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Haier HSU-12H03/R(DB) [77/131] Thermistor or related abnormality indoor unit
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7.4.1Thermistor or Related Abnormality (indoor unit)
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the temperatures detected by the thermistors are used to determine
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hermistor errors
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when the thermistor input is more than 4.92V or less than 0.08V during compressor
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operation.
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The values vary slightly in some models
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Faulty connector connection
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Faulty thermistor
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Faulty PCB
Troubleshooting
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Be sure to turn off power switch before connect or disconnect connector, or
else parts damage may be occurred.
Thermistor resistance check method:
Remove the connector of the thermistor on the PCB, and measure the resistance of thermistor using
tester.The relationship between normal temperature and resistance is shown in the value of indoor
thermistor.
notes:
E1: Room temperature sensor failure
E2: Indoor heat-exchange sensor failure
Thermistor resistance check
Is it normal?
Yes
NO
Replace the thermistor
Yes
Replace the indoor unit PCB
Is it normal?
Correct the connection
NO
Check the connector connection.
Demastic Air Conditioners
+6809,12H03/R(DB)
System Diagnosis
74
Содержание
- Caution in repair 4
- Introduction 4
- Safety cautions 4
- Warning 4
- Caution 5
- Domestic air conditioner 5
- Hsu 09 12h03 r db introduction 5
- Warning 5
- Caution 6
- Domestic air conditioner 6
- Hsu 09 12h03 r db introduction 6
- Inspection after repair 6
- Warning 6
- Domestic air conditioner 7
- Hsu 09 12h03 r db introduction 7
- Icon type of information description 7
- Icons are used to attract the attention of the reader to specific information the meaning of each icon is described in 7
- The table below 7
- Using icons 7
- Using icons list 7
- Cautions regarding products after repair 8
- Domestic air conditioner 8
- Hsu 09 12h03 r db introduction 8
- Warning 8
- Outdoor unit 14
- Mode wind volume or whether it is under forceful running condition the modification of wind volume is only limited within the switch between weak and medium of wind volume when it is under heating mode modification index table for set temperature 16
- The set temperature can be modified according to the unit s operation 16
- Whentr ts 3 compressor operates frequency under 45hz and outdoor fan operates by off and on 23
- B25 50 4200k 3 28
- Domestic air conditioner 28
- Hsu 09 12h03 r db functions and control 28
- Indoor unit 28
- R25 23k 3 28
- Room sensor 28
- Value of thermistor 28
- Domestic air conditioner 29
- Hsu 09 12h03 r db functions and control 29
- Domestic air conditioner 30
- Hsu 09 12h03 r db functions and control 30
- Domestic air conditioner 31
- Hsu 09 12h03 r db functions and control 31
- B25 50 3700k 3 32
- Domestic air conditioner 32
- Hsu 09 12h03 r db functions and control 32
- Pipe sensor 32
- R25 10k 3 32
- Domestic air conditioner 33
- Hsu 09 12h03 r db functions and control 33
- Domestic air conditioner 34
- Hsu 09 12h03 r db functions and control 34
- Domestic air conditioner 35
- Hsu 09 12h03 r db functions and control 35
- Domestic air conditioner 36
- Hsu 09 12h03 r db functions and control 36
- Humidity sensor 36
- Temperature humidity characteristics of hsu 07 for reference 36
- Ambient sensor suction sensor defrosting sensor 37
- B25 50 3700k 3 37
- Domestic air conditioner 37
- Hsu 09 12h03 r db functions and control 37
- Outdoor unit 37
- R25 10k 3 37
- Domestic air conditioner 38
- Hsu 09 12h03 r db functions and control 38
- Domestic air conditioner 39
- Hsu 09 12h03 r db functions and control 39
- Domestic air conditioner 40
- Hsu 09 12h03 r db functions and control 40
- B25 80 4450k 3 41
- Discharging sensor 41
- Domestic air conditioner 41
- Hsu 09 12h03 r db functions and control 41
- R80 50k 3 41
- Domestic air conditioner 42
- Hsu 09 12h03 r db functions and control 42
- Domestic air conditioner 43
- Hsu 09 12h03 r db functions and control 43
- Domestic air conditioner 44
- Hsu 09 12h03 r db functions and control 44
- System configuration 45
- Cautions 46
- Contain no fluorochloric hydrocarbon 46
- Disposal of the old air conditioner 46
- Disposal of the packaging of your new air conditioner 46
- Instruction 46
- Safety instructions and warnings 46
- Cautions 47
- Specifications 47
- The machine is adaptive in following situation 47
- Caution 48
- Cautions 48
- Installation 48
- Safety instruction 48
- Warning 48
- Caution 49
- Cautions 49
- Domestic air conditioner 49
- Hsu 09 12h03 r db system configuration 49
- Warning 49
- Indoor unit 50
- Outdoor unit 50
- Parts and functions 50
- Domestic air conditioner 51
- Hsu 09 12h03 r db system configuration 51
- Lock display 14 swing up down display 15 sleep display 16 health display 51
- Low hi med auto 51
- Operation mode display 51
- Parts and functions 51
- Timer on display 12 fan speed display 51
- Parts and functions 52
- Cool operation 53
- Display board 53
- Operation 53
- Remote controller 53
- Auto operation 54
- Display board 54
- Fan speed selection 54
- Operation 54
- Remote controller 54
- Select operation mode 54
- Select temp setting 54
- Unit start 54
- Unit stop 54
- Display board 55
- Health operation 55
- Operation 55
- Remote controller 55
- Display board 56
- Dry operation 56
- Fan speed selection 56
- Operation 56
- Remote controller 56
- Select operation mode 56
- Select temp setting 56
- Unit start 56
- Unit stop 56
- About fan operation 57
- Display board 57
- Fan operation 57
- Fan speed selection 57
- Operation 57
- Remote controller 57
- Select operation mode 57
- Unit start 57
- Unit stop 57
- Fan speed selection 58
- Heat operation 58
- Operation 58
- Remote controller 58
- Select operation mode 58
- Select temp setting 58
- Unit start 58
- Unit stop 58
- Air flow direction adjustment 59
- For each press of button air flow direction on remote controller displays as follows according to different operation modes 59
- For each press of button remote controller displays as follows remote controller 59
- Left and right air flow direction 59
- Note when restart after remote turning off the remote controller will automatically memorize the previous set swing position 59
- Operation 59
- Remote controller 59
- Remote controller cool dry fan 59
- Remote controller heat 59
- Status display of air sending 59
- The horizontal louvers will swing according to the above positions 59
- The vertical flap will swing according to the above positions 59
- Up and down air flow direction 59
- Display board 60
- Operation 60
- Remote controller 60
- Sleep operation 60
- Cancel timer mode 61
- Confirming your setting 61
- Display board 61
- Operation 61
- Remote controller 61
- Time setting 61
- Timer on off operation 61
- Display board 62
- Operation 62
- Remote controller 62
- Time confirming for timer off 62
- Time setting 62
- Time setting for timer off 62
- Timer confirming for timer on 62
- Timer on off operation 62
- To cancel timer mode 62
- In power operation status 63
- Operation 63
- Power operation 63
- Remote controller 63
- Selecting of soft operation 63
- Soft operation 63
- To cancel power operation 63
- To cancel soft operation 63
- Health airflow operation 64
- Operation 64
- Press on off to starting 64
- Remote controller 64
- The cancel of the health airflow function 64
- The setting of health airflow function 64
- Emergency and test operation 65
- Emergency operation 65
- Operation 65
- Removal of the restriction of emergency or test operation 65
- Test operation 65
- For smart use of the air conditioner 66
- Maintenance 66
- Air filter cleaning 67
- Attach the filter 67
- Clean the filter 67
- Close the inlet grille 67
- Do not use the following for cleaning 67
- For smart use of the air conditioner 67
- Indoor body 67
- Maintenance 67
- Open the inlet grille by pulling it upward 67
- Remote controller 67
- Remove the filter 67
- Warning 67
- Close the inlet grille 68
- Common sense 68
- Detach the standard air filter 68
- Domestic air conditioner 68
- Hsu 09 12h03 r db system configuration 68
- Maintenance 68
- Open the lnlet grille 68
- Take the vc layer bacteria killing medium sets 68
- The installation and cleanout aip layer vc layer bacteria killing medium sets 68
- The installation of aip layer vc layer bacteria killing medium sets must be installed 68
- Maintenance 69
- To keep your air conditioner in good condition after season 69
- Before setting in high season 70
- Caution 70
- Cleaning the standard air filter 70
- Connecting the earthing cable 70
- Do not block the air inlet or outlet 70
- Earthing 70
- Maintenance 70
- No wet hand 70
- Plug in 70
- Before asking for service check the following first 71
- Trouble shooting 71
- Problem symptoms and measures 73
- Change the new module 74
- Compressor lack phase 19 74
- Compressor over current 14 74
- Compressor startup fault 7 74
- Fault display outdoor unit 74
- Outdoor eeprom fault 1 74
- Outdoor troubleshooting 74
- Pfc fault 24 74
- Power supply over or under voltagve fault 74
- Power supply over voltage 6 74
- Power supply under voltage 20 74
- U phase over current 3 74
- V phase over current 16 74
- W phase over current 17 74
- Error codes and description indoor display 76
- Thermistor or related abnormality indoor unit 77
- Humidity sensor or related abnormality 78
- Fan motor dc motor or related abnormality 79
- How to check fan motor dc 79
- Notes the a c is electrifying don t pull out or insert the terminals of the motor else the motor would be damaged 79
- 09 12 h03 r db system diagnosis 80
- Be sure to turn off power switch before connect or disconnect connector or else parts damage may be occurred 80
- Demastic air conditioners 80
- Replace indoor 80
- Replace indoor unit pcb 80
- Troubleshooting 80
- Ipm protection 81
- The ipm and outdoor pcb don t communicate or related abnormality 82
- 09 12 h03 r db system diagnosis8 83
- Demastic air conditioners 83
- Replace the outdoor ipm module with a new one 83
- Replace the outdoor mainboard with a new one 83
- Overheat protection for exhaust temperature 85
- 09 12 h03 r db system diagnosis 86
- Demastic air conditioners 86
- Exhaust temperature sensor is broken and needs be replaced 86
- The outdoor mainboard is damaged and needs be replaced 86
- The sensor is damaged replace the sensor with a new one 86
- Communication error between the indoor and 87
- Outdoor units 87
- 5 drain pan 107
- Domestic air conditioner 128
- Hsu 09 12h03 r db appendix 128
- Indoor unit 128
- Outdoor unit 128
- Ph 220v 50 60hz 128
- Wiring diagrams 128
- Domestic air conditioner 130
- Hsu 09 12h03 r db appendix 130
- Outdoor unit 130
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