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North American M2OC-18HRDN1-M, Руководство по обслуживанию

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6.4 Outdoor unit (M4OC-36HRDN1-M) 
 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 
 
 

 

Содержание M2OC-18HRDN1-M

Страница 1: ...RODUCTS LTD Tel 604 4308496 Fax 1 866 9034371 www northamericanhvac com Service Manual DC Inverter Multi Zone Split Wall Mounted Type Indoor Models MSV1I 09HRDN1 M MSV1I 12HRDN1 M Outdoor Models M2OC 18HRDN1 M M3OC 27HRDN1 M ...

Страница 2: ...Product features 2 Dimensions 3 Refrigeration cycle diagram 4 Operation limits 5 Indoor unit combination 6 Wiring diagram 7 Electric control functions 8 Troubleshooting Annex 1 Characteristic of temp sensor Annex 2 Reference data ...

Страница 3: ... The unit will decide the louver direction according to operation mode high med low breeze Restarting is for approx 3 minutes Prevent the water being frozen on evaporator by sensing the evaporator pipe temperature in cooling mode Room temperature sensor Pipe temperature sensor Indoor unit Operation by remote controller Sensing by room temperature Room temperature control Anti freezing control in c...

Страница 4: ...iency at operation mode Hydrophilic aluminum fin It is only operated in the heating operation mode except defrosting operation Anti rust cabinet Valve protection cover 4 way valve control Made from electrolytic zinc steel sheet and anti rust coated components Low noise air flow system Bird tail propeller fan makes the outdoor unit run more quietly Discharge pipe temperature protect Driving heating...

Страница 5: ...5 2 Dimensions 2 1 Vertu Series Indoor unit 9K 12K 2 2 Outdoor unit a M2OC 18HRDN1 M M3OC 27HRDN1 M Dimension Mode W H D 9K 795 270 165 12K 845 286 165 ...

Страница 6: ...6 b M4OC 36HRDN1 M ...

Страница 7: ...7 3 Refrigeration Cycle Diagram 3 1 Refrigeration circuit drawing of inverter quadplex type 3 2 Refrigeration circuit drawing of inverter trinary type ...

Страница 8: ...peration range Cooling mode Indoor temperature 17 Outdoor temperature 0 50 Heating mode Indoor temperature 30 Outdoor temperature 15 24 Dry mode Indoor temperature 10 Outdoor temperature 0 43 Liquid valve A Gas valve C EXV C 4 way valve Compressor Condenser Axial flow fan EXV B EXV A Gas valve A Gas valve B Liquid valve C Liquid valve B Evaporator Cross flow fan Indoor Unit Capillary A Capillary B...

Страница 9: ...M3OC 27HRDN1 M One unit Two unit Three unit 9 9 9 9 12 9 9 9 9 9 12 12 12 12 5 3 Indoor unit combination for M4OC 36HRDN1 M One unit Two unit Three unit Four unit 9 9 9 9 12 9 9 9 9 9 12 9 9 9 9 9 9 9 12 9 9 12 12 12 12 12 9 12 12 12 12 12 Note As the capacity of exceeding the standard mix of red colors identify ways not recommended to use ...

Страница 10: ...10 6 Wiring Diagram 6 1 Indoor unit 9k 12k ...

Страница 11: ...11 6 2 Outdoor unit M2OC 18HRDN1 M 6 3 Outdoor unit M3OC 27HRDN1 M ...

Страница 12: ...12 6 4 Outdoor unit M4OC 36HRDN1 M ...

Страница 13: ... AIR indication lamp Lights up when CLEAN AIR feature is activated and Ionizer can generate abundant anions to fill the room with refreshing and natural air PRE DEF indicator This indicator illuminates when the air conditioner starts defrosting automatically or when the warm air control feature is activated in heating mode TURBO indication lamp Lights up when select TURBO function on cooling opera...

Страница 14: ...switch in outdoor PCB Push the switch SW1 to check the states of unit when the unit is running The digital display tube will display the follow procedure when push SW1 each time Display Remark 1 Indoor unit capacity demand code 2 Outdoor unit running mode code Off 0 Cooling 1 Heating 2 3 Amendatory capacity demand code 4 Outdoor unit fan motor state Off 0 Low speed 1 High speed 2 5 Evaporator outl...

Страница 15: ...y Number of indoor unit 1 1 2 2 3 3 7 4 4Outdoor ambient temp Display Corresponding temp Display Corresponding temp Display Corresponding temp 15 7 5 50 10 80 25 16 7 51 10 5 81 25 5 17 6 5 52 11 82 26 18 6 53 11 5 83 26 5 19 5 5 53 11 5 84 27 20 5 54 12 85 27 5 21 4 5 55 12 5 86 28 22 4 56 13 87 28 5 23 3 5 57 13 5 88 29 24 3 58 14 89 29 5 26 2 59 14 5 90 30 27 1 5 60 15 91 30 5 28 1 61 15 5 92 3...

Страница 16: ...60 42 6 73 21 5 15 60 65 43 6 5 74 22 16 65 70 44 7 75 22 5 45 7 5 75 22 5 46 8 76 23 47 8 5 77 23 5 48 9 78 24 49 9 5 79 24 5 7 4 5Current of outdoor unit Display Corresponding mode 60 8 0A 65 8 5A 70 9 1A 75 9 6A 80 10 1A 85 10 7A 90 11 2A 100 12 3A 110 13 4A 120 14 5A 130 15 6A 140 16 7A 150 17 9A 200 24A 7 4 6 No 1 opening degree of electronic expansion valve Opening degree equals the display ...

Страница 17: ... Indoor LED displays E2 and can t return to normal operation automatically 7 5 8 Current protection when the current is more than X A the compressor stops and Outdoor LED diaplays P3 for 30 seconds and the unit will restart after 3 minutes X is 12 5A for 18K 1x2 unit is 14 5A for 27K 1x3 unit and is 20A for 36K 1x4 unit 7 5 9 Outdoor condenser high temperature protection Under cooling mode if T3 6...

Страница 18: ... of the indoor heat exchanger is the same as that of cooling mode 7 9Heating mode 7 9 1Indoor Fan actions at heating mode Indoor Fan can be set at HIGH MID LOW AUTO by using a remote controller but Anti cold wind function prevails Anti cold wind control function at heating mode Condition T Indoor exchanger temp Indoor fan speed Indoor exchanger temp up T 34 Off 34 T 37 Breeze 37 T 44 Low speed T 4...

Страница 19: ...Outdoor fan switches off d Indoor fan running according to anti cold wind function in heating mode 7 11Automatic operation mode The air conditioner automatically selects one of the following operation modes cooling heating or fan only according to the temp difference between room temp TA and set temp TS The temp can be adjusted between 17 30 C by remote controller TA TS Operation mode TA TS 1 Cool...

Страница 20: ...urs unit cancels this mode automatically and the unit turns off 7 14 6 Auto restart function In case of a sudden power failure this function automatically sets the unit to previous settings before the power failure when power returns 7 15 Mode conflict The indoor units can not work cooling mode and heating at same time Heating mode has a priority 7 15 1Definition Cooling mode Heating Mode Fan Off ...

Страница 21: ...V The voltage in P6 in outdoor PCB is high voltage about 310V 8 2 Troubleshooting for indoor unit Display LED STATUS E0 EEPROM error E1 Communication error between indoor and outdoor unit E2 Zero crossing examination error E3 Fan speed beyond control E5 Outdoor units temp sensor or connector of temp sensor is defective E6 Indoor units temp sensor or connector of temp sensor is defective P0 Inverte...

Страница 22: ...temp sensor is defective E5 Compressor volt protection E7 Communication error between outdoor IC and DSP P0 Compressor discharge temp protection P1 High pressure protection just for 36K 1x4 units P2 Low pressure protection just for 36K 1x4 units P3 Compressor current protection P4 Inverter module protection P5 Outdoor temp too low protection P6 Condenser high temperature protection P7 Compressor d...

Страница 23: ...ower supply turn on the unit with remote controller Does the unit work normally Check the wiring between indoor and outdoor unit Is the connection of L N S and GND good Is the GND connection on outdoor PCB good NO NO Reconnect and retest again Is the LED4 red on outdoor PCB bright and LED1 yellow blinking Replace outdoor e box Yes Yes The power supply for outdoor PCB is fail Check the wiring on ou...

Страница 24: ...e connector and reconnect Replace the sensor and check if E6 display again NO YES Replace the indoor PCB YES Is the outdoor temperature sensor connector and connection good Repair the connector and reconnect Replace the sensor and check if E5 display again NO YES Replace outdoor e box YES Is the indoor fan motor connector and connection good Repair the connector and reconnect Is voltage being appl...

Страница 25: ...ing the units NO YES Replace the outdoor e box Revise the power and retest Is voltage normal NO YES Is all connection good NO Revise the power and retest YES Is the wiring to compressor right YES Check the moduler if some components blow out or be failure YES Repair or replace the moduler YES Is it breakdown between P N P V P W N V N W or V W of inverter moduler YES Replace the moduler YES Check t...

Страница 26: ...nsor or connector of pipe temp sensor is defective Circuit or software error on indoor PCB Replace indoor PCB YES Does compressor operate Is the connection good Is refrigerant circulation volume normal NO NO Charge refrigerant Is abnormality the same after gas charging NO Check refrigerant system such as clogging of capillary etc Reconnect and retest NO YES Is protector normal Replace the protecto...

Страница 27: ...r or connector of pipe temp sensor is Is connection to connector of pipe temp sensor good Check the resistance of the temp sensor according to Annex 1 Repair connector No Yes Replace the sensor Is connection to connector of pipe temp sensor good Check the resistance of the temp sensor according to Annex 1 Repair connector No Yes Replace the sensor Is connection to connector of pipe temp sensor goo...

Страница 28: ...TUS E5 Compressor volt protection Yes Is connection to connector of pipe temp sensor good Check the resistance of the temp sensor according to Annex 1 Repair connector No Replace the sensor Is connection to connector of pipe temp sensor good Check the resistance of the temp sensor according to Annex 1 Repair connector No Yes Replace the sensor ...

Страница 29: ...ge is about 220V turn off the power supply to indoor unit and turn it on again after 1 minute Does the trouble occur again Check the voltage of secondary of T3 transformer in outdoor power board is this voltage 12 14V AC No Replace the outdoor power board ...

Страница 30: ...3 3v voltage in outdoor main board Power Board CN1 Purple wire and yellow GND Inverter module defective Rectifier circuit is bad connection or defective when the voltage in outdoor is abnormal D and N 310V DC No Yes No Yes Check the signal wires between outdoor PCBs is it connected good Check the IC6 IC7 at Outdoor power PCB Normally Input voltage 5V changeable Output voltage 5V changeable Outdoor...

Страница 31: ...ssor drive malfunction drive protection arose Check the resistance of compressor normally U and V is 1 ohm U and W is 1 ohm V and W is 1ohm Turn one indoor unit only Does the compressor start after 3 minutes Does the trouble occur again after compressor running some time No Yes No The compressor is defective Check the refrigerant circulation volume and pressure No The compressor is defective Yes I...

Страница 32: ...al Replace the outdoor power board If the problem comes to again check wingding resistance of inverter compressor is it right Replace inverter compressor Repair connector Yes No No Replace inverter compressor Repair connector If the problem comes to again check wingding resistance of inverter compressor is it 1 ohm Replace the outdoor power board Are the U V W connected to compressor and inverter ...

Страница 33: ...or pipe temp is more than 65 C the unit will stop and unit runs again when outdoor pipe temp less than 52 C Is the outdoor pipe temp more than 65 C Is the outdoor pipe temp sensor right according to the annex 1 Replace the outdoor main board No Yes Replace the outdoor pipe temp sensor No ...

Страница 34: ...52 3 1918 1 37 1988 26 9 5507 53 3 0707 0 35 2024 27 9 1245 54 2 959 1 33 3269 28 8 7198 55 2 8442 2 31 5635 29 8 3357 56 2 7382 3 29 9058 30 7 9708 57 2 6368 4 28 3459 31 7 6241 58 2 5397 5 26 8778 32 7 2946 59 2 4468 6 25 4954 33 6 9814 60 2 3577 7 24 1932 34 6 6835 61 2 2725 8 22 5662 35 6 4002 62 2 1907 9 21 8094 36 6 1306 63 2 1124 10 20 7184 37 5 8736 64 2 0373 11 19 6891 38 5 6296 65 1 9653...

Страница 35: ...60 150V AC P N DC 310V c Photo couple PC817 PC851 Control side 5V AC side 24V AC d S terminal and N changeable from 0 24V 2 Check the Diode Bridge component In wiring diagram rectifier Remark If this part is abnormal the LED will not light Multi meter Result Forward Resistance Backward Resistance _ Infinite Infinite 500 ohm Infinite 500 ohm Infinite ...

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