mundoclima H11 Series Page 64 Service Manual Download

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10.3.3.14 Lack phase failure of outdoor DC fan motor(EC72)

Check the fan three-phase

output for obvious open

circuit

Power off,then restart the unit

2 minutes later.Is it still

displaying the error code

The unit operates

normally

Check the wiring of fan

motor.Are all the connections

good?

Correct the connections

Check whether the three-

phase resistance of the fan is

symmetrical

Replace the fan motor

Yes

Replace the main PCB

Trobule is solved

Yes

Service manual

MUEX-

H11 series

Summary of Contents for H11 Series

Page 1: ...Service manual www mundoclima com CL21400 CL21407 MULTI INVERTER SERIE H11 R32...

Page 2: ...eet for installation 20 8 2 Connecting the cables 20 8 3 Pipe length and the elevation 20 8 4 Installation for the first time 21 8 5 Adding the refrigerant after running the system for many years 24 8...

Page 3: ...800x333x554 KSN140D21UFZ MUEX 36 H11 4 946x410x810 KTF310D43UMT MUEX 42 H11 5 946x410x810 KTF310D43UMT MUEX 18 H11 2 805x330x554 KSN140D58UFZ MUEX 21 H11 3 890x342x673 KSN140D58UFZ MUEX 27 H11 3 890x3...

Page 4: ...ents water from dripping 4 way valve control It is only operated in the heating operation mode except defrosting operation Outdoor unit Power relay control Hydrophilic aluminum fin Anti rust cabinet V...

Page 5: ...4 673 403 MUEX 36 H11 4 946 410 810 1034 673 403 MUEX 42 H11 5 946 410 810 1034 673 403 MUEX 14 H11 2 805 330 554 877 511 317 MUEX 18 H11 2 805 330 554 877 511 317 MUEX 21 H11 3 890 342 673 990 663 35...

Page 6: ...VALVE A HEAT EXCHANGE EVAPORATOR HEAT EXCHANGE CONDENSER Compressor 4 WAY VALVE COOLING HEATING T2 Evaporator temp sensor middle T1 Room temp sensor T3 Condenser temp sensor TP Discharge temp sensor T...

Page 7: ...utlet T2B B T2B C 4 3 Refrigeration circuit drawing of inverter 1 drive 4 type Service manual LIQUID VALVE A GAS VALVE A HEAT EXCHANGE EVAPORATOR HEAT EXCHANGE CONDENSER Compressor 4 WAY VALVE COOLING...

Page 8: ...sensor T3 Condenser temp sensor T4 Ambient temp sensor INDOOR OUTDOOR EXV A CAPILLARY TUBE EXV B LIQUID VALVE B GAS VALVE B EXV C LIQUID VALVE C GAS VALVE C EXV D LIQUID VALVE D GAS VALVE D EXV E LIQ...

Page 9: ...SOR U V W BLUE RED BLACK AC FAN CAPACITOR OPTIONAL AC FAN 5 3 CN 25 S B N A N B L B L L A N S A 5 6 CN 4 CN 2 CN 7 CN 3 ELECTRONIC EXPANSIVE VALVE TESTPORT CN 1 3 CN 1 1 CN 1 2 INDOOR PIPE OUT TEMP VA...

Page 10: ...9 4UZK 9 9 GXK YKJ OT UZNKX Z_VK UL SUJKRY NK_ JUT Z TKKJ ZU HK IUTTKIZKJ OT S RZO SUJKRY Service manual MUEX H11 series...

Page 11: ...10 MUEX 21 H11 3 MUEX 27 H11 3 Service manual MUEX H11 series...

Page 12: ...11 MUEX 27 H11 3 Service manual MUEX H11 series...

Page 13: ...12 MUEX 36 H11 4 Service manual MUEX H11 series...

Page 14: ...13 MUEX 42 H11 5 Service manual MUEX H11 series...

Page 15: ...7 12 18 7 18 12 12 6 4 Indoor unit combination for MUEX 27 H11 3 One unit Two unit Three unit 7 7 7 7 18 9 18 7 7 7 7 9 12 9 12 12 9 7 9 9 9 12 12 7 7 9 7 12 12 12 12 12 12 7 12 9 12 12 18 7 7 12 9 9...

Page 16: ...9 12 12 9 9 12 12 18 7 18 12 18 7 7 18 7 12 12 9 9 18 12 12 12 7 7 7 18 7 7 12 18 7 12 12 12 9 12 12 12 24 7 24 12 24 7 7 24 7 12 18 9 9 24 12 12 18 7 7 9 9 7 9 9 9 9 9 9 9 12 12 12 12 9 9 18 18 7 9 9...

Page 17: ...9 7 7 9 24 7 9 9 18 7 12 12 18 9 9 12 24 7 7 7 12 7 7 12 12 7 9 9 24 9 9 9 9 9 12 12 12 7 7 7 18 7 7 12 18 7 9 12 12 9 9 9 12 9 12 12 18 7 7 7 24 7 7 12 24 7 9 12 18 9 9 9 18 12 12 12 12 7 7 9 9 7 7 1...

Page 18: ...unit Model Noise Power dB A Noise level dB A MUEX 28 H11 4 69 61 MUEX 36 H11 4 68 63 MUEX 42 H11 5 70 63 MUEX 14 H11 2 65 56 MUEX 18 H11 2 65 54 MUEX 21 H11 3 66 58 MUEX 27 H11 3 67 58 H 1 0m Outdoor...

Page 19: ...nd switch 8 3 Pipe length and the elevation Maximum piping length and height difference 1 drive 2 1 drive 3 1 drive 4 1 drive 5 Max length for all rooms m 40 60 80 80 Max length for one IU m 25 30 35...

Page 20: ...Gas 9 52 3 8 4 12 7 1 2 1 8 4 Installation for the first time Air and moisture in the refrigerant system have undesirable effects as below Pressure in the system rises Operating current rises Cooling...

Page 21: ...re 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 tur...

Page 22: ...rge 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 sid...

Page 23: ...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...

Page 24: ...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 positio...

Page 25: ...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 aft...

Page 26: ...ct the vacuum pump to 3 way valve s service port 3 Evacuation for approximately one hour Confirm that the compound meter indicates 0 1Mpa 4 Close the valve Low side on the charge set turn off the vacu...

Page 27: ...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...

Page 28: ...n compressor operation the LED display the running frequency In defrosting mode The LED displays dF or alternative displays between running frequency and dF each displays 0 5s In compressor pre heatin...

Page 29: ...tal indoor units amendatory capacity demand 15 The frequency after the frequency limit 16 The frequency sending to compressor control chip 17 Indoor unit A evaporator outlet temperature T2BA If the te...

Page 30: ...Bit6 Frequency limit caused by voltage Bit5 Frequency limit caused by current Bit4 Reserve Bit3 Frequency limit caused by IPM Bit2 Frequency limit caused by T5 Bit1 Frequency limit caused by T3 Bit0...

Page 31: ...t connected the digital display shows 28 Indoor unit B evaporator temperature T2B 29 Indoor unit C evaporator temperature T2C 30 Indoor unit D evaporator temperature T2D 31 Indoor unit E evaporator te...

Page 32: ...emperature TR_out 57 Liquid pipe temperature TR_in 58 Water temperature of the water tank Tk 59 Backwater temperature of the water Tank TWH 60 Total outlet temperature of hydraulic module system after...

Page 33: ...T1C 25 Indoor unit D room temperature T1D 26 Indoor unit E room temperature T1E 27 Indoor unit A evaporator temperature T2A If the temperature is lower than 9 the digital display shows 9 If the temper...

Page 34: ...higher than 70 the digital display shows 70 If the indoor unit is not connected the digital display shows 49 F indoor unit room temperature T1F 50 F indoor unit evaporator temperature T2F 51 EXV open...

Page 35: ...7 Outdoor unit anti freezing protection When T2 4 for 250 seconds or T2 0 the indoor unit capacity demand will be zero and resume to normal when T2 8 and the time of protection is no less than 3 minu...

Page 36: ...s off T4 is be lower than 35 for 10s the AC will stop and display LP or PC 0L When compressor is on T4 is be lower than 40 for 10s the AC will stop and display LP or PC 0L When T4 is no lower than 32...

Page 37: ...rent protection For some units F0 O 1 Open or short circuit of T4 temperature sensor F1 O 2 Open or short circuit of T3 temperature sensor F2 O 3 Open or short circuit of T5 temperature sensor F3 O 4...

Page 38: ...nsor T2B is in open circuit or has short circuited for free match indoor units 6 times OFF EH 60 Indoor room temperature sensor T1 is in open circuit or has short circuited Service manual MUEX H11 ser...

Page 39: ...it coil outlet temperature sensor or connector of sensor is defective F4 No D Indoor unit coil outlet temperature sensor or connector of sensor is defective F5 No E Indoor unit coil outlet temperature...

Page 40: ...compressor lack phase protection PC 44 Outdoor unit zero speed protection PC 45 Outdoor unit IR chip drive failure PC 46 Compressor speed has been out of control PC 49 Compressor overcurrent failure P...

Page 41: ...EC 50 Open or short circuit of outdoor unit temperature sensor T3 T4 T5 Service manual MUEX H11 series 40...

Page 42: ...function IDU E0 EA EH 00 EH 0A Yes Replace the indoor main PCB Power off then restart the unit 2 minutes later EEPROM An electrically erasable programmable read only memory whose contents can be erase...

Page 43: ...ontroller Is all indoor unit display error code Turn off the allindoor units Is IPM power LED or operating LED lamp On Refer PIC2 Yes A Is all the wiring between terminal and Indoor PCB connect ok No...

Page 44: ...in PCB Self Check Power Operating Self Check Operating Pic 2 IPM or outdoor main PCB Pic 1 check the voltage of N to S Vs is it moving alternately between positive value and negative value Service man...

Page 45: ...PIC3 Main board LED when power on and unit standby PIC 4 check point button Press 1 time for check how many indoor units are connected Service manual MUEX H11 series 44...

Page 46: ...mple whether the fan is blocked or the screws which fix the fan are tighten Check the wiring of fan motor Are all the connections good Check the wiring of fan motor Are all the connections good No Yes...

Page 47: ...al Voltage 1 Red Vs Vm 192V 380V 2 3 Black GND 0V 4 White Vcc 13 5 16 5V 5 Yellow Vsp 0 6 5V 6 Blue FG 13 5 16 5V 2 Indoor DC fan motor control chip is inside fan motor Power on and when the unit is i...

Page 48: ...5 Water level alarm malfunction IDU EE If the water level switch is inserted well If the water level switch is inserted well No Insert the water level switch well Insert the water level switch well If...

Page 49: ...Correct the connection or replace the wirings Yes 10 3 1 8 Inverter compressor drive malfunction IDU P4 PC04 The trouble shooting is same with IPM module protection 10 3 1 9 Communication malfunction...

Page 50: ...ut your hands in front of the indoor air outlet YES Is there cool air blowing out from indoor air outlet Is it securely attached Replace the indoor PCB YES Check the T2 sensor YES Check system for lea...

Page 51: ...short circuited EC 52 Outdoor room temperature sensor T4 is in open circuit or has short circuited EC 53 Compressor discharge temperature sensor T5 is in open circuit or has short circuited EC 54 Eva...

Page 52: ...Check the signal wire between the IPM board and the main board is it connected good Reconnect and retry Is error still display Replace IPM board and then check whether the system can run normally Rep...

Page 53: ...door unit power supply whether the voltage between L L1 and N L2 is about 220 240VAC Check the power supply Check whether the voltage of IPM board P and N is normal DC277 356V for 18 27KBtu h DC277 41...

Page 54: ...e of P N on IPM module is normal DC277 356V for 18 27KBtu h DC277 410V for 36 42KBtu h No Check whether the inductance of PFC module is good If the inductance is good the resistance of the two ports i...

Page 55: ...minutes Is it within normal parameters Replace the fan motor Does a problem remain The unit is operating normally NO Shut off the power supply Rotate the fan by hand YES Does it turn easily Find the...

Page 56: ...ced DC motor voltage input and output NO Color Signal Voltage 1 Red Vs Vm 140V 380V 2 3 Black GND 0V 4 White Vcc 13 5 16 5V 5 Yellow Vsp 0 6 5V 6 Blue FG 15V 2 Indoor or outdoor DC Fan Motor control c...

Page 57: ...ture is higher than 50 Check whether the outdoor ambient temperature is higher than 50 No top the unit Stop the unit Yes heck if the outdoor unit ventilation is good Check if the outdoor unit ventilat...

Page 58: ...Whether the low pressure protector is broken heck whether the outdoor ambient temperature is too low Check whether the outdoor ambient temperature is too low No Stop the unit Stop the unit Yes pen fu...

Page 59: ...tem is ok Judge 2 Check whether the outdoor ambient temperature is higher than 50 No Stop the unit Yes Judge 3 Check whether the outdoor unit is bad ventilation No Make the outdoor unit ventilate well...

Page 60: ...ure the resistance value of compressor discharge temp sensor If the value is not normal is normal refer to the Appendix i i 2 Measure the resistance value of compressor discharge temp sensor If the va...

Page 61: ...entilation is good Check if the outdoor unit ventilation is good Yes Make the outdoor unit ventilate well Make the outdoor unit ventilate well Check whether the heat exchanger is dirty Check whether t...

Page 62: ...er the system can work normally Check whether the lines in E part box are connected tightly Yes Connect it tightly check ok or not No No Yes No Replace the bridge rectifiers Check whether the bridge r...

Page 63: ...more than 90 No Check if the refrigerant system is normal Repair the refrigerant system Replace the outdoor control PCB Yes Check if all the connection especially the connection of OLP Over Load Prot...

Page 64: ...inutes later Is it still displaying the error code The unit operates normally Check the wiring of fan motor Are all the connections good Correct the connections Check whether the three phase resistanc...

Page 65: ...No No No Replace the main PCB No Trobule is solved Yes 10 3 3 16 Outdoor unit IR chip drive failure PC45 Power off then restart the unit 2 minutes later Replace the inverter module PCB es Y 10 3 3 17...

Page 66: ...nit PCB board 5 seconds until LED display CE which mean this function is working Approximately 5 10 minutes after the switch is pressed the CE disappear the wiring piping error will be corrected and w...

Page 67: ...alue with a tester Temperature Sensors Room temperature T1 sensor Indoor coil temperature T2 sensor Outdoor coil temperature T3 sensor Outdoor ambient temperature T4 sensor Compressor discharge temper...

Page 68: ...3 41 5878 37 5 87359 77 1 29078 117 0 38991 2 39 8239 38 5 62961 78 1 25423 118 0 37956 1 37 1988 39 5 39689 79 1 21330 119 0 36954 0 35 2024 40 5 17519 80 1 17393 120 0 35982 1 33 3269 41 4 96392 81...

Page 69: ...75 8 084 115 2 422 4 222 8 36 34 32 76 7 82 116 2 357 3 211 4 37 32 94 77 7 566 117 2 294 2 200 7 38 31 62 78 7 321 118 2 233 1 190 5 39 30 36 79 7 086 119 2 174 0 180 9 40 29 15 80 6 859 120 2 117 1...

Page 70: ...sor checking Measure the resistance value of each winding by using the tester Position Resistance Value KSM135D23UFZ KTF235D22UMT KTF310D43UMT Blue Red 1 72 20 0 75 20 0 65 20 Service manual MUEX H11...

Page 71: ...istance value Red Black Several M Red Black Several M P N U N U V V W W Red 4 4 way valve 1 Power on use a digital tester to measure the voltage when the unit operates in cooling it is 0V When the uni...

Page 72: ...eck Disconnect the connectors Resistance to EXV coil Color of lead wire Normal Value Red Blue About 50 Red Yellow Brown Orange 6 5 4 3 2 1 Red Brown Blue Orange Yellow White Service manual MUEX H11 se...

Page 73: ...www mundoclima com C N POLES 249 P1 08013 BARCELONA SPAIN 34 93 446 27 80 SAT 34 93 652 53 57...

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