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Troubleshooting

106

Electrical Control System

2.3 Outdoor unit malfunction

Display Malfunction

Protection

Outdoor EEPROM malfunction

Indoor / outdoor units communication error

Communication malfunction between IPM board and outdoor main board

Open or short circuit of T3 or T4 temperature sensor

Voltage protection of compressor

PFC module protection (For MOU-36HFN1-QRC4,MOU-36HFN1-QRC8)

Top temperature protection of compressor

High pressure protection (For 36k models)

Low pressure protection(For 36k models)

Current protection of compressor

Discharge temperature protection of compressor

High temperature protection of condenser

IPM module protection

High temperature protection of evaporator

In low ambient cooling mode, the LED displays

or alternative displays between running frequency

and “LC”(each displays 0.5s)

Содержание CCT 100HINVi

Страница 1: ...Service Manual MODEL CCT 50HINVi o CCT 70HINVi o CCT 100HINVi o...

Страница 2: ...Part 1 General Information 1 Part 2 Indoor Units Part 3 Outdoor Units Part 5 Electrical Control System The specifications designs and information in this book are subject to change without notice for...

Страница 3: ...General Information General Information 1 Part 1 General Information 1 Model Lists 2 2 External Appearance 3 2 1 Indoor Units 3 2 2 Outdoor Units 3 4 Features...

Страница 4: ...heating Ceiling floor Cooling and heating New Four way cassette compact Cooling and heating 1 2 Outdoor Units Universal Outdoor unit Model Compressor type Compressor Brand Matched indoor units CCT 50...

Страница 5: ...al Appearance General Information 3 2 External Appearance 2 1 Indoor Units Super slim cassette Duct Ceiling Floor Compact Four way cassette 2 2 Outdoor Units Single fan outdoor unit Double fan outdoor...

Страница 6: ...is standard for the indoor units 4 4 Standard auto restart function and follow me function 4 5 Slim cassette with standard remote controller wire controller and CCM for optional Med Duct and HESP duc...

Страница 7: ...Indoor Units 6 Indoor Units Part 2 Indoor Units Super Slim Cassette Type 7...

Страница 8: ...Indoor Units 7 Super Slim Cassette Type 1 Features 8 2 Dimensions 12 3 Service Space 13 4 Wiring Diagrams 14 5 Electric Characteristics 15 6 Sound Levels 16 7 Accessories 17 8 The Specification of Po...

Страница 9: ...g panel design more convenient to clean and maintain the filter optional Old Cassette New slim cassette Volume change Dimension 18K 24K 840 230 840 18K 24K 840 205 840 13 3 30K 840 300 840 30K 840 205...

Страница 10: ...tched on or off by remote controller When pressing the Clean Air button on the remote controller Ionizer will work and the indicator light on display board will shine New air intake I Io on ni iz ze e...

Страница 11: ...rve external air duct more flexible for the air supply 1 5 Built in draining pump Due to the improvement of structure more convenient to repair or replace the draining pump Built in draining pump to m...

Страница 12: ...wired controller is optional with error code indication function Better man machine conversation interface Undated structure design 4 way wire layout design no raised part at backside more convenient...

Страница 13: ...Dimensions 12 Indoor Units 2 Dimensions Model A H 18 205 235 24 205 235 36 245 275...

Страница 14: ...Service Space Indoor Units 13 3 Service Space 1000mm 1000mm 1000mm 1000m m...

Страница 15: ...Wiring Diagrams 14 Indoor Units 4 Wiring Diagrams CCT 50HINVi CCT 70HINVi CCT 100HINVi...

Страница 16: ...s Indoor Units 15 5 Electric Characteristics Model Indoor Unit Power Supply Hz Voltage Min Max MFA CCT50HINVi 50 220 240 198 254 15 CCT70HINVi 50 220 240 198 254 15 CC100HINVi 50 220 240 198 254 15 No...

Страница 17: ...Sound Levels 16 Indoor Units 6 Sound Levels P Microphone Model Noise Power dB A Noise level dB A H M L CCT 50HINVi 58 47 43 36 CCT70HINVi 59 48 44 40 CCT100HINVi 64 54 50 45...

Страница 18: ...pipe sheath 1 Out let pipe clasp 1 Remote controller Its Frame Remote controller Its Frame 1 Remote controller holder 1 Mounting screw ST2 9 10 C H 2 Remote controller manual 1 Alkaline dry batteries...

Страница 19: ...oltage 220 240V 50Hz 220 240V 50Hz POWER WIRING mm2 3 1 0 3 1 0 CIRCUIT BREAKER A 15 15 OUTDOOR UNIT POWER Phase 1 phase 3 phase Frequency and Voltage 220 240V 50Hz 380 420V 50Hz POWER WIRING mm2 3 2...

Страница 20: ...Field Wiring Indoor Units 19 9 Field Wiring...

Страница 21: ...Outdoor Units 52 Outdoor Units Part 3 Outdoor Units 1 Dimensions 53 2 Service Space 55 3 Piping Diagrams 56 4 Wiring Diagrams 57 5 Electric Characteristics 60 6 Operation Limits 61 7 Sound Levels 62...

Страница 22: ...Dimensions Outdoor Units 53 1 Dimensions Model Unit mm A B C D E F H CCT 50HINVo 842 560 335 360 312 324 695 CCT 70HINVo 895 590 333 355 302 313 862 CCT 100HINVo 990 624 366 396 340 354 966...

Страница 23: ...Service Space Outdoor Units 55 2 Service Space More than 60cm More than 30cm More than 60cm More than 200cm Air inlet Air inlet More than 30cm Air outlet Wall or obstacle Maintain channel...

Страница 24: ...Discharge temp sensor T4 Ambient temp sensor INDOOR OUTDOOR Electronic expansion valve CAPILIARY TUBE Accumulator CCT 100HINVo Low pressure switch High pressure switch LIQUID SIDE GAS SIDE HEAT EXCHAN...

Страница 25: ...Wiring Diagrams Outdoor Units 57 4 Wiring Diagrams CCT 50HINVo CCT 70HINVo...

Страница 26: ...Wiring Diagrams 58 Outdoor Units CCT 100HINVo...

Страница 27: ...ctric Characteristics 60 Outdoor Units 5 Electric Characteristics Model Outdoor Unit Hz Voltage Min Max CCT50HINVo 50 220 240V 198V 254V CCT70HINVo 50 220 240V 198V 254V CCT100HINVo 50 380 415V 342V 4...

Страница 28: ...ety 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 surf...

Страница 29: ...Sound Levels 62 Outdoor Units 7 Sound Levels H 1 0m Outdoor Unit Microphone Note H 0 5 height of outdoor unit Model Sound Power dB A CCT 50HINVo 65 CCT 70HINVo 69 CCT 100HINVo 70...

Страница 30: ...nits The gas side and liquid side stop values are both opened The air conditioner is pre heated by turning on the power 11 3 Test operation Set the air conditioner under the mode of COOLING by remote...

Страница 31: ...Electrical Control System LFIS B 1211 94 Electrical Control System Part 5 Electrical Control System 1 Electrical Control Function 95 2 Troubleshooting 104 3 Controller 133...

Страница 32: ...tion of compressor discharge When the compressor discharge temp is getting higher the running frequency will be limited as below rules If 102 T5 115 decrease the frequency to the lower level every 2 m...

Страница 33: ...fan 5 0 4 0 High Low 2 0 Medium 3 0 Ts 24 1 3 2 Cooling Mode 1 3 2 1 Outdoor PMW open angle control The unit is working in cooling mode with the EXV open 300P for 3 minutes then adjusting PMW open ang...

Страница 34: ...T3 52 the compressor will restart 1 3 3 Heating Mode 1 3 2 1 Outdoor PMW open angle control The unit is working in heating mode with the EXV open 300P for 3 minutes then adjusting PMW open angle accor...

Страница 35: ...tions time1 Time conditions Meet the following conditions 1 Running in heating mode 2 T4 3 3 Compressor is on 4 T3 TempEnterDefrost_ADD Cleared conditions Meet any one of the following conditions 1 Co...

Страница 36: ...Indoor fan Outdoor fan 480P PMV PMV running 8 mins with 300P Compressor 10S 30S TimeA 10S no longer than 10min Condition of ending defrosting If any one of following items is satisfied defrosting will...

Страница 37: ...e setting off time 1 3 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 1 3 6 6 The timer fu...

Страница 38: ...ction is initiated But when the indoor PCB receives signal which sent from remote controller every 3 minutes the buzzer will not respond When the unit is running with follow me function the PCB will c...

Страница 39: ...lower than 9 degree the digital display tube will show 9 If the temp is higher than 70 degree the digital display tube will show 70 If the indoor unit is not connected the digital display tube will s...

Страница 40: ...egree the digital display tube will show 0 If the temp is higher than 70 degree the digital display tube will show 70 If the capacity demand is 0 the digital display tube will show 0 If the indoor uni...

Страница 41: ...lanation on indoor display board A5 Duct OPERATION TIMER DEF FAN ALARM Temporary button Operation lamp Timer indicator Infrared signal receiver Alarm indicator PRE DEF indicator cooling and heating ty...

Страница 42: ...rt circuit of T2 temperature sensor X X X E3 4 Open or short circuit of T2B temperature sensor X X X E4 5 Full water malfunction X X X EE 6 Indoor EEPROM malfunction X X X E7 7 Outdoor unit malfunctio...

Страница 43: ...n of compressor E6 PFC module protection For MOU 36HFN1 QRC4 MOU 36HFN1 QRC8 P0 Top temperature protection of compressor P1 High pressure protection For 36k models P2 Low pressure protection For 36k m...

Страница 44: ...indoor unit 2 4 1 1 Open or short circuit of temperature sensor Check the connections between temperature sensor and PCB Are the connections good Correct the connections No Yes Yes Replace indoor or o...

Страница 45: ...Troubleshooting 108 Electrical Control System 2 4 1 2 Outdoor unit malfunction...

Страница 46: ...M chip is welded on PCB replace the PCB directly Otherwise check whether the EEPROM chip plugged in PCB well Yes No Yes Insert the EEPROM well Replace the indoor PCB Shut off the power supply and turn...

Страница 47: ...been out of control Only for the units used DC motor DC motor voltage input and output control chip is inside the motor DC motor voltage input and output NO Color Signal Voltage 1 Red Vs Vm 192V 380V...

Страница 48: ...qual to each other the fan motor must have problems and need to be replaced Otherwise go to step 2 2 Power on and when the unit is in standby measure the voltage of pin4 5 in feedback signal connector...

Страница 49: ...Troubleshooting 112 Electrical Control System 2 4 2 For the super slim cassette with up down panel 2 4 2 1 Communication error between indoor unit and up down panel 2 4 2 2 Up down panel is defective...

Страница 50: ...Troubleshooting Electrical Control System 113 2 4 2 3 Up down panel is not closed...

Страница 51: ...Troubleshooting 114 Electrical Control System 2 4 3 For the unit with TWINS function For the super slim cassette A5 duct 2 4 3 1 Communication failure between master unit and indoor unit...

Страница 52: ...Troubleshooting Electrical Control System 115 2 4 4 For the outdoor unit 2 4 4 1 E0 malfunction...

Страница 53: ...nce Increase the capacity of anti interference Yes Yes Replace the signal wire Yes Pull out and insert back No No Replace indoor PCB is the error distinguished Yes Replace the outdoor PCB No Check whe...

Страница 54: ...Troubleshooting Electrical Control System 117 2 4 4 3 E3 malfunction...

Страница 55: ...Troubleshooting 118 Electrical Control System 2 4 4 4 E4 malfunction...

Страница 56: ...supply Check whether the voltage of IPM board P and N is normal DC277 356V for 18K 24K 30KBtu h DC277 410V for 36K 48KBtu h Replace bridge rectifiers and then check whether the system can run normally...

Страница 57: ...36KBtu h Check the power supply Check whether the voltage range of P N on IPM module is normal DC 350 650V Replace bridge rectifiers and then check whether the system can run normally Replace IPM boa...

Страница 58: ...Troubleshooting Electrical Control System 121 2 4 4 7 E6 malfunction Only for MOU 36HFN1 QRC4 MOU 36HFN1 QRC8...

Страница 59: ...rigerant circulation volume is normal Whether abnormality is the same after gas charging Yes No No Reconnect and retest No Check refrigerant system such as clogging of capillary etc No Whether the con...

Страница 60: ...Troubleshooting Electrical Control System 123 2 4 4 9 P1 malfunction For 36k models...

Страница 61: ...Troubleshooting 124 Electrical Control System 2 4 4 10 P2 malfunction For 36k models...

Страница 62: ...Troubleshooting Electrical Control System 125 2 4 4 11 P3 malfunction...

Страница 63: ...harge temp is more than 115 C Check whether the wiring connection is right between compressor discharge temp sensor and PCB according to wiring diagrams Method Check whether the resistance of compress...

Страница 64: ...ge 1 Check whether the outdoor ambient temperature is higher than 50 No Judge 3 The refrigerant pipe is blocked Let the refrigerant out then use the high pressure nitrogen or refrigerant to blow pipe...

Страница 65: ...System 2 4 4 14 P6 malfunction For single phase units At first test the resistance between every two ports of U V W of IPM and P N If any result of them is 0 or close to 0 the IPM is defective Otherw...

Страница 66: ...e between main board and the IPM module is connected tightly Yes Connect it tightly check ok or not No No No Connect it well check ok or not Check whether the connecting line of the compressor is conn...

Страница 67: ...and the indoor fan is running normal No Check refrigerant system such as clogging of capillary etc No Clean the heat exchanger and the air outlet Reconnect and retest No Whether the connection is goo...

Страница 68: ...6 13059 76 1 34105 116 0 40060 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...

Страница 69: ...489 5 234 9 35 35 78 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...

Страница 70: ...ireless Remote Controller 3 1 1RG51Q1 BGE General Function for wireless remote controller Model RG51Q1 BGE Rated voltage 3 0V 2pieces of LR03 7 batteries Min voltage for sending signal of CPU 2 4V Eff...

Страница 71: ...air conditioner 8 FAN SPEED Fan speed will be selected in following sequence once pressing this button AUTO LOW MED HIGH 9 TIME ON For time ON setting Once pressing this button the time will increase...

Страница 72: ...tting SWING AIR DIRECTION Res et 13 1 Adjust Decrease the set temp Keeping pressing will decrease the temp with 1 per 0 5s 2 Adjust Increase the set temp Keeping pressing will increase the temp with...

Страница 73: ...ture and save energy This function is available on COOL HEAT or AUTO mode only NOTE While the unit is running under Energy saving mode it would be cancelled if press MODE FAN SPEED or ON OFF button 11...

Страница 74: ...ime you push the button the time moves forward by 1 hour If want to cancel the TIMER OFF then adjust the time of TIMER OFF as 0 0 4 CLOCK button Normally display the clock set currently display 12 00...

Страница 75: ...then the icon of LOCK disappears In the mode of LOCK all the buttons are invalid except for LOCK button 5 CLOCK display Usually display the clock set currently Press the button CLOCK for 4 seconds the...

Страница 76: ...E in indoor unit and fixing a infrared emitter whose anode and cathode connecting with A and B near the receiver in the Indoor Unit Switch Board then connecting the terminal 5v GND Run in the Switch...

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