explanation on indoor display board N MEE Signal receptor OPERATION display Displayed when the air conditioner is in operation A y H NYU AUTO operation display Displayed during Auto operation LL I DEFROST operation display For Heating amp Cooling
14. ction diagnosis and solution Check whether the connections between outdoor PCB and IPM are good Yes Check whether the IPM is fixed to radiator i Fastening the IPM to the radiator tightly Replae the IPM Replace the compressor 9 2 6 Over voltage or too low voltage protection diagnosis and solution No Is the power supply good Make sure the power supply is normal Yes The unit does not work normally Replace the outdoor e box 9 2 7 High temperature protection of compressor top diagnosis and solution 2 No Does compressor operate Is the connection good Reconnect it Yes Yes Is refrigerant circulation volume normal Is protector normal No Charge refrigerant Na Replace it Is abnormality the same after gas charging Replace the outdoor PCB There is block Such as capillary or welded points of the pipes 38 9 2 8 Inverter compressor drive error diagnosis and solution Is the connection of compressor good Is the wiring sequence right The Reconnect and retry voltage range proper Replace the outdoor PCB Replace inverter compressor 9 2 9 Zero crossing detection error When such failure occurs the main control board must have fault 39
15. ction error diagnosis and solution Turn off the power supply after 1 minute connect the power supply turn on the unit with remote controller The unit does not work normally Check the wiring between indoor and outdoor No unit Is the connection of L N S and GND good sl Reconnect and retest Yes Is the LED4 red bright and LED1 yellow Yes blinking on outdoor PCB Replace indoor PCB and repower The unit does not work normally The power supply for outdoor PCB is fail Check the wiring on outdoor PCB Yes comparing with wiring plate Is the Replace outdoor e box connection good No Correct the connection 36 9 2 3 Fan speed out of control diagnosis Shut off the power supply and turn on it 5s later The unit does not work normally Turn off the unit rotate the cross Disassemble the connection between fan Does it rotate freely fan and motor check if the bearing is normal If not change the bearing If yes follow the below step Is the fan motor connector and connection good Is the voltage being applied to the fan motor Replace the fan motor Replace the PCB 9 2 4 Open or short circuit of temperature sensor diagnosis and solution Check the connections between the sensors and the PCB Are the connections good Yes i Yes Replace the sensor and check if Replace outdoor PCB the errors happen again 37 9 2 5 IGBT over strong current prote
16. equipped There is risk of physical injury electric shock or product failure m When the product is soaked flooded or submerged contact an Authorized service center There is risk of fire or electric shock B caution that water could not enter the product There is risk of fire electric shock or product damage B Ventilate the product from time to time when operating it together with a stove etc There is risk of fire or electric shock m Turn the main power off when cleaning or maintaining the product There is risk of electric shock m When the product is not be used for a long time disconnect the power supply plug or turn off the breaker There is risk of product damage or failure or unintended operation m Take care to ensure that nobody could step on or fall onto the outdoor unit This could result in personal injury and product damage CAUTION B Always check for gas refrigerant leakage after installation or repair of product Low refrigerant levels may cause failure of product B install the drain hose to ensure that water is drained away properly A bad connection may cause water leakage m Keep level even when installing the product 3 It can avoid vibration of water leakage m Do not install the product where the noise or hot air from the outdoor unit could damage the neighborhoods It may cause a problem for your neighbors m Use two or more people to lift and transport the product Avoid per
17. if T1 Ts 2 compressor will stop Meanwhile the compressor running frequency is limited by the current 28 Off I3COOL Decrease COOL N N Hold TICOOL Resume Off Compressor stop Decrease Decrease the running freguency to the lower level Hold Keep the current freguency Resume No limitation for freguency Note When AC is in hold zone for 3 minutes the compressor freguency will rise to the higher level freguency will increase twice at most 8 4 2 2 Outdoor fan running rules High 22 20 8 4 2 3 Indoor fan running rules In cooling mode indoor fan runs all the time and the speed can be selected as high medium low and auto Auto fan in cooling mode acts as follow Room temp Setting temp 29 8 4 2 4 Condenser high temperature T3 protection When 55 lt T3 lt 60 the compressor frequency will decrease to the lower level until to F1 and then runs at F1 When T3 lt 54 the compressor will keep running at the current frequency When T3 52 the compressor will not limit the frequency and resume to the former frequency When T3260 for 5 seconds the compressor will stop until T3 52 8 4 2 5 Evaporator low temperature T2 protection When T2 0 the compressor will stop and restart when T2 gt 5 When OC T2 4 the compressor frequency will be limited and decreased to the lower level every minute When 4 sT2s7_ the compressor will keep the current frequency When T2 gt
18. is risk of fire or electric shock m Do not place anything on the power cable There is risk of fire or electric shock B Do not plug or unplug the power supply plug during operation There is risk of fire or electric shock m Do not touch operation the product with wet hands There is risk of fire or electric shock Do not place a heater or other appliance near the power cable There is risk of fire and electric shock m Do not allow water to run into electric parts It may cause fire failure of the product or electric shock m Do not store or use flammable gas or combustible near the product There is risk of fire or failure of product B Do not use the product in a tightly closed space for a long time Oxygen deficiency could occur m When flammable gas leaks turn off the gas and open a window for ventilation before turn the product on Do not use the telephone or turn switches on or off 2 There is risk of explosion or fire B f strange sounds or small or smoke comes from product Turn the breaker off or disconnect the power supply cable There is risk of electric shock or fire m Stop operation and close the window in storm or hurricane If possible remove the product from the window before the hurricane arrives There is risk of property damage failure of product or electric shock m Do not open the inlet grill of the product during operation Do not touch the electrostatic filter if the unit is so
19. l time interval should be between 6 13ms 8 4 Operation Modes and Functions 8 4 1 Fan mode 1 Outdoor fan and compressor stop 2 Temperature setting function is disabled and no setting temperature is displayed 3 Indoor fan can be set to high med low auto 4 The louver operates same as in cooling mode 5 Auto fan The action of auto fan in fan only mode is the same as auto fan in cooling mode with 24 setting temperature 3 5 3 0 medium 1 5 1 24 1 0 8 4 2 Cooling Mode 8 4 2 1 Compressor running rules The operation frequency of compressor after starting submits to the following rule 27 45 43 40 38 30 28 22 20 Fmax F4 Fmax F7 Fmax F8 Fmax F6 Fmax F3 Y If users switch on AC by remote controller the compressor will run at the Fmax frequency for 7 minutes according to outdoor ambient temp During the 7 minutes frequency limitation is active 7 minutes later the compressor running frequency will be controlled as below While T1 Ts 3 5 3 0 2 5 2 0 Temp zone Frequency F8 F8 F7 F6 F5 F3 F1 FO Note When T1 Ts keeps in the same temp zone for 3 minutes the compressor will run as the below rules A E Increase the frequency to the higher level until to F8 F Keep the current frequency G Decrease the frequency to the lower level until to F1 H Run at F1 for 1h
20. n the system rises Operating current rises Cooling or heating efficiency drops Moisture in the refrigerant circuit may freeze and block capillary tubing Water may lead to corrosion of parts in the refrigerant system Therefore the indoor units and the pipes between indoor and outdoor units must be leak tested and evacuated to remove gas and moisture from the system Air purging with vacuum pump Indoor unit Liquid side Outdoor unit am Two way valve ES TU N Gas side 17 Three way valve Manifold valve m Close Compound meter M U Pressure lt gauge 76cmHg 1 d Lo Hi ju N x E J TT Handle Lo E39 3 V Handle Hi m Charge hose ER Vacuum SS 7 adaptor C Vacuum pump 1 Completely tighten the flare nuts of the indoor and outdoor units connect the manifold valve charge 2 Connect the charge hose connection to the vacuum pump 3 Fully open the handle Lo of the manifold valve 4 Operate the vacuum pump to evacuate After starting evacuation slightly loose the flare nut of the Lo valve on the gas pipe side and check the air is entering Operation noise of the vacuum pump changes and a compound meter indicates 0 stead
21. operation and wait for 3 minutes then connect the charge set to the service port of the 3 way valve Connect the charge hose with the push pin to the gas service port 5 Air purging of the charge hose Open the low pressure valve on the charge set slightly to purge air from the charge hose 6 Set the 2 way valve to the close position 7 Operate the air conditioner at the cooling cycle and stop it when the gauge indicates 0 1MPa 8 Immediately set the 3 way valve to the closed position Do this quickly so that the gauge ends up indicating 0 3 to 0 5Mpa 19 Disconnect the charge set and amount the 2 way and 3 way valve s stem nuts and service port caps Use a torque wrench to tighten the service port cap Be sure to check for gas leakage 6 6 Re air purging Re installation Charging cylinder Procedure 1 Confirm that both the 2 way and 3 way valves are set to the closed position 2 Connect the charge set and a charging cylinder to the service port of the 3 way valve Leave the valve on the charging cylinder closed 3 Air purging Open the valves on the charging cylinder and the charge set Purge the air by loosening the flare nut on the 2 way valve approximately 45 for 3 seconds then closing it for 1 minute repeat 3 times After purging the air use a torque wrench to tighten the flare nut to on the 2 way valve 4 Check the gas leakage Check the flare connections for gas leakage 5 Discharge the
22. orced cooling or any other operation mode pressing touch button will turn off the machine 8 4 5 2 In forced operation mode all general protections and remote control are available 8 4 5 3 Operation rules Forced cooling mode The compressor runs at F2 frequency and indoor fan runs as breeze After running for 30 minutes the machine will turn to auto mode as 24 setting temperature Forced auto mode The action of forced auto mode is the same as normal auto mode with 24 setting temperature 8 4 6 Timer function 8 4 6 1 Timing range is 24 hours 8 4 6 2 Timer on The machine will turn on automatically when reaching the setting time 31 8 4 6 3 Timer off The machine will turn off automatically when reaching the setting time 8 4 6 4 Timer on off The machine will turn on automatically when reaching the setting on time and then turn off automatically when reaching the setting off time 8 4 6 5 Timer off on The machine will turn off automatically when reaching the setting off time and then turn on automatically when reaching the setting on time 8 4 6 6 The timer funtion will not change the AC current operation mode Suppose AC is off now it will not start up firstly after setting the timer off function And when reaching the setting time the timer LED will be off and the AC running mode has not been changed 8 4 6 7 The setting time is relative time 8 4 7 Sleep function mode 8 4 7 1 Operation time in slee
23. p mode is 7 hours After 7 hours the AC quits this mode and turns off 8 4 7 2 Operation process in sleep mode is as follow When cooling the setting temperature rises 1 be lower than 30 every one hour 2 hours later the setting temperature stops rising and indoor fan is fixed as low speed 8 4 7 3 Timer setting is available 8 4 7 4 When user uses timer off function in sleep mode or sleep function in timer off mode if the timing is less than 7 hours sleep function will be cancelled when reaching the setting time If the timing is more than 7 hours the machine will not stop until reaches the setting time in sleep mode 8 4 8 Auto Restart function The indoor unit is equipped with auto restart function which is carried out through an auto restart module In case of a sudden power failure the module memorizes the setting conditions before the power failure The unit will resume the previous operation setting not including Swing function automatically after 3 minutes when power returns If the memorization condition is forced cooling mode the unit will run in cooling mode for 30 minutes and turn to auto mode as 24 setting temp If AC is off before power off and AC is required to start up now the compressor will have 1 minute delay when power on Other conditions the compressor will have 3 minutes delay when restarts 8 4 9 lonizer Plasma dust collector function optional The indoor unit is equipped with lonizer which is controlled by the
24. refrigerant Close the valve on the charging cylinder and discharge the refrigerant until the gauge indicates 0 3 to 0 5 20 Mpa 6 Disconnect the charge set and the charging cylinder and set the 2 way and 3 way valves to the open position Be sure to use a hexagonal wrench to operate the valve stems 7 Mount the valve stems nuts and the service port cap Be sure to use a torque wrench to tighten the service port cap Be sure to check the gas leakage 6 7 Balance refrigerant of the 2 way 3 way valves io w s TIE Indoor unit A Z Liquid side ca Outdoor unit ON valve ZN Gas side P ant PN wa Procedure 1 Confirm that both the 2 way and 3 way valves are set to the open position 2 Connect the charge set to the 3 way valve s service port Leave the valve on the charge set closed Connect the charge hose with the push pin to the service port 3 Open the valves Low side on the charge set and discharge the refrigerant until the gauge indicates 0 05 to 0 1Mpa If the pressure when the air conditioner is not running is higher than 0 1Mpa discharge the refrigerant until the gauge indicates 0 05 to 0 1 Mpa Discharge the refrigeration gradually if it is discharged too suddenly the refrigeration oil sill be discharged 21 6 8 Evacuation indoor uni Liquid side Outdoor unit 2 way valve 3 way valve Vacuum pump 4
25. s 6 1 Wrench torque sheet for installation Additional tightening Outside diameter Torque torque mm inch N cm N cm 1500 1600 06 35 1 4 153kgf cm 163kgf cm 2500 2600 9 52 3 8 255kgf cm 265kgf cm 6 2 Connecting the cables The power cord of connect should be selected according to the following specifications sheet Rated current of appliance Minimum nominal cross sectional area mm 23 and lt 6 0 75 26 and lt 10 1 0 gt 10 and lt 16 1 5 The cable size and the current of the fuse or switch are determined by the maximum current indicated on the nameplate which located on the side panel of the unit Please refer to the nameplate before selecting the cable fuse and switch 6 3 Pipe length and the elevation The pipe length and refrigerant amount Model Connective pipe length Air purging Additional amount of refrigerant All Less than 5m Use vacuum pump All More than 5m Use vacuum pump Pipe length 5 x 20g m Model Standard length m Max Elevation m Max Length m All 5 8 20 Caution Indoor unit Outdoor unit Indoor unit Capacity test is based on standard length and maximum allowance length is based on system reliability Oil trap should be installed per 5 7 meters 6 4 Air purging with vacuum pump Air and moisture in the refrigerant system have undesirable effects as below Pressure i
26. sonal injury B Do not install the product where it will be exposed to sea wind salt spray directly It may cause corrosion on the product Corrosion particularly on the condenser and evaporator fins could cause product malfunction or inefficient operation gt Operational B Donotexpose the skin directly to cool air for long periods of time Do not sit in the draft This could harm to your health B Do not use the product for special purposes such as preserving foods works of art etc It is a consumer air conditioner not a precision refrigerant system There is risk of damage or loss of property m Do not block the inlet or outlet of air flow It may cause product failure B Useasoftcloth to clean Do not use harsh detergents solvents etc There is risk of fire electric shock or damage to the plastic parts of the product m Donottouch the metal parts of the product when removing the air filter They are very sharp There is risk of personal injury B Donot step on or put anything on the product outdoor units There is risk of personal injury and failure of product m Always insert the filter securely Clean the filter every two weeks or more often if necessary A dirty filter reduces the efficiency of the air conditioner and could cause product malfunction or damage B Donotinsert hands or other object through air inlet or outlet while the product is 4 operated There are sharp and moving parts th
27. sor stops 108 T5 115 decrease the frequency to the lower level every 3 minutes 90 lt 75 lt 105 keep running at the current frequency T5 lt 90 no limit for frequency 8 3 4 Fan Speed is out of control When Indoor Fan Speed keeps too low or too high for certain time the unit will stop and the LED will display the failure 8 3 5 Inverter module Protection The Inverter module itself has a protection function against current voltage and temperature If these protections happen the corresponding code will display on indoor unit 8 3 6 Indoor fan delayed open function When the system starts up the louver will be active immediately and the indoor fan will open 10s later 8 3 7 Compressor preheating functions Preheating permitting condition If T4 outdoor ambient temperature lt 3 the machine connects to power supply newly or if T4 lt 3 and compressor has stopped for over 3 hours the compressor heating cable will work Preheating mode A weak current flow through the coil of compressor from the wiring terminal of compressor then the compressor is heated without operation Preheating release condition If T4 gt 5 or the compressor starts running preheating function will stop 26 8 3 8 Zero crossing detection error protection If AC detects time interval is not correct for continuous 20 zero crossing signal the unit will stop and the LED will display the failure The correct zero crossing signa
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