![Daikin ATX20JV1B [61/156] Caution for diagnosis 2](/img/pdf.png)
Daikin ATX20JV1B [61/156] Caution for diagnosis 2
![Daikin ATX20JV1B [61/156] Caution for diagnosis 2](/views2/1775210/page61/bg3d.png)
SiBE041010
Service Diagnosis 51
Part 6
Service Diagnosis
1. Caution for Diagnosis............................................................................52
1.1 Troubleshooting with LED ......................................................................52
2. Problem Symptoms and Measures .......................................................53
3. Service Check Function ........................................................................54
4. Troubleshooting ....................................................................................57
4.1 Error Codes and Description ..................................................................57
4.2 Indoor Unit PCB Abnormality .................................................................58
4.3 Freeze-up Protection Control or Heating Peak-cut Control....................59
4.4 Fan Motor (DC Motor) or Related Abnormality.......................................61
4.5 Thermistor or Related Abnormality (Indoor Unit)....................................63
4.6 Signal Transmission Error (between Indoor and Outdoor Unit) .............64
4.7 Unspecified Voltage (between Indoor and Outdoor Unit).......................65
4.8 Outdoor Unit PCB Abnormality...............................................................66
4.9 OL Activation (Compressor Overload) ...................................................67
4.10 Compressor Lock ...................................................................................68
4.11 DC Fan Lock ..........................................................................................69
4.12 Input Overcurrent Detection ...................................................................70
4.13 Four Way Valve Abnormality..................................................................71
4.14 Discharge Pipe Temperature Control.....................................................73
4.15 High Pressure Control in Cooling ...........................................................74
4.16 Compressor System Sensor Abnormality ..............................................75
4.17 Position Sensor Abnormality ..................................................................76
4.18 DC Voltage / Current Sensor Abnormality..............................................78
4.19 Thermistor or Related Abnormality (Outdoor Unit).................................79
4.20 Electrical Box Temperature Rise............................................................81
4.21 Radiation Fin Temperature Rise ............................................................83
4.22 Output Overcurrent Detection ................................................................85
4.23 Refrigerant Shortage ..............................................................................87
4.24 Low-voltage Detection or Over-voltage Detection..................................89
5. Check ....................................................................................................90
5.1 How to Check .........................................................................................90
Содержание
- Inverter pair 1
- Sibe041010 1
- Wall mounted type j series 1
- Heat pump 2
- Indoor units 2
- Inverter pair wall mounted type j series 2
- Outdoor units 2
- Table of contents 2
- Function of thermistor 5 3 control specification 6 3
- Functions 3
- Introduction v 3
- Main functions 4 3
- Part 1 list of functions 3
- Part 2 specifications 3
- Part 3 printed circuit board connector wiring diagram 3
- Part 4 function and control 3 3
- Part 5 operation manual 0 3
- Printed circuit board connector wiring diagram 3
- Specifications 3
- System configuration 1 2 operation manual 2 3
- Caution for diagnosis 2 4
- Check 0 4
- Indoor unit 01 4
- Part 6 service diagnosis 1 4
- Part 7 removal procedure 00 4
- Problem symptoms and measures 3 3 service check function 4 4 troubleshooting 7 4
- Others 39 5
- Outdoor unit 22 5
- Part 8 others 38 5
- Part 9 appendix 42 5
- Piping diagrams 43 5
- Wiring diagrams 45 5
- Cautions regarding safety of workers 6
- Introduction 6
- Safety cautions 6
- Warning 6
- Caution 7
- Warning 7
- Cautions regarding safety of users 8
- Warning 8
- Caution 9
- Warning 9
- Caution 10
- Icons are used to attract the attention of the reader to specific information the meaning of each icon is described in the table below 10
- Used icons 10
- Functions 11
- Part 1 list of functions 11
- Functions 12
- Functions sibe041010 12
- Holding functions no functions 12
- List of functions 12
- Part 2 specifications 13
- Specifications 13
- Hz 230 v 14
- Specifications 14
- Specifications sibe041010 14
- Hz 230 v 15
- Sibe041010 specifications 15
- Specifications 5 15
- Hz 230 v 16
- Specifications 16
- Specifications sibe041010 16
- Hz 230 v 17
- Sibe041010 specifications 17
- Specifications 7 17
- Part 3 printed circuit board connector wiring diagram 18
- Printed circuit board connector wiring diagram 18
- Indoor unit 19
- Printed circuit board connector wiring diagram 19
- Pcb 2 display pcb 20
- Pcb detail pcb 1 control pcb 20
- Printed circuit board connector wiring diagram 20
- Printed circuit board connector wiring diagram sibe041010 20
- Outdoor unit 21
- Pcb 2 main pcb 22
- Pcb detail pcb 1 filter pcb 22
- Printed circuit board connector wiring diagram 22
- Printed circuit board connector wiring diagram sibe041010 22
- Function of thermistor 5 3 control specification 6 23
- Main functions 4 23
- Part 4 function and control 23
- Additional control parameters 24
- Drawing of inverter the following drawing shows a schematic view of the inverter principle 24
- Forced cooling operation 24
- Frequency principle 24
- Frequency restrictions 24
- Initial settings 24
- Inverter principle to regulate the capacity a frequency control is needed the inverter makes it possible to vary the rotation speed of the compressor the following table explains the conversion principle 24
- Main control parameters the compressor is frequency controlled during normal operation the target frequency is set by the following 2 parameters coming from the operating indoor unit 24
- Main functions 24
- The difference between the room temperature and the target temperature 24
- The load condition of the operating indoor unit 24
- The target frequency is adapted by additional parameters in the following cases 24
- Comfortable air conditioning a fine adjustment is integrated to keep the room temperature constant 25
- Energy saving heating and cooling once the set temperature is reached the energy saving operation enables to maintain the room temperature at low power 25
- Even during extreme cold weather the high capacity is achieved it is maintained even when the outdoor temperature is 2 c 25
- For detail 25
- Forced cooling operation refer to forced operation mode on page 25
- Frequency limits the following functions regulate the minimum and maximum frequency 25
- Inverter features the inverter provides the following features 25
- Quick heating and quick cooling the compressor rotational speed is increased when starting the heating or cooling this enables to reach the set temperature quickly 25
- The regulating capacity can be changed according to the changes in the outdoor temperature and cooling heating load 25
- Airflow direction control 26
- Fan speed control for indoor units 27
- Detail the microcomputer automatically sets the temperature and airflow rate the difference between the room temperature at start up and the target temperature is divided into two zones then the unit operates in the dry mode with an appropriate capacity for each zone to maintain the temperature and humidity at a comfortable level 28
- Outline program dry operation removes humidity while preventing the room temperature from lowering since the microcomputer controls both the temperature and airflow rate the temperature adjustment and fan adjustment buttons are inoperable in this mode 28
- Program dry operation 28
- Zone a thermostat off 28
- Zone b zone b 28
- Zone c thermostat on 28
- Automatic operation 29
- Cooling dry 30
- Function and control 30
- Heating 30
- Main functions sibe041010 30
- The monitoring time has passed while the temperature difference is in the zone b cooling dry 10 minutes heating 10 seconds 30
- The operation turns on in any zones except a 30
- The system resumes from defrost control in any zones except a 30
- The temperature difference is in the zone a 30
- The temperature difference returns to the zone c after being in the zone a 30
- Thermostat control 30
- Thermostat control is based on the difference between the room temperature and the target temperature 30
- Thermostat off condition 30
- Thermostat on condition 30
- Cooling 31
- Detail the night set mode continues operation at the target temperature for the first one hour then automatically raises the target temperature slightly in the case of cooling or lowers it slightly in the case of heating this prevents excessive cooling in summer and excessive heating in winter to ensure comfortable sleeping conditions and also conserves electricity 31
- Function and control 21 31
- Heating 31
- Night set mode 31
- Outline when the off timer is set the night set mode is automatically activated the night set mode keeps the airflow rate setting 31
- Sibe041010 main functions 31
- Econo operation 32
- Detail when powerful button is pressed the fan speed and target temperature are converted to the following states for 20 minutes 33
- Ex powerful operation in cooling mode 33
- Inverter powerful operation 33
- Outline in order to exploit the cooling and heating capacity to full extent operate the air conditioner by increasing the indoor fan rotating speed and the compressor frequency 33
- Auto restart function 34
- Hot start function 34
- Indoor unit on off button 34
- Other functions 34
- Signal receiving sign 34
- Titanium apatite photocatalytic air purifying filter 34
- Function of thermistor 35
- Control specification 36
- Control specification sibe041010 36
- Detail there are following modes stop cooling includes drying heating include defrosting 36
- Function and control 36
- Mode hierarchy 36
- Note unless specified otherwise an indoor dry operation command is regarded as cooling operation 36
- Outline there are two modes the one is the normal operation mode and the other is the forced operation mode for installation and providing service 36
- Frequency control 37
- D signal 1 p control the 38
- D signal and is used for frequency command 38
- D signal the difference between the room temperature and the target temperature is taken as the 38
- D value and the q value of the indoor unit q value indoor unit output determined from indoor unit volume airflow rate and other factors 38
- D value is calculated in each sampling time 20 seconds and the frequency is adjusted according to its difference from the frequency previously calculated 38
- D value is large the frequency is increased 38
- D value is small the frequency is lowered when the 38
- D value when the 38
- For limiting lower limit frequency management is carried out only when the frequency rises 38
- Frequency management when other controls are functioning 38
- I control if the operating frequency does not change for more than a certain fixed time the frequency is adjusted according to the 38
- Indoor frequency command 38
- Pi control determine frequency up down by 38
- Th off thermostat off 38
- Upper and lower limit of frequency by pi control the frequency upper and lower limits are set according to the command on indoor unit when the indoor or outdoor unit quiet operation command comes from the indoor unit the upper limit frequency is lowered than the usual setting 38
- When frequency is drooping frequency management is carried out only when the frequency droops 38
- When starting the compressor the frequency is initialized according to the 38
- Controls at mode changing start up 39
- Four way valve operation compensation 39
- Four way valve switching 39
- Preheating operation 39
- 3 minute standby 40
- Compressor protection function 40
- Control specification sibe041010 40
- Detail 40
- Discharge pipe temperature control 40
- Drooping zone the timer starts and the frequency is drooping keep zone the upper limit of frequency is kept 40
- Function and control 40
- Outline the discharge pipe temperature is used as the internal temperature of the compressor if the discharge pipe temperature rises above a certain level the upper limit of frequency is set to keep this temperature from going up further 40
- Stop zone when the temperature reaches the stop zone the compressor stops 40
- Turning on the compressor is prohibited for 3 minutes after turning it off except when defrosting 40
- Up zone the upper limit of frequency is increased reset zone the upper limit of frequency is canceled 40
- When turning the compressor from off to on the upper limit of frequency is set as follows the function is not activated when defrosting 40
- Zone control 40
- After 2 seconds in this zone the compressor is stopped drooping zone 41
- After this the output frequency is pulled down by 2 hz every second until it reaches the keep zone keep zone 41
- Detail 41
- Frequency control in each zone stop zone 41
- Input current control 41
- Limit of the frequency is canceled 41
- Limitation of current drooping and stop value according to the outdoor temperature 41
- Outline the microcomputer calculates the input current during the compressor is running and sets the frequency upper limit from the input current in case of heat pump model this control which is the upper limit control of the frequency takes priority to the lower limit of control of four way valve operation compensation 41
- The current droops when outdoor temperature becomes higher than a certain level model by model 41
- The present maximum frequency goes on reset zone 41
- The upper limit of the compressor frequency is defined as operation frequency 2 hz 41
- C 52 c 50 42
- C 65 c 55 42
- Control specification sibe041010 42
- Detail 42
- Detail the operating frequency limitation is judged with the indoor heat exchanger temperature 42
- Drooping zone the timer starts and the frequency is drooping keep zone the upper limit of frequency is kept 42
- Freeze up protection control 42
- Function and control 42
- Heating peak cut control 42
- Outline during cooling operation the signal sent from the indoor unit controls the operating frequency limitation and prevents freezing of the indoor heat exchanger the signal from the indoor unit is divided into zones 42
- Outline during heating operation the indoor heat exchanger temperature determines the frequency upper limit to prevent abnormal high pressure 42
- Up zone the upper limit of frequency is increased reset zone the upper limit of frequency is canceled 42
- Zone control stop zone when the temperature reaches the stop zone the compressor stops 42
- Liquid compression protection function 43
- Outdoor fan control 43
- Class 72 84 70 44
- Conditions for canceling defrost the judgment is made with outdoor heat exchanger temperature 4 c 22 c 44
- Control specification sibe041010 44
- Defrost control 44
- Detail conditions for starting defrost 44
- Function and control 44
- Hz hz seconds 20 25 class 68 80 100 44
- More than 28 minutes of accumulated time pass since the start of the operation or ending the previous defrosting 44
- Outline defrosting is carried out by the cooling cycle reverse cycle the defrosting time or outdoor heat exchanger temperature must be more than a certain value to finish 44
- The compressor operates for 6 minutes 44
- The starting conditions is determined with the outdoor temperature and the outdoor heat exchanger temperature 44
- The system is in heating operation 44
- Detail the followings are the examples of control which function in each mode by the electronic expansion valve control 45
- Electronic expansion valve control 45
- Function and control 35 45
- Outline the following items are included in the electronic expansion valve control electronic expansion valve is fully closed 1 electronic expansion valve is fully closed when turning on the power 2 pressure equalizing control open control 1 electronic expansion valve control when starting operation 2 electronic expansion valve control when frequency changed 3 electronic expansion valve control for defrosting 4 electronic expansion valve control when the discharge pipe temperature is abnormally high 5 electronic expansion valve control when the discharge pipe thermistor is disconnected feedback control 1 discharge pipe temperature control 45
- Sibe041010 control specification 45
- Disconnection of the discharge pipe thermistor 46
- Fully closing with power on 46
- High discharge pipe temperature 46
- Opening limit 46
- Pressure equalization control 46
- Starting operation control 46
- Control when frequency is changed 47
- Target discharge pipe temperature control 47
- Detection of overcurrent and overload 48
- Malfunctions 48
- Refrigerant shortage control 48
- Sensor malfunction detection 48
- Detail 49
- Forced operation mode 49
- Outline forced operation mode includes only forced cooling 49
- Part 5 operation manual 50
- System configuration 1 2 operation manual 2 50
- System configuration 51
- Operation manual 52
- Remote controller 52
- Auto dry cool heat fan operation 53
- To change the temperature setting 53
- To start operation 53
- To stop operation 53
- Press fan setting button 54
- To change the airflow rate setting 54
- Adjusting the airflow direction 55
- To adjust the horizontal blades flaps 55
- To adjust the vertical blades louvers 55
- Always use a remote controller to adjust the flaps angle if you attempt to move it forcibly with hand when it is swinging the mechanism may be broken 56
- Cool dry the flap will go up heat the flap will go down 56
- Notes on comfort airflow operation 56
- Notes on flaps and louvers angles 56
- Press comfort airflow button 56
- Press comfort airflow button again 56
- To cancel comfort airflow operation 56
- To start comfort airflow operation 56
- Powerful operation 57
- To cancel powerful operation 57
- To start powerful operation 57
- Econo operation 58
- To cancel econo opera tion 58
- To start econo operation 58
- Timer operation 59
- To cancel the off timer operation 59
- To use off timer operation 59
- Attention 60
- To cancel on timer operation 60
- To combine on timer and off timer 60
- To use on timer operation 60
- Caution for diagnosis 2 61
- Check 0 61
- Part 6 service diagnosis 61
- Problem symptoms and measures 3 3 service check function 4 4 troubleshooting 7 61
- Caution for diagnosis 62
- Troubleshooting with led 62
- Problem symptoms and measures 63
- Check method 1 1 when the timer cancel button is held down for 5 seconds 64
- Indication appears on the temperature display section 64
- Note 1 a short beep pi and two consecutive beeps pi pi indicate non corresponding codes 2 to return to the normal mode hold the timer cancel button down for 5 seconds when the remote controller is left untouched for 60 seconds it also returns to the normal mode 64
- Press the timer cancel button repeatedly until a long beep sounds 64
- Service check function 64
- The code indication changes in the sequence shown below 64
- Timer cancel button 64
- Displayed only when system down occurs 67
- Error codes and description 67
- Troubleshooting 67
- Defective indoor unit pcb 68
- Disconnection of connector 68
- Indoor unit pcb abnormality 68
- Malfunction decision conditions 68
- Method of malfunction detection 68
- Note check the following connector 68
- Remote controller display 68
- Supposed causes 68
- The system cannot set the internal settings 68
- The system checks if the circuit works properly within the microcomputer of the indoor unit 68
- Troubleshooting 68
- Wrong models interconnected 68
- Freeze up protection control or heating peak cut control 69
- Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged 70
- Caution 70
- Check no 6 refer to p 2 70
- Service diagnosis 70
- Troubleshooting 70
- Troubleshooting sibe041010 70
- Fan motor dc motor or related abnormality 71
- Caution be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged 72
- Check no 0 refer to p 8 72
- Check no 8 refer to p 7 72
- Check no 9 refer to p 7 72
- Service diagnosis 72
- Troubleshooting 72
- Troubleshooting sibe041010 72
- Thermistor or related abnormality indoor unit 73
- Breaking of the connection wires between the indoor and outdoor units wire no 3 74
- Check no 0 refer to p 4 74
- Defective indoor unit pcb 74
- Defective outdoor unit pcb 74
- Disturbed power supply waveform 74
- Malfunction decision conditions 74
- Method of malfunction detection 74
- Remote controller display 74
- Signal transmission error between indoor and outdoor unit 74
- Supposed causes 74
- The data received from the outdoor unit in indoor unit outdoor unit signal transmission is checked whether it is normal 74
- The data sent from the outdoor unit cannot be received normally or the content of the data is abnormal 74
- Troubleshooting 74
- Wiring error 74
- Defective indoor unit pcb 75
- Defective outdoor unit pcb 75
- Malfunction decision conditions 75
- Method of malfunction detection 75
- Remote controller display 75
- Supposed causes 75
- The pair type and multi type are interconnected 75
- The supply power is detected for its requirements different from pair type and multi type by the indoor outdoor transmission signal 75
- Troubleshooting 75
- Unspecified voltage between indoor and outdoor unit 75
- Wrong indoor unit pcb or outdoor unit pcb mounted 75
- Wrong models interconnected 75
- Wrong wiring of connection wires 75
- Broken harness between pcbs 76
- Defective outdoor unit pcb 76
- Malfunction decision conditions 76
- Method of malfunction detection 76
- Momentary fall of voltage 76
- Momentary power failure etc 76
- Outdoor unit pcb abnormality 76
- Remote controller display 76
- Supposed causes 76
- The microprocessor program runs out of control 76
- The system checks to see if the zero cross signal comes in properly 76
- The system follows the microprocessor program as specified 76
- The zero cross signal is not detected 76
- Troubleshooting 76
- A compressor overload is detected through compressor ol 77
- Check no 1 refer to p 5 77
- Check no 4 refer to p 0 77
- Check no 5 refer to p 1 77
- Check no 6 refer to p 2 77
- Defective discharge pipe thermistor 77
- Defective electronic expansion valve or coil 77
- Defective four way valve or coil 77
- Defective outdoor unit pcb 77
- Defective stop valve 77
- If the error repeats twice the system is shut down 77
- Malfunction decision conditions 77
- Method of malfunction detection 77
- Ol activation compressor overload 77
- Refrigerant shortage 77
- Remote controller display 77
- Reset condition continuous run for about 60 minutes without any other error 77
- Supposed causes 77
- The operating temperature condition is not specified 77
- Troubleshooting 77
- Water mixed in refrigerant 77
- A compressor lock is detected by checking the compressor running condition through the position detection circuit 78
- Compressor harness disconnected 78
- Compressor lock 78
- Compressor locked 78
- If the error repeats 16 times the system is shut down 78
- Malfunction decision conditions 78
- Method of malfunction detection 78
- Operation stops due to overcurrent 78
- Remote controller display 78
- Reset condition continuous run for about 11 minutes without any other error 78
- Supposed causes 78
- Troubleshooting 78
- An error is determined with the high voltage fan motor rotation speed detected by the hall ic 79
- Check no 5 refer to p 6 79
- Dc fan lock 79
- Defective fan motor 79
- Defective outdoor unit pcb 79
- Disconnection of the fan motor 79
- Foreign matters stuck in the fan 79
- If the error repeats 16 times the system is shut down 79
- Malfunction decision conditions 79
- Method of malfunction detection 79
- Remote controller display 79
- Reset condition continuous run for about 11 minutes without any other error 79
- Supposed causes 79
- The fan does not start in 30 seconds even when the fan motor is running 79
- Troubleshooting 79
- An input overcurrent is detected by checking the input current value with the compressor running 80
- Check no 7 refer to p 3 80
- Check no 8 refer to p 3 80
- Defective compressor 80
- Defective outdoor unit pcb 80
- Defective power module 80
- Heating above 14 a 80
- Input overcurrent detection 80
- Malfunction decision conditions 80
- Method of malfunction detection 80
- Remote controller display 80
- Short circuit 80
- Supposed causes 80
- The following current with the compressor running continues for 2 seconds coolin 80
- Troubleshooting 80
- Four way valve abnormality 81
- Caution be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged 82
- Check no 1 refer to p 5 82
- Check no 5 refer to p 1 82
- Check no 6 refer to p 2 82
- Service diagnosis 82
- Troubleshooting 82
- Troubleshooting sibe041010 82
- An error is determined with the temperature detected by the discharge pipe thermistor 83
- Check no 1 refer to p 5 83
- Check no 4 refer to p 0 83
- Check no 6 refer to p 2 83
- Defective discharge pipe thermistor defective outdoor heat exchanger thermistor or outdoor temperature thermistor 83
- Defective electronic expansion valve or coil 83
- Defective four way valve 83
- Defective outdoor unit pcb 83
- Defective stop valve 83
- Discharge pipe temperature control 83
- If the error repeats 4 times the system is shut down 83
- If the temperature detected by the discharge pipe thermistor rises above c the compressor stops 83
- Malfunction decision conditions 83
- Method of malfunction detection 83
- Refrigerant shortage 83
- Remote controller display 83
- Reset condition continuous run for about 60 minutes without any other error 83
- Supposed causes 83
- The error is cleared when the discharge pipe temperature has dropped below c 83
- Troubleshooting 83
- Water mixed in refrigerant 83
- Check no 4 refer to p 0 84
- Check no 6 refer to p 2 84
- Check no 7 refer to p 3 84
- Check no 8 refer to p 3 84
- Check no 9 refer to p 4 84
- Defective electronic expansion valve or coil 84
- Defective outdoor fan motor 84
- Defective outdoor heat exchanger thermistor 84
- Defective outdoor unit pcb 84
- Defective stop valve 84
- Dirty outdoor heat exchanger 84
- High pressure control in cooling 84
- High pressure control operation halt frequency drop etc is activated in cooling operation if the temperature sensed by the outdoor heat exchanger thermistor exceeds the limit 84
- Malfunction decision conditions 84
- Method of malfunction detection 84
- Remote controller display 84
- Supposed causes 84
- The error is cleared when the temperature drops below about 5 84
- The installation space is not large enough 84
- The temperature sensed by the outdoor heat exchanger thermistor rises above about 60 c 84
- Troubleshooting 84
- Compressor system sensor abnormality 85
- Position sensor abnormality 86
- Caution be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged 87
- Check no 9 refer to p 9 87
- Service diagnosis 77 87
- Sibe041010 troubleshooting 87
- Troubleshooting 87
- Dc voltage current sensor abnormality 88
- Thermistor or related abnormality outdoor unit 89
- Caution 90
- Check no 6 refer to p 2 90
- Discharge pipe thermistor 90
- Outdoor heat exchanger thermistor 90
- Outdoor temperature thermistor 90
- Service diagnosis 90
- Troubleshooting in case of 90
- Troubleshooting sibe041010 90
- Electrical box temperature rise 91
- Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged 92
- C 93 c 70 92
- Caution 92
- Check no 7 refer to p 3 92
- Check no 9 refer to p 4 92
- Service diagnosis 92
- Troubleshooting 92
- Troubleshooting sibe041010 92
- Radiation fin temperature rise 93
- Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged 94
- Caution 94
- Check no 7 refer to p 3 94
- Check no 9 refer to p 4 94
- Note refer to application of silicon grease to a power transistor and a diode bridge on page 141 for detail 94
- Service diagnosis 94
- Troubleshooting 94
- Troubleshooting sibe041010 94
- Output overcurrent detection 95
- Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged 96
- Caution 96
- Check no 3 refer to p 5 96
- Check no 7 refer to p 3 96
- Check no 8 refer to p 3 96
- Service diagnosis 96
- Troubleshooting 96
- Troubleshooting sibe041010 96
- Refrigerant shortage 97
- Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged 98
- Caution 98
- Check no 4 refer to p 0 98
- Check no 6 refer to p 2 98
- Service diagnosis 98
- Troubleshooting 98
- Troubleshooting sibe041010 98
- An over voltage signal is fed from the over voltage detection circuit to the microcomputer 99
- Defective dc voltage detection circuit 99
- Defective over voltage detection circuit 99
- Defective pam control part 99
- Layer short inside the fan motor winding 99
- Low voltage detection 99
- Low voltage detection an abnormal voltage drop is detected by the dc voltage detection circuit 99
- Low voltage detection or over voltage detection 99
- Malfunction decision conditions 99
- Method of malfunction detection 99
- Over voltage detection 99
- Over voltage detection an abnormal voltage rise is detected by the over voltage detection circuit 99
- Remote controller display 99
- Supply voltage is not as specified 99
- Supposed causes 99
- The compressor stops if the error occurs and restarts automatically after 3 minute standby 99
- The voltage detected by the dc voltage detection circuit is below 150 v 99
- Troubleshooting 99
- Electronic expansion valve check 100
- How to check 100
- Check no 5 101
- Four way valve performance check 101
- Service diagnosis 91 101
- Sibe041010 check 101
- Check no 6 disconnect the connectors of the thermistors from the pcb and measure the resistance of each thermistor using tester the relationship between normal temperature and resistance is shown in the table and the graph below 102
- For the models in which the thermistor is directly mounted on the pcb disconnect the connector for the pcb and measure 102
- Thermistor resistance check 102
- Check no 7 103
- Check no 8 103
- Discharge pressure check 103
- Installation condition check 103
- Service diagnosis 93 103
- Sibe041010 check 103
- Check no 0 measure the power supply waveform between no 1 and no 2 on the terminal board and check the waveform disturbance 104
- Check no 9 dc motor 104
- Check sibe041010 104
- Check to see if the power supply waveform is a sine wave fig 104
- Check to see if there is waveform disturbance near the zero cross sections circled in fig 104
- Fig fig 104
- Outdoor fan system check 104
- Power supply waveforms check 104
- Service diagnosis 104
- Check no 1 105
- Check no 3 105
- Disconnect the compressor harness connector from the outdoor unit pcb to disengage the connector press the protrusion on the connector 105
- Follow the procedure below to measure resistance between the terminals of the db1 and the terminals of the compressor connector with a multi tester evaluate the measurement results for a judgment 105
- Inverter units refrigerant system check 105
- Note check to make sure that the voltage between and of the diode bridge db1 is approx 0 v before checking 105
- Power module check 105
- 1 check that the voltage between the pins 10 11 is 15 vdc 2 check if the hall ic generates the rotation pulse 0 15 vdc 4 times between the pins 10 12 10 13 when the fan motor is manually rotated once 106
- Check sibe041010 106
- Rotation pulse check on the outdoor unit pcb 106
- Service diagnosis 106
- Check no 8 1 check the connector for connection 2 check the motor control voltage is generated between the pins 2 and 3 107
- Check no 9 1 check the connector for connection 2 turn the power on and stop the operation 3 check if the hall ic generates the rotation pulse 4 times when the fan motor is manually rotated once between the pins 1 and 3 107
- Indoor unit pcb output check 107
- Rotation pulse check on the indoor unit pcb 107
- Service diagnosis 97 107
- Sibe041010 check 107
- Between the pins 12 9 and between 9 6 108
- Check no 0 1 check the connector for connection 2 turn the power off 3 check if each resistance at the phases u v and v w is 90 108
- Check sibe041010 108
- Fan motor wire short circuit check 108
- Service diagnosis 108
- Main circuit short check 109
- Indoor unit 01 110
- Outdoor unit 22 110
- Part 7 removal procedure 110
- Indoor unit 111
- Removal of air filter 111
- Removal of horizontal blades fan guard 113
- Removal of front panel 115
- Removal of front grille 116
- Removal of electrical box vertical blades 118
- Removal of pcb swing motor 121
- Disconnect the wire harnesses from the terminal board with pliers 122
- Indoor unit sibe041010 122
- Lift the lower part of the display pcb assy to remove 122
- Removal procedure 122
- Remove the display pcb 122
- Step procedure points 122
- Removal of indoor heat exchanger 125
- Removal of fan rotor 128
- Exchange of drain hose 131
- Outdoor unit 132
- Removal of panels 132
- Removal of outdoor fan fan motor 134
- Removal of electrical box control pcb 135
- Cut the clamp 139
- Disconnect the 2 terminals of the reactor 139
- Remove the 2 screws of the earth terminals 139
- Remove the control pcb 139
- Remove the screw on the terminal board 139
- Disconnect the 3 connectors for filter pcb s10 hn3 hl3 140
- Disconnect the connector for thermistors s90 140
- Remove the 3 screws to remove the reactor 140
- Remove the 6 screws 140
- Removal of sound blanket 142
- Pull the sound blanket inner 1 out 143
- Pull the sound blankets outer and inner 2 out 143
- Since the piping ports on the sound blanket are torn easily remove the blanket carefully 143
- Removal of four way valve 144
- Removal of compressor 147
- Others 39 148
- Part 8 others 148
- Others 149
- Trial operation 149
- Field settings 150
- For the location of the jumper refer to the following pages indoor unit page 10 outdoor unit page 12 150
- How to set the different addresses 150
- Indoor unit pcb 1 remove the front grille 2 screws 2 remove the service cover 1 screw 3 remove the shield plate 3 hooks 4 cut the address setting jumper ja on the control pcb 150
- Jumper settings 150
- When 2 indoor units are installed in 1 room 1 of the 2 pairs of indoor unit and wireless remote controller can be set for different address both the indoor unit pcb and the wireless remote controller need alteration 150
- When 2 units are installed in 1 room 150
- Wireless remote controller 1 remove the cover and take it off 2 cut the address setting jumper j4 150
- Application of silicon grease to a power transistor and a diode bridge 151
- Diode bridge diode bridge rectifier stack etc 151
- Ng foreign object ok evenly applied silicon grease ng not evenly applied 151
- Not applied paper waste 151
- Power transistor trm tpm igbt ipm spm etc 151
- Take out a pcb 151
- Part 9 appendix 152
- Piping diagrams 43 152
- Wiring diagrams 45 152
- Ftx20 25 35jv1b atx20 25 35jv1b 153
- Indoor unit 153
- Piping diagrams 153
- Appendix 154
- Outdoor unit 154
- Piping diagrams sibe041010 154
- Rx20 25jv1b arx20 25jv1b 154
- Rx35jv1b arx35jv1b 154
- Appendix 145 155
- Ftx20 25 35jv1b atx20 25 35jv1b 155
- Indoor unit 155
- Outdoor unit 155
- Rx20 25 35jv1b arx20 25 35jv1b 155
- Sibe041010 wiring diagrams 155
- Wiring diagrams 155
- Ask a qualified installer or contractor to install this product do not try to install the product yourself improper installation can result in water or refrigerant leakage electrical shock fire or explosion 156
- Cautions on product corrosion 156
- Daikin industries ltd s products are manufactured for export to numerous countries throughout the world daikin industries ltd does not have control over which products are exported to and used in a particular country prior to purchase please therefore confirm with your local authorised importer distributor and or retailer whether this product conforms to the applicable standards and is suitable for use in the region where the product will be used this statement does not purport to exclude restrict or modify the application of any local legislation 156
- Http www daikin com global_ac 156
- If you have any enquiries please contact your local importer distributor and or retailer 156
- Read the user s manual carefully before using this product the user s manual provides important safety instructions and warnings be sure to follow these instructions and warnings 156
- Sibe041010 printed in japan 03 2010 b ak 156
- Use only those parts and accessories supplied or specified by daikin ask a qualified installer or contractor to install those parts and accessories use of unauthorised parts and accessories or improper installation of parts and accessories can result in water or refrigerant leakage electrical shock fire or explosion 156
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