Service Manual MUPR-H4 CL20804 to CL20808 - En
Contents
1. Model MUPR 09 H4 MUPR 12 H4 MUPR 18 H4 MUPR 24 H4 Dimension of installation hole mm MUPR 09 H4 275 100 95 65 MUPR 12 H4 Dimension of installation hole mm 2 65 mm C mm D mm Dimension of installation hole mm 163 315 __ 46800000 Model 3 2 Outdoor More than 30cm 7 More than 30cm More than 60cm More than 200cm w _ wass me _ W I 780 MUPR 24 H4 More than 60cm Service space ty 44 oss 11 4 Refrigerant Cycle Diagram INDOOR HEAT EXCHANGE EVAPORATOR T2 Evaporator temp sensor T1 Room temp sensor OUTDOOR QUID SIDE CHECK VALVE Heating Model onl Heating Model only 4 2 WAY VALVE p Condenser temp sensor CAPILIARY TUBE HEAT T4 Ambient EXCHANGE temp sensor CONDENSER M j x GAS SIDE lt S is Y Je NY 42. is broken Yes y Check the wires of fan motor Are all the No gt Correct the connections connections good Yes y If the Check whether the fan malfunction is MR motor is normal through still existing index 1 replace the 4 main Y Replace the Check whether the main PCB is nan POB No p The normal through index 2 malfunction is solved Yes 53 Index 1 1 Indoor Fan Motor Measure the resistance value of each winding by using the tester Input Terminal Red Red 1 Black 2 White White 3 Resistance Value RPG20E RPG45C Black Red 43005896 20 C 38804589 20 1750 8 20 C 1680 8 20 C Brand Dayang Brand Weiling Brand Dayang Brand Weiling White Black 3700 8 20 3600 8 20 1050 8 20 1410 8 20 Brand Dayang Brand Weiling Brand Dayang Brand Weiling 2 Outdoor or indoor DC Fan Motor control chip is in fan motor Measure the resistance value of each winding by using the tester If any resistance value is zero the fan motor must have problems and need to be replaced 54 3 Outdoor or indoor Fan Motor control chip is in PCB For WZDK36 38G W 1 UVW 1 Release the UVW c
3. OPTIONAL 1 ELECTRONIC EXPANSIVE 1 VALVE L SSUR T em NN cp AGH PRESSURE PROTECT DUTDOOR AMBIENT TEMPERATURE SENSUR 62 5 L JT GONDENSER TEMPERATURE SENSOR DISCHARGE SENSOR 2114 1 QU1 C39 CN37 YELLOW 012 wie 91919191916 vic d 5 a IUV T INDOOR UNIT he maximum system current The maximum system currents equal tathesum af Indoor unit and outdoor umit rated current 16 LPR CREPES SRP PRR 6 Installation Details 6 1 Wrench torque sheet for installation Outside diameter Additional tightening torque 6 35 1500 153kgf cm 1600 163kgf cm 6500 663kgf cm 6700 683kgf cm 6 2 Connecting the cables The power cord of connect should be selected according to the following specifications sheet Rated current of appliance Nominal cross sectional area mm 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 c
4. 57 9 2 6 Refrigerant Leakage Detection diagnosis and solution EC Shut off the power supply and turn it on 5 seconds later Is it still displaying the error code Yes v Check if T2 sensor is well Is there cool air blowing fixed Correct the installation Yes out from indoor air outlet or replace T2 sensor Does the problem remain again b Yes Y Y Is there any leakage Especially Replace indoor PCB the connection parts such as the gas valve and the liquid valve Yes No Repair the leakage and recharge the refrigerant v Is there any blocking Such as the capillary or the welded points of the pipes Yes v Clear the blocking 58 9 2 7 IPM malfunction or IGBT over strong current protection diagnosis and solution PO Check if the wiring between main Correct the connection or PCB and compressor connected by Yes replace the wires and error and if the wires and connectors connectors are broken Y Correct the installation Check if the IPM installed correctly No tighten the screws and apply silicon grease Yes v IPM continuity check Check if the Replace the IPM board or replace IPM terminal resistance values are No the main PCB if the IPM board and un
5. C 1 90 I W RED 3 CIT etue YIG mamam A EPL EL n e wl CE KFR2GWIBPS IR311_PFC 120 0 13 MP 2 9 m 2111 EE CN 32 10 INDOOR UNIT POWER SUPPLY 1 mel cus Liss 4 wearer 211 r OPTIONAL REACTOR 81009 820035 Gurpoon FAN l QULDUUR WIRING DIAGRAM Shc nim iam lin mie i J MUPR 24 H4 E E E E HE E E E E E E E HE E EH S E E S E E B E E S E E E asssssusassaw E K E ES B E BE E E B E ES E ES E E ES B E S BE ESE BE E EBE E 20203809092 h h h amp COMPRESSOR i 1 i 1 i i 1 1 I r 3 RY 4 1 HEAT HEAT GEACA f G 1 Emm de Ray E as MOTE As standby control needs the cross section area of cable connected ta VV 1fL 20N must be selected to MAIN BOARD 8488 Ka k s
6. Gas side 0 1MPa Handle Lo Manif Compound y Id valve lt Pressure Three way valve f 2 mw 5 QI E n KOOP 9552558 eT Handle Hi Charge hose Vacuum pump Vacuum pump 1 Completely tighten flare nuts of the indoor and outdoor units confirm that both the 2 way and 3 way valves are set to the closed position 2 Connect the charge hose with the push pin of handle lo to the 3 way valves gas service port 3 Connect the charge hose of handle hi connection to the vacuum pump 4 Fully open the handle Lo of the manifold valve 5 Operate the vacuum pump to evacuate 6 Make evacuation for 30 minutes and check whether the compound meter indicates 0 1 If the meter does not indicate 0 1Mpa after pumping 30 minutes it should be pumped 20 minutes more If the pressure can t achieve 0 1Mpa after pumping 50 minutes please check if there are some leakage points Fully close the handle Lo valve of the manifold valve and stop the operation of the vacuum pump Confirm that the gauge needle does not move approximately 5 minutes after turning off the vacuum pump 7 Turn the flare nut of the 3 way valves about 45 counterclock
7. 6 1 0862 i jen 1 6969 INDOOR UNIT W wo 09 9 8 QD 9991991 OUTDOOR UNIT MULTI FUCTION CONTROL BOX OPTIONA 12 202032891454 SWING MOTOR OPTIONAL 1 OPTIONAL 21 1 ON43 CN 008 SENSOR e LH 089 8104 0810 OPTIONAL Wire Contoller MUPR 24 H4 INDOOR WIRING DIAGRAM 202032991204 SUING MOTOR s RELAY ASSISTANT BOARD OPTIONAL vt as 0000 VERTICAL om GEMEEATIR FP SL 8 i 558 swine Y i i qu LI o MOTOR LACK Un 12345 T N HEAT E 110 iON 3 ON 2 MAIN BOARD WeIT Bi UEIBLACK CNS 12345678 Noles m 79 55 001 am TF This syma T l eee tee x s Osan lhe actu shape shal 885 See 2 pipe T1 room i un Wa OUTDOOR UNIT POWER 10 INDOOR WT NOTES 1 The Functions In The Rectangle Are Available For Particular Air condstion 2 lf used as unit for the standby control needs the cross section area of cable connected to W UL 2 N must be sufficient for the maximum system current The maximum system current is
8. 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 T1 24 co 6 0 H H L 0 754L nm b 1 0 5 1 2 H L 0 254L 2 5 0 32 8 4 2 Cooling Mode 8 4 2 1 Compressor running rules The maximum operation frequency of compressor after starting submits to following rule T4 50 Fmax TAFREMAX1 49 Fmax T4FREMAX2 45 44 Fmax T4FREMAX3 41 40 Fmax T4FREMAX4 33 32 Fmax T4FREMAX5 30 29 Fmax T4FREMAX6 22 20 Fmax T4FREMAX7 Y Meanwhile the maximum frequency is limited by the indoor fan speed Indoor fan speed Maximum frequency High speed turbo function Silent mode Fixed at F3 If users switch on AC by remote controller the compressor will run at the Fmax frequency for 7 minutes according to the outdoor ambient temp During the 7 minutes the frequency limitation is active 7 minutes later the compressor running frequency will be controlled as below 33 T1 Ts 3 5 A 3 0 E 25 While the zones of A B C are corresponding to different compressor running frequency Note When T1 Ts keeps in the same temp zone for 3 minutes the compressor will run as
9. in cooling mode 43 8 4 5 2 Compressor running rules T1 Ts 25 F7 E x F1 8 4 5 3 Low indoor room temperature protection In drying mode if room temperature is lower than 10 C the compressor will stop and not resume until room temperature exceeds 12 C 8 4 5 4 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 5 5 The outdoor fan operates the same as in cooling mode 8 4 6 Forced operation function 8 4 6 1 Enter forced operation function When the machine is off pressing the touch button will carry the machine to forced auto mode If pressing the button once again within 5 seconds the machine will turn into forced cooling mode In forced auto forced cooling or any other operation mode pressing touch button will turn off the machine 8 4 6 2 In forced operation mode all general protections and remote control are available 8 4 6 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 7 Timer function 8 4 7 1 Timing range is 24 hours 8 4 7 2 Timer on The machine will turn on automatically when reachi
10. B When product is soaked contact an authorized service center There is risk of fire or electric shock B Be caution that water could not enter the product There is risk of fire electric shock or product damage B the product from time to time when operating it together with a stove etc There is risk of fire or electric shock B Turn the main power off when cleaning or maintaining the product There is risk of electric shock B 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 B 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 B Keeplevel even when installing the product It can avoid vibration of water leakage B 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 B Use two or more people to lift and transport the product B Do not install the product where it will be exposed to sea wind salt spray directly It may cause corrosio
11. Outdoor ambient temperature T5 Compressor discharge temperature 8 2 Display function 8 2 1 Icon explanation on indoor display board 4 TL ION indication lamp optional function This lamp illuminates when Clean Air feature is activated DEFROST indication lamp For cooling amp heating models only Lights up when the air conditioner starts defrosting automatically or when the warm air control feature is activated in heating operation OPERATION indication lamp This lamp illuminates when the air conditioner is in operation TIMER indication lamp Lights up during Timer operation Temperature indicator Displays the temperature settings when the air conditioner is operational Displays the malfunction code 29 8 3 Main Protection 8 3 1 Time 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 The unit will stop working when the compressor top temp protector cut off and will restart after the compressor top temp protector restart 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 15 gt 115 for 55 compressor stops and restarts up till T5 lt 90 C 110 T5 115 decrease the frequency to the lower level every 2 minutes 105 lt T5 lt 110 C keep running at the current frequ
12. PCB if the IPM board and uniform main PCB are integrated together Yes Ghock wine Refer to the solution of fan speed has been out of control properly or the outdoor unit NO malfunction Find out the cause ventilation is good i and have it solved Yes v Check if the compressor resistance No Replace the compressor values are uniform Yes Y Replace the outdoor main PCB if the main PCB and IPM are separate 62 Safety Electricity power is still kept in capacitors even the power supply is shut off Do not forget to discharge the electricity power in capacitor BEN NERA Electrolytic Capacitors HIGH VOLTAGE CAUTION Connect discharge resistance 1000 40W or soldering iron plug between terminals of the electrolytic capacitor on the contrary side of the outdoor PCB Discharging position Discharging period 10 seconds or more Flug of 4 soldering iiA iron Ec e Note picture above is only for reference The plug of your side be different Main parts check 1 Temperature sensor checking Disconnect the temperature sensor from PCB measure the resistance value with a tester Tester 63 Temperature Sensors temp T1 sensor Indoor coil temp T2 sensor Outdoor coil temp T3 sensor Outdoor ambient temp T4 sensor Compressor discharge temp T5 sensor Me
13. fire or explosion B 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 2 Function Model Names of Indoor Outdoor Units MUPR 09 H4 MUPR 09 H4 Inverter Filter 2 ways of drainage Killer Of Formaldehyde Louver Position Memory Function lonizer O Refrigerant Leakage Detect Silver Ico Filter O Self diag Function Vitamin C Filter O Hydrophilic Aluminum Fin 3M HAM Filter O Anti rust Cabinet Bio Filter O Valve Protection Cover Golden Fin O PTC Heating Belt O 1W Standby Compressor Crankcase Heater O O optional function 3 Dimension 3 1 Indoor Unit
14. the below rules A Increase the frequency to 3 grade higher until to FREMAX B E Increase the frequency to 2 grade higher until to FREMAX F G Increase the frequency to 1 grade higher until to FREMAX H Keep the current frequency Decrease the frequency to 1 grade lower until to F1 J Run at F1 for 1h if 1 lt 2 the compressor will stop Meanwhile the compressor running frequency is limited by the current T4 CoolTAZonebl 50 49 CoolT4Zone4l 45 44 CoolT4Zone3l 41 i CoolTAZone l 32 4270 34 8 4 2 2 Outdoor fan running rules Cooling 14 i 28 26 25 23 22 20 D 19 17 E Y While A B C means different fan speed of outdoor unit 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 auto and silent When the compressor is running the indoor fan is controlled as below Cri En Ern 81 L L LD 35 The auto fan acts as below rules T1 Ts 6 0 5 0 4 0 2 5 1 0 8 4 2 4 Condenser temperature protection C uw 0 75 L 0 5 L 0 25 L po epp 55 C lt T3 lt 60 the compressor frequency will decrease to the lower level until to F1 and then runs at F1 If T3 54 C the compressor will keep running at the current frequency 13 lt 52 the compres
15. time is not sufficient wait approximately 1 minute and then repeat the procedure 5 When the electronic scale displays the proper weight disconnect the charge hose from the 3 way valve s service port immediately If the system has been charged with liquid refrigerant while operating the air conditioner turn off the air conditioner before disconnecting the hose 6 Mounted the valve stem caps and the service port Use torque wrench to tighten the service port cap to a torque of 18N m Be sure to check for gas leakage 27 7 Operation Characteristics Temperature Cooling operation Heating operation Drying operation 11072910 Outdoor t t 15C 30C 0 50 nies SOS SS For the models with low temperature cooling system CAUTION 1 If the air conditioner is used beyond the above conditions certain safety protection features may come into operation and cause the unit to operate abnormally 2 The room relative humidity should be less than 80 If the air conditioner operates beyond 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 he optimum performance will be achieved during this operating temperature zone 28 8 Electronic function 8 1 Abbreviation T1 Indoor room temperature T2 Coil temperature of evaporator Coil temperature of condenser T4
16. 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 9 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 C 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 45 8 4 10 8 C Heating optional In heating operation the preset temperature of the air conditioner can be as lower 8 which keeps the room temperature steady at 8 and prevents household things freezing when the house is unoccupied for a long time in severe cold weather 8 4 11 Frequency limitation protection Vi Normal VOLT RSTi ADD LIM1 ADD VOLT RST2 ADD VOLT LIM FREQ1 ADD VOLT LIM2 ADD VOLT LIM FREQ2 ADD The PCB will detect the voltage of power supply and adju
17. MUNDEZCLIMA INVERTER SERIE H4 Service Manual MUPR H4 CL20805 to CL20808 12FSI B1 1406 CONTENTS DEI e 3 04101 eM ELE 3 2 Ini u ux naa bed ones 3 aaa 7 1 HOM M S 8 S k 8 22011 0001 2 m 10 4 Cycle Diagram eb 11 5281 gnegBirreieupmc 12 n aN sonia ee une bau hu 12 20110001 REN 14 6 u 17 598 Trench torque snee u u uuruuu uuu uu m 17 62 GOMMeCtinG WSCA SS sis 17 l Ipe length ANG the eleVallOli 502 T 18 64 nstala on for the Hst ime u u u u E RR 19 6 5 Adding the
18. WAY VALVE 3 WAY VALVE Accumulator Compressor T5 Discharge temp sensor 4 COOLING HEATING 11 5 Wiring Diagram 5 1 Indoor Unit MUPR 09 H4 MUPR 12 H4 NOTE If used as MONO unit for the standby control needs the cross section area of cable connected to W 1 L 2 N must be sufficient for the maximum system current The maximum system current is equal to the sum of indoor unit and outdoor unit rated current If used as MULTI unit W on the terminal block does not need to be connected INDOOR WIRING DIAGRAM 1 OPTIONAL 202032591566 P LL 3 N OPTIONAL 1 7 HEATER gt CN13 1 O CN13 2 L QUT CHII INDOOR UNIT o wn Y o m 5 c SSS ae os imi inim FER OPTIONAL MUPR 18 H4 OUTDOOR UNIT 1 MULTI FUCTION CONTROL BOX BHEE SENSOR CNH 2 SE cy LEP Wire Contoller DISPLAY BOARD OPTIONAL NOTE If used as MONO unit for the standby control needs the cross section area of cable connected to W 1 L must be sufficient for the maximum system current The maximum system current is equal to the sum of indoor unit and outdoor unit rated current If used as MULTI unit W on the terminal block does not need to be connected INDOOR WIRING DIAGRAM 171 10N CN12 1 CN12 2
19. able fuse and switch 6 3 Pipe length and the elevation The pipe length and refrigerant amount length Elevation refrigerant EXE MUPR 09 H4 MUPR 12 H4 1 2 ae MUPR 18 H4 012 7 ae Indoor unit Indoor unit Oil trap Outdoor unit Outdoor unit Caution The capacity test is based on the standard length and the maximum permissive length is based on the system reliability The oil trap should be installed per 5 7 meters 18 6 4 Installation for first time Air and moisture in the refrigerant system have undesirable effects as below Pressure in 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 connections by a soft brush to check for leakage of the connecting points of the piping If bubbles come out the pipes have leakage Gas leak check Soap water method Apply soap water or a liquid neutral detergent on the indoor unit connections or outdoor unit 1 Air purging with vacuum pump Indoor unit Outdoor unit Liquid side ME 7 LI H 2 Close
20. ailed meaning please Outdoor unit protection status 6 AC voltage DC voltage Td temperature 8 4 14 Mode Lock consult with engineer Oi j 0 FF Display value Td actual valuex2 50 8 4 14 1 Enter condition Hold touch button of air conditioners and then power on loose the button after 5 10 seconds later the air conditioners will switch to heating only mode for heat pump models Meanwhile the digital tube of panel will display HH for two seconds and then return to normal display 8 4 14 2 Quit condition Power off Hold touch button of air conditioners and then power on loose the button after 5 10 seconds later The air conditioners will quit the condition and return to normal status Meanwhile the digital tube of panel will display for two seconds and then return to normal display 49 9 Troubleshooting 9 1 Indoor Unit Error Display Operation lamp Display LED STATUS X E1 Indoor outdoor units communication error Zero crossing signal detection error only for vx 3 times X i m MUPR 09 H4 MUPR 12H4 and MUPR 24 H4 Indoor fan speed has been out of control Open circuit or short circuit of indoor room temperature T1 Sensor Open circuit or short circuit of evaporator coil temperature T2 sensor E E E E Refrigerant Leakage Detection Open circuit or short circuit of outdoor ambient T4 temperature sensor Open circuit or short circuit o
21. an speed 1 2 3 4 Low speed Medium For some big capacity motors Outdoor fan speed High speed speed Turbo Actual fan For some small capacity motors speed Display value display value is from turns to decimal 14 FF hexadecimal the value and then corresponding fan speed range 15 multiply 10 The unit from 200 2550RPM is RPM EXV opening Actual EXV opening angle value Display value turns to decimal value and then multiply 2 Compressor O0 FF 0 255 minutes If the actual value exceeds the continuous range it will display the maximum running time value or minimum value Causes of For the detailed Decimal display compressor meaning please stop consult with engineer Indoor unit For the detailed status 0 meaning please consult with engineer Indoor unit For the detailed status 1 meaning please consult with engineer Outdoor unit For the detailed status meaning please consult with engineer Outdoor unit For the detailed protection meaning please status 1 consult with engineer Outdoor unit For the detailed protection meaning please BEEN 0 FF consult with engineer 0 FF For the detailed meaning please consult with engineer WOI IIISI BEEN status 2 Outdoor unit b3 protection status 3 For the detailed meaning please Outdoor unit protection status 4 consult with engineer For the detailed meaning please Outdoor unit protection status 5 consult with engineer For the det
22. arging CLOSE 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 on the 2 way valve 4 Check the gas leakage Check the flare connections for gas leakage 5 Discharge the refrigerant Close the valve on the charging cylinder and discharge the refrigerant by loosening the flare nut on the 2 way valve approximately 45 until the gauge indicates 0 3 to 0 5 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 to a torque 18N m Be sure to check the gas leakage 25 6 7 Re installation while the outdoor unit need to be repaired 1 Evacuation for the whole system Indoor unit EZ Liquid side Vacuum pump 2 41 Procedure 1 Confirm that both the 2 way and 3 way valves are set to the opened position 2 Conn
23. asure the resistance value of each winding by using the multi meter Table 1 Some frequently used R T data for T1 T2 T3 and T4 sensor Deme De m Tos Too Fossano Kr 207 ves ves o Table 2 Some frequently used R T data for T5 sensor 0 5 s m 5 8 w Resistance value Temperature 64 opec 210032300888 270032400274 270032800688 270032900557 MUPR 09 H4 MUPR 12 H4 MUPR 18 H4 MUPR 24 H4 ASN108D22UEZ ASN108D22UEZ DA130M1C 31FZ DA150S1C 20FZ WZDK30 38G Indoor fan motor RPG20E RPG20E Gh 45 Outdoor fan WZDK36 38G W WZDK36 38G W WZDK36 38G W WZDK50 38G motor 5 Note The motor marked DC fan motor with control chip the PCB while the one marked x means fan motor with control chip in the fan motor 2 Compressor checking Measure the resistance value of each winding by using the tester Input Terminal Blue 5 Blue 4 2 Red 2 CU L4 Black Black 3 nd 5 Position Resistance Value ASN108D22UEZ DA130M1C 31FZ DA150S1C 20FZ 1 50 1 770 0 950 20 C 20 C 200 3 IPM continuity check Turn off the power let the large capacity electrolytic capacitors discharge completely and dismount the IPM Use a digital tester to measure the resistance between P and UVWN UVW and N Digital tester Normal resistance value Several Digital tester N
24. ect the vacuum pump to 3 way valve s service port 3 Evacuation for approximately one hour Confirm that the compound meter indicates 0 1 4 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 5 Disconnect the charge hose from the vacuum pump 26 2 Refrigerant charging Indoor unit Liquid side _ Outdoor unit X i 2 way valve y way valv d way _ eu Ts aim Charging cylinder Jse to the charging cylinder open the 2 way valve and the 3 way valve 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 Put the charging cylinder onto the electronic scale and record the weight 4 Open the valves Low side on the charge set and charge the system with liquid refrigerant If the system cannot be charge with the specified amount of refrigerant or can be charged with a little at a time approximately 150g each time operating the air conditioner in the cooling cycle however one
25. ency 15 lt 105 no limit for frequency 8 3 4 Fan Speed is out of control When Indoor Fan Speed keeps too low SOORPM for certain time the unit will stop and the LED will display the failure 8 3 5 Inverter module protection Inverter module has a protection function about current voltage and temperature If these protections happen the corresponding code will display on indoor unit and the unit will stop working 8 3 6 Indoor fan delayed open function When the unit starts up the louver will be active immediately and the indoor fan will open 10s later If the unit runs in heating mode the indoor fan will be also controlled by anti cold wind function 8 3 7 Compressor preheating functions Preheating permitting condition If T4 outdoor ambient temperature lt 3 C and the machine connects to power supply newly or if T4 C and compressor has stopped for over hours the compressor heating cable will work Preheating mode A weak current flow through the coil of compressor from the wiring terminal of the compressor then the compressor is heated without operation 30 Preheating release condition If T4 gt 5 C or the compressor starts running the preheating function will stop 8 3 8 Sensor protection at open circuit and breaking disconnection When there s one temperature sensor in malfunction the air conditioner will display error code and will not stop immediately to avoid the case that the air conditioner is in urge
26. equal to the sum of indoor uns and outdoor unit rated current H used as MULT unit W on the terminal block does not need be connected 13 e Ses ERS 554 REB fy oe ees ops bee fase Eee aqoa inna dusk ia Enn e do a Nc RR a sa a m emma Y L I I pote eet 5 2 Outdoor MUPR 09 H4 po E UT 202037391398 a mk OPTIONAL OPTIONAL OLP TEMP ES Mi HEAT EXCHANGER 11 Ds SENSOR TIEN 12 I I a 50 sooo L eee CN14 CN100 Peake eee eS OPTIONAL HEATER aU E I m gt 4 TI 22 no y J NOTE Faur way valve s isusedinthe 1 14 1 _ E amp Healing ae m 4 2 T 224 00 co e m P WHITE eee REACTOR 89251 14 MUPR 12 H4 MUPR 18 H4 202037391399 pen EL LL 00000000 S OH 1 qum ws TEMP SENSOR 1 65 sas TF E000 sess i 224 i OW t TT E NOTE Four way valve YELLOW U BLUE
27. f condenser coil temperature T3 sensor Open circuit or short circuit of compressor discharge T5 Over voltage or over low voltage protection High temperature protection of compressor top diagnosis and times solution Only for MUPR 24 H4 model 5 ms P4 Inverter compressor drive error O light X flash 3 4 9 F1 F2 F3 F5 P1 X 50 9 2 Diagnosis and Solution 9 2 1 EEPROM parameter error diagnosis and solution EO Shut off the power supply and turn it on 5 seconds later Is it still displaying the error code Yes Y If the EEPROM chip 5 welded on main PCB replace the main PCB directly Otherwise check No Correct the connection whether the EEPROM chip plugged in main PCB well Yes v Replace the indoor main PCB EEPROM a read only memory whose contents can be erased and reprogrammed using a pulsed voltage 51 9 2 2 Indoor unit and outdoor unit communication protection error diagnosis and solution E1 Power off then turn on the unit 5 seconds later reconnect the power wire Is the error still displaying after several minutes Yes v Check all the wirings between indoor and outdoor indoor main PCB and outdoor main PCB following the wiring diagram Are the wirings connected correctly Yes Y Measure Vs is it moving alternately with p
28. he service port Use torque wrench to tighten the service port cap to a torque of 18N m Be sure to check for gas leakage 23 6 6 Re installation while the indoor unit need to be repaired 1 Collecting the refrigerant into the outdoor unit Outdoor unit ES w valve N N QN Gas side 1 ln 2 1 Confirm that both the 2 way and 3 way valves are 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 Connect the charge hose with the push pin of handle lo to the 3 way valves gas service port 3 Air purging of the charge hose Open the handle Lo valve of the manifold valve slightly to purge air from the charge hose for 5 seconds and then close it quickly 4 Set the 2 way valve to the close position 5 Operate the air conditioner at the cooling cycle and stop it when the gauge indicates 0 1MPa 6 Set the 3 way valve to the closed position immediately Do this quickly so that the gauge ends up indicating 0 3 to 0 5 Disconnect the charge set and tighten the 2 and 3 way valve s stem nuts Use a torque wrench to tighten the 3 way valves service port cap to a torque of 18N m Be sure to check for gas leakage 24 2 Air purging by refrigerant Indoor unit 1273 Gas side w Ch
29. iform main PCB are integrated together Yes Ghock wine Refer to the solution of fan speed has been out of control properly or the outdoor unit NO malfunction Find out the cause ventilation is good i and have it solved Yes v Check if the compressor resistance No gt Replace the compressor values are uniform Yes Y Replace the outdoor main PCB if the main PCB and IPM are separate 99 9 2 8 Over voltage too low voltage protection diagnosis and solution P1 lt Check if the power supply is Disconnect the unit with power supply and try to restart the unit when power supply gets normal Correct the connections or replace the wires No normal Yes Check if all the connections and wires are good Yes y Power on and when the unit is in standby check if the voltage between P and N is around DC 310V 340V or 380V For different kinds of units the voltage differs No Consult with technical engineer to get definite value Then start up the unit measure the voltage between P and N Is it in 220V 400V Yes Replace outdoor PCB Replace the IPM board if it is separate with main PCB 60 9 2 9 High temperature protection of compressor top diagnosis and solution P2 Check if the air flow system of indoor and outdoor units are
30. ing mode 41 Defrosting action For MUPR 09 H4 and MUPR 12 H4 on Compressor off on 4 way valve off on Outdoor fan off 10s 10s _ no longer than 10m _ 308 20 For MUPR 18 H4 MUPR 24 H4 on Compressor off on 4 way valve off on Outdoor fan off 10s 10s no longer than 10m _ 30s xx 20 42 8 4 3 5 Evaporator temperature protection T2 i of TEstop Decrease TEdown TEnorm Resume Off Compressor stops Decrease Decrease the running frequency to the lower level Hold Keep the current frequency No limitation for frequency 8 4 4 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 cooling heating or fan only mode according to AT AT 1T1 Ts Indoor fan will run at auto fan of the relevant mode The louver operates same as in relevant mode If the machine switches mode between heating and cooling the compressor will keep stopping for 15 minutes and then choose mode according to T1 Ts If the setting temperature is modified the machine will choose running function again 8 4 5 Drying mode 8 4 5 1 Indoor fan speed is fixed at breeze and can t be changed The louver angle is the same as
31. ld not be pulled out or damaged during operation There is risk of fire or electric shock B Do not place anything on the power cable There is risk of fire or electric shock B Donot plug or unplug the power supply plug during operation There is risk of fire or electric shock B Do not touch operation the product with wet hands B Do not place a heater or other appliance near the power cable There is risk of fire and electric shock B Donot allow water to run into electrical parts It may cause fire failure of the product or electric shock B 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 B When flammable gas leaks turn off the gas and open a window for ventilation before turn the product on B ifstrange sounds or smoke comes from product turn the breaker off or disconnect the power supply cable There is risk of electric shock or fire B 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 4 B Donot open the inlet grill of the product during operation Do not touch the electrostatic filter if the unit is so equipped There is risk of physical injury electric shock or product failure
32. lowest fan speed when setting temp is achieved 3 Indoor fan keeps at setting fan speed when setting temp is achieved 5 Louver position memory function Press ADJUST button choose F5 Press MODIFY button Press ADJUST to choose 1 or 2 3 Press CONFIRM button at last 1 Louver position is not memorized 2 Louver position is active even when power off and AC shuts off 3 Louver position is active even when AC shuts off while Inactive when power off 47 8 4 13 Point check function Press the LED DISPLAY button of remote controller three times Swing button for some remote controllers and then press AIR DIRECTION button three times the air conditioner will enter the information enquiry status After that press the LED DISPLAY button to enquiry the next one information and press the AIR DIRECTION button to enquiry the last one information Table Enquiry Displaying Display value Meaning Remark information code 1F 1E 1d 1 25 24 23 22 21 2 1 All the displaying temperature is T2 1b 1A actual value T3 2 All the temperature is C no T4 matter what kind of remote controller is used TP 3 T1 T2 T3 T4 T2B display Targeted TP display range 20 130 Frequency 4 Frequency display range Actual 0 159 4 Frequency 5 If the actual value exceeds the range it will display the maximum Indoor f
33. n on the product Corrosion particularly on the condenser and evaporator fins could cause product malfunction or inefficient operation 5 gt Operational B not expose skin directly to cool air for long time Do not sit in the draft B Donotuse 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 B Donot block the inlet or outlet of air flow B Use a soft cloth 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 B Do not touch the metal parts of the product when removing the air filter They are very sharp B Do not step on or put anything on the product outdoor units B 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 Do not insert hands or other objects through air inlet or outlet while the product is operated B X Donotdrink the water drained from the product B Usea firm stool or ladder when cleaning or maintaining the product Be careful and avoid personal injury B Replace the all batteries in the remote control with new ones of the same type Do not mix old and new batteries or different types of batteries There is risk of
34. ng the setting time 44 8 4 7 3 Timer off The machine will turn off automatically when reaching the setting time 8 4 7 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 7 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 7 6 The timer function 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 7 7 The setting time is relative time 8 4 8 Sleep function mode 8 4 8 1 Operation time in sleep mode is 7 hours After 7 hours the AC quits this mode and turns off 8 4 8 2 Operation process in sleep mode is as follow When cooling the setting temperature rises 1 C be lower than 30 every one hour 2 hours later the setting temperature stops rising and indoor fan is fixed as low speed When heating the setting temperature decreases 1 C be higher than 17 every one hour 2 hours later the setting temperature stops rising and indoor fan 15 fixed as low speed Anti cold wind function has the priority 8 4 8 3 Timer setting is available 8 4 8 4 When user uses timer off function in sleep mode or sleep function in
35. nt need Fault temp Operation in cooling Operation in heating mode sensor drying and fan only mode T Run supposed 1 26 Run supposed 1 26 medium fan speed high fan speed T2 Normal During the first 1 minute of compressor operation indoor fan shuts off After that indoor fan runs at medium fan speed for 1 minute and then resume to the setting fan speed Run with compressor 3 minutes defrosting every 40 minutes when 4 lt 7 2 frequency x F14 minutes defrosting every 90 minutes when 4 gt 7 C Run supposed 4 50 Run supposed T4215 Run supposed 4 50 Run supposed T4215 8 3 9 Refrigerant leakage detection This function is only active in cooling mode It can better prevent the compressor being damaged by refrigerant leakage or compressor overload Open condition Define the evaporator coil temp T2 of the compressor just starts running as Tcool In the beginning 5 minutes after the compressor starts up if T2 Tcool 2 C does not keep continuous 4 seconds and this situation happens 3 times the display area will show EC and AC will turn off 8 3 10 Zero crossing detection error protection only for MUPR 09 H4 MUPR 12 H4 and MUPR 24 H4 If AC detects time interval is not correct for continuous 2405 the unit will stop and the LED will display the failure The correct zero crossing signal time interval should be between 6 13ms 31 8 4 Operation Modes and Functions 8 4 1 Fan mode
36. obstructed No Y Turn off the power supply and turn it on 10 minutes later Yes v Check if the unit can Yes Clear up the air inlet and outlet or the heat exchanger of indoor and outdoor units Check if all the connection especially start normally Yes Y Check if the refrigerant NO the connection of OLP Over Load Protector sensor is good Yes Y Measure the resistance between the two ports of charge volume is normal Yes y Refrigerant system is blocked such as capillary or welded point of pipes the OLP Is it zero No Correct the connection No Replace the OLP y Yes Replace the outdoor control PCB Recharge the correct refrigerant volume 61 9 2 10 Inverter compressor drive error diagnosis and solution P4 Check if the wiring between main PCB and compressor connected by Correct the connection or Yes replace the wires and error and if the wires and connectors connectors are broken Y Correct the installation Check if the IPM installed correctly No tighten the screws and apply silicon grease Yes v IPM continuity check Check if the Replace the IPM board or replace IPM terminal resistance values are No the main
37. onnector Measure the resistance of U V U W V W If the resistance is not equal to each other the fan motor must has problems and need to be replaced Otherwise go to step 2 Index2 1 Indoor AC Fan Motor Power on and set the unit running in fan mode at high fan speed After running for 15 seconds measure the voltage of pin1 and pin2 If the value of the voltage is less than 100V 208 240V power supply or 50V 115V power supply the PCB must has problems and need to be replaced Input Terminal Red 1 Black 2 White 3 55 2 Indoor or Outdoor Fan Motor control is in fan motor Power on and when the unit is in standby measure the voltage of pin1 pin3 pin4 pin3 fan motor connector If the value of the voltage is not in the range showing in below table the PCB must has problems and need to be replaced NO Colo Signal Voltage 1 Red VeVm 280V 38V e Be FG HN 56 9 2 5 Open circuit or short circuit of temperature sensor diagnosis and solution E4 E5 F1 F2 F3 Check the connections between temperature sensor and PCB Are the connections good No Correct the connections Yes Y Check the resistance value of the sensor table1 Yes Replace indoor or outdoor PCB and table 2 is it normal x No Replace the sensor check if the problem happen again
38. or is running the indoor fan is controlled as below 39 0 3 E a 1 1 T E i im If the compressor stops caused by the room temperature rising the indoor fan will be forced to run 127 seconds with breeze During this period the anti cold wind is disabled Auto fan action in heating mode T1 Ts d 0 0 1 ao 17 4 i x H L 0 6 L T H L 0 6 L 6 0 H L 0 8 L 6 5 H 8 4 3 4 Defrosting mode Condition of defrosting If any one of the following items is satisfied will enter the defrosting mode After the compressor starts up and keeps running mark the minimum value of T3 from the 10th minutes to 15th minutes as T30 1 If the compressor cumulate running time is up to 29 minutes and T3 T30SUBT3ONE T30 2 If the compressor cumulate running time is up to 35 minutes and T3 TCDI2 T30SUBT3TWO T30 3 If the compressor cumulate running time is up to 29 minutes and T3 for 3 minutes 4 compressor cumulate running time is up to 120 minutes and T3 15 40 Condition of ending defrosting If any one of the following items is satisfied the defrosting will finish and the machine will turn to normal heating mode T8rises to be higher than 1 keeps to be higher than 2 for 80 seconds machine has run for 10 minutes in defrost
39. ormal resistance value Red Black N Several MO 65 ASK FOR MORE INFORMATION Phone 93 446 27 80 Fax 93 456 90 32 eMail mundoclima salvadorescoda com TECHNICAL ASSISTANCE Phone 93 652 53 57 Fax 93 635 45 08
40. ositive value Vs is the voltage between N and S of outdoor unit The red pin of No multimeter connects with N port the black pin of multimeter connects with S port Yes Y v Is the wiring to the outdoor main Is the wiring to the indoor main PCB connected correctly PCB connected correctly Yes Yes Y Y Change the outdoor main PCB Change the indoor main PCB Power on Is the error extinguished Power on Is the error extinguished NO No v v Change the indoor main PCB Change the outdoor main PCB 52 9 2 3 Zero crossing detection error diagnosis and solution E2 Check if the connections and No Correct the connections Turn on the power supply is normal unit when the power supply is good Yes v Indoor main PCB is defective Replace indoor main PCB 9 2 4 Fan speed has been out of control diagnosis and solution E3 F5 Shut off the power supply and turn it on 5 seconds later Is it still displaying the error code Yes Y Find out the cause and have it solved For example check whether the fan is blocked or the bearing gt he unit operates normally Shut off the power supply rotate the fan by hand No Does it rotate properly P
41. r electrical work contact the dealer seller a qualified electrician or an authorized service center Do not disassemble or repair the product there is risk of fire or electric shock B Always ground the product There 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 B Always install a dedicated circuit and breaker Improper wiring or installation may cause fore or electric shock B Use the correctly rated breaker of fuse There is risk of fire or electric shock B Do not modify or extend the power cable There is risk of fire or electric shock B Donotinstall 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 condenser and evaporator B For installation always contact the dealer or an authorized service center B 4 Donotinstall the product on a defective installation stand B Be sure the 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 B 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 B Take care to ensure that power cable cou
42. refrigerant after running the system for many years 23 6 6 Re installation while the indoor unit need to be repaired 24 6 7 Re installation while the outdoor unit need to be 26 T Operation Characteristics uiri 28 sp EICCIFORIC TUMCTION 522 453 u M 29 S TADDIGVIBUOTI 29 9 2 Display D LE 29 G 02000 12016401011 522 52245 44224125 8854 45 844 Een M anan 30 8 4 Operation Modes and nns nnn nnns 32 9 TROUDICSIOO Meme rc 50 9 1 Unit Error DISDIAY uuu 2 avus a a 50 9 2 Diagnosis snc etl 51 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 B Incorrect operation due to ignoring instruction will cause harm or damage B Before service the unit be sure to read this service manual at first 1 2 Warning Installation B Donotuse a defective or underrated circuit breaker Use this appliance on a dedicated circuit There is risk of fire or electric shock B Fo
43. s nuts and the service port cap Be sure to use a torque wrench to tighten the service port cap to a torque 18N m Be sure to check the gas leakage 21 3 Adding refrigerant if the pipe length gt 5m Indoor uni Y Liquid side 2wwy a 3 way valve f 1 X JAN Ha CIRA Charging cylinder 5 Electronic scale Procedure 1 Connect the charge hose to the charging cylinder open the 2 way valve and the 3 way valve 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 the 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 Put the charging cylinder onto the electronic scale and record the weight 4 Operate the air conditioner at the cooling mode 5 Open the valves Low side on the charge set and charge the system with liquid refrigerant 6 When the electronic scale displays the proper weight refer to the table disconnect the charge hose from the 3 way valve s service port immediately and turn off the air conditioner before disconnecting the hose 7 Mount the valve stem caps and the service port Use torque wrench
44. sor will not limit the frequency and resume to the former frequency 8260 C for 5 seconds the compressor will stop until 13 52 8 4 2 5 Evaporator temperature protection 2 0 the compressor will stop and restart when 2 gt 5 T2 lt 4 the compressor frequency will be limited and decreased to the lower level 4 C lt T2 lt 7 the compressor will keep the current frequency 227 the compressor frequency will not be limited 36 8 4 3 Heating Mode 8 4 3 1 Compressor running rules maximum operation frequency of the compressor after starting submits to the following rule T4 1 34 33 28 Fmax T4FREHEATMAX1 27 25 24 Fro TAFREHEATNS i Fmax TAFREHEATMAX5 6 is Fmax TAFREHEATMAX7 Fmax TAFREHEATMAX8 1 Fmax T4FREHEATMAX9 0 Fmax F21 3 4 Fmax F22 27 8 Fmax F23 3 12 Fmax F24 y 15 16 Fmax F25 3 Meanwhile the maximum frequency is limited by the indoor fan speed Indoor fan speed Maximum frequency High speed 8 degree heating turbo function Medium speed FHeatMaxMidFan Low speed sleep mode FHeatMaxLowFan Silent mode Fixed at F3 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 min
45. st the compressor running frequency to protect the system In the first 10 seconds after power on this protection is inactive When this protection happens it will last 3 minutes and then the PCB will detect the power supply voltage again 46 8 4 12 Compatible with the new adjustment control RG521 Only for installers Through RG521 controller five function parameters of air conditioners can be adjusted immediately There is no need to change the chip anymore 1 Auto restart function Press ADJUST button choose F1 Press MODIFY button Press ADJUST Then choose ON or OFF button to active the auto restart function or shut off the function Press CONFIRM button at last 2 Temp compensation Press ADJUST button choose F2 Press MODIFY button Press ADJUST to choose the temp value 0 6 Press CONFIRM button at last 3 Anti cold wind function Press ADJUST button choose Press MODIFY button Press ADJUST to choose 1 or 2 Press CONFIRM button at last 1 intelligent defrosting mode 2 common defrosting mode 4 Indoor fan speed of when setting temp is achieved Press ADJUST button choose F4 Press MODIFY button Press ADJUST to choose 1 or 2 or 3 Press CONFIRM button at last 1 Indoor fan stops when setting temp is achieved 2 Indoor fan keeps at
46. to tighten the service port cap to a torque of 18N m Be sure to check for gas leakage 22 6 5 Adding refrigerant after running the system for many years ume A teda el 2 ineo ure alti 4 Outdoor unit C 25 2 way RE Check valve Pe PETS 1 7 A 2 x j v Charging cylinder Electronic scale Procedure 1 Connect the charge hose to the 3 way service port open the 2 way valve and the 3 way valve Connect the charge hose 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 Put the charging cylinder onto the electronic scale and record the weight 4 Operate the air conditioner at the cooling mode 5 Open the valves Low side on the charge set and charge the system with liquid refrigerant 6 When the electronic scale displays the proper weight refer to the gauge and the pressure of the low side disconnect the charge hose from the 3 way valve s service port immediately and turn off the air conditioner before disconnecting the hose 7 Mount the valve stem caps and t
47. utes the frequency limitation is active 7 minutes later the compressor running frequency will be controlled as below 1 F 5 0 J 45 I 44 0 H 3 5 G 3 0 425 42 0 D 415 41 0 40 5 While the zones of A B C are corresponding to different compressor running frequency 0 as default Note When T1 Ts keeps in the same temp zone for minutes the compressor will run as the below rules A Increase the frequency to 3 grade higher until to FREMAX B E Increase the frequency to 2 grade higher until to FREMAX F G Increase the frequency to 1 grade higher until to FREMAX H Keep the current frequency l Decrease the frequency to the 1 grade lower until to F1 J Run at F1 for 1h if T1 Ts AT gt 6 the compressor will stop 38 Meanwhile the compressor running frequency is limited by the current T4 1 HeatT4Zone4 15 14 HeatTA4Zone3l 9 0 HeatT4Zone2 6 0 5 0 HeatT4Zone1 8 4 3 2 Outdoor fan running rules Heating 14 A E 21 E 19 18 16 15 13 12 10 A 8 4 3 3 Indoor fan running rules In heating mode indoor fan can be selected as high medium low auto and silent The anti cold wind function is preferential The running rules of anti cold wind function depend on both T1 and T2 that is more comfortable control When the compress
48. wise 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 Then remove the charge hose from the 3 way valve 8 Fully open the 2 way valve and 3 way valve and securely tighten the cap of the 3 way valve 20 2 Air purging by refrigerant i p ME j side valve 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 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 on the 2 way valve 4 Check the gas leakage Check the flare connections for gas leakage 5 Discharge the refrigerant Close the valve on the charging cylinder and discharge the refrigerant by loosening the flare nut on the 2 way valve approximately 45 until the gauge indicates 0 3 to 0 5 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 stem
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