![Daikin RX50G2V1B [4/193] Part 6 service diagnosis 5](/img/pdf.png)
Daikin RX50G2V1B [4/193] Part 6 service diagnosis 5
![Daikin RX50G2V1B [4/193] Part 6 service diagnosis 5](/views2/1772281/page4/bg4.png)
SiBE041029
iii Table of Contents
2.2 AUTO · DRY · COOL · HEAT · FAN Operation ......................................43
2.3 Adjusting the Airflow Direction................................................................45
2.4 POWERFUL Operation ..........................................................................47
2.5 OUTDOOR UNIT QUIET Operation.......................................................48
2.6 HOME LEAVE Operation .......................................................................49
2.7 INTELLIGENT EYE Operation ...............................................................51
2.8 TIMER Operation ...................................................................................53
Part 6 Service Diagnosis............................................................. 55
1. Caution for Diagnosis............................................................................56
1.1 Troubleshooting with LED ......................................................................56
2. Problem Symptoms and Measures .......................................................57
3. Service Check Function ........................................................................58
4. Troubleshooting ....................................................................................61
4.1 Error Codes and Description ..................................................................61
4.2 Indoor Unit PCB Abnormality .................................................................62
4.3 Freeze-up Protection Control or Heating Peak-cut Control....................63
4.4 Fan Motor (DC Motor) or Related Abnormality.......................................64
4.5 Thermistor or Related Abnormality (Indoor Unit)....................................66
4.6 Signal Transmission Error (between Indoor Unit and Outdoor Unit) ......67
4.7 Unspecified Voltage (between Indoor Unit and Outdoor Unit) ...............69
4.8 Outdoor Unit PCB Abnormality...............................................................70
4.9 OL Activation (Compressor Overload) ...................................................71
4.10 Compressor Lock ...................................................................................72
4.11 DC Fan Lock ..........................................................................................73
4.12 Input Overcurrent Detection ...................................................................74
4.13 Four Way Valve Abnormality..................................................................75
4.14 Discharge Pipe Temperature Control.....................................................77
4.15 High Pressure Control in Cooling ...........................................................78
4.16 Compressor System Sensor Abnormality ..............................................79
4.17 Position Sensor Abnormality ..................................................................80
4.18 CT or Related Abnormality .....................................................................82
4.19 Thermistor or Related Abnormality (Outdoor Unit).................................84
4.20 Electrical Box Temperature Rise............................................................86
4.21 Radiation Fin Temperature Rise ............................................................88
4.22 Output Overcurrent Detection ................................................................90
4.23 Refrigerant Shortage ..............................................................................92
4.24 Low-voltage Detection or Over-voltage Detection..................................94
4.25 Signal Transmission Error on Outdoor Unit PCB ...................................95
5. Check ....................................................................................................96
5.1 How to Check .........................................................................................96
Part 7 Removal Procedure ........................................................103
1. Indoor Unit...........................................................................................104
1.1 Removal of Air Filter / Front Panel .......................................................104
1.2 Removal of Front Grille ........................................................................107
1.3 Removal of Horizontal Blades / Vertical Blades ...................................109
1.4 Removal of Electrical Box / PCB / Swing Motor ...................................111
1.5 Removal of Indoor Heat Exchanger .....................................................117
1.6 Removal of Fan Rotor / Fan Motor.......................................................120
Содержание
- Inverter pair 1
- Sibe041029 1
- Wall mounted type g series 1
- Heat pump indoor units 2
- Inverter pair wall mounted type g 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 3 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 2 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 6 4
- Check 6 4
- Indoor unit 04 4
- Part 6 service diagnosis 5 4
- Part 7 removal procedure 03 4
- Problem symptoms and measures 7 3 service check function 8 4 troubleshooting 1 4
- Others 75 5
- Outdoor unit rx50 60g2v1b 22 5
- Outdoor unit rx71gv1b 44 5
- Part 8 others 74 5
- Part 9 appendix 78 5
- Piping diagrams 79 5
- Wiring diagrams 81 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 sibe041029 12
- Holding functions no functions 12
- List of functions 12
- Part 2 specifications 13
- Specifications 13
- Hz 220 230 240 v 14
- Specifications 14
- Specifications sibe041029 14
- Hz 220 230 240v 15
- Sibe041029 specifications 15
- Specifications 5 15
- Part 3 printed circuit board connector wiring diagram 16
- Printed circuit board connector wiring diagram 16
- Indoor unit 17
- Printed circuit board connector wiring diagram 17
- Pcb 2 signal receiver pcb pcb 3 buzzer pcb 18
- Pcb 4 display pcb pcb 5 intelligent eye sensor pcb 18
- Pcb detail pcb 1 control pcb 18
- Printed circuit board connector wiring diagram 18
- Printed circuit board connector wiring diagram sibe041029 18
- Outdoor unit 19
- Pcb 1 main pcb 71 model 20
- Pcb detail pcb 1 main pcb 50 60 model 20
- Printed circuit board connector wiring diagram 20
- Printed circuit board connector wiring diagram sibe041029 20
- Pcb 2 service monitor pcb 21
- Printed circuit board connector wiring diagram 11 21
- Sibe041029 printed circuit board connector wiring diagram 21
- Function of thermistor 5 3 control specification 6 22
- Main functions 3 22
- Part 4 function and control 22
- Additional control parameters 23
- Drawing of inverter the following drawing shows a schematic view of the inverter principle 23
- Forced cooling operation 23
- Frequency principle 23
- Frequency restrictions 23
- Initial settings 23
- 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 23
- 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 23
- Main functions 23
- The difference between the room temperature and the target temperature 23
- The load condition of the operating indoor unit 23
- The target frequency is adapted by additional parameters in the following cases 23
- Comfortable air conditioning a fine adjustment is integrated to keep the room temperature constant 24
- Energy saving heating and cooling once the set temperature is reached the energy saving operation enables to maintain the room temperature at low power 24
- Even during extreme cold weather the high capacity is achieved it is maintained even when the outdoor temperature is 2 c 24
- For detail 24
- Forced cooling operation refer to forced operation mode on page 24
- Frequency limits the following functions regulate the minimum and maximum frequency 24
- Inverter features the inverter provides the following features 24
- 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 24
- The regulating capacity can be changed according to the changes in the outdoor temperature and cooling heating load 24
- Airflow direction control 25
- Fan speed control for indoor units 26
- 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 27
- 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 27
- Program dry operation 27
- Zone a thermostat off 27
- Zone b zone b 27
- Zone c thermostat on 27
- Automatic operation 28
- Cooling dry 29
- Function and control 19 29
- Heating 29
- Sibe041029 main functions 29
- The monitoring time has passed while the temperature difference is in the zone b cooling dry 10 minutes heating 10 seconds 29
- The operation turns on in any zones except a 29
- The system resumes from defrost control in any zones except a 29
- The temperature difference is in the zone a 29
- The temperature difference returns to the zone c after being in the zone a 29
- Thermostat control 29
- Thermostat control is based on the difference between the room temperature and the target temperature 29
- Thermostat off condition 29
- Thermostat on condition 29
- Cooling 30
- 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 30
- Function and control 30
- Heating 30
- Main functions sibe041029 30
- Night set mode 30
- Outline when the off timer is set the night set mode is automatically activated the night set mode keeps the airflow rate setting 30
- Home leave operation 31
- A microcomputer in an indoor unit carries out a sampling every 20 msec and if it detects 10 cycles of the wave in one second in total corresponding to 20 msec 10 200 msec it judges human is in the room as the motion signal is on 32
- Detail 1 detection method by intelligent eye 32
- For dry operation you cannot set the temperature with a remote controller but internally the target temperature is shifted by 1 c 32
- Function and control 32
- In case of fan mode the fan speed reduces by 60 rpm 32
- Intelligent eye operation 32
- Main functions sibe041029 32
- Others 32
- Outline this is the function that detects existence of humans in the room by a human motion sensor intelligent eye and reduces the capacity when there is nobody in the room in order to save electricity 32
- The motions for example in cooling 32
- This sensor detects human motion by receiving infrared rays and displays the pulse wave output 32
- When a microcomputer does not have a signal from the sensor in 20 minutes it judges that nobody is in the room and operates the unit in temperature shifted from the target temperature cooling 2 c higher dry 1 c higher heating 2 c lower auto according to the operation mode at that time 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 sibe041029 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
- 60 class 40
- Compressor protection function 40
- Detail 40
- Discharge pipe temperature 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
- Seconds 40
- Turning on the compressor is prohibited for 3 minutes after turning it off except when defrosting 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
- 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 53 c 51 42
- C 56 c 55 42
- Control specification sibe041029 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
- Defrost control 43
- Liquid compression protection function 43
- Outdoor fan control 43
- 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
- Sibe041029 control specification 45
- 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
- Disconnection of the discharge pipe thermistor 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
- Dry mode auto or heat or cool or fan mode 54
- Five levels of air flow rate setting from to 54
- Indoor unit quiet operation 54
- Plus are available 54
- Press fan setting button 54
- The computer chip works to rid the room of humidity while maintaining the temperature as much as possible it automatically controls temperature and fan strength so manual adjustment of these functions is unavailable 54
- To change the air flow rate setting 54
- When the air flow is set to the noise from the indoor unit will become quieter use this when making the noise quieter the unit might lose capacity when the air flow rate is set to a weak level 54
- Adjusting the air flow direction 55
- Adjusting the airflow direction 55
- To adjust the horizontal blade flap 55
- To adjust the vertical blades louvers 55
- Notes on flap angle 56
- Notes on louvers angles 56
- Press either the swing button or the swing button 56
- Press the swing button and the swing button 56
- The and display will light up and the flap and louvers will move in turn 56
- To 3 d airflow 56
- To cancel 3 d airflow 56
- Powerful operation 57
- To cancel powerful operation 57
- To start powerful operation 57
- Outdoor unit quiet operation 58
- To cancel outdoor unit quiet operation 58
- To start outdoor unit quiet operation 58
- Before using home leave operation 59
- Home leave operation 59
- To cancel home leave operation 59
- To start home leave operation 59
- Use as a favorite mode 60
- Use as an energy saving mode 60
- Useful in these cases 60
- What s the home leave operation 60
- Intelligent eye operation 61
- Caution 62
- Intelligent eye is useful for energy saving 62
- Notes on intelligent eye 62
- Timer operation 63
- Example 64
- To cancel on timer operation 64
- To combine on timer and off timer 64
- To use on timer operation 64
- Caution for diagnosis 6 65
- Check 6 65
- Part 6 service diagnosis 65
- Problem symptoms and measures 7 3 service check function 8 4 troubleshooting 1 65
- Caution for diagnosis 66
- Troubleshooting with led 66
- Problem symptoms and measures 67
- Check method 1 1 when the timer cancel button is held down for 5 seconds 68
- Indication appears on the temperature display section 68
- 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 68
- Press the timer cancel button repeatedly until a long beep sounds 68
- Service check function 68
- The code indication changes in the sequence shown below 68
- Timer cancel button 68
- Displayed only when system down occurs 71
- Error codes and description 71
- Troubleshooting 71
- Defective indoor unit pcb 72
- Disconnection of connector 72
- Evaluation of zero cross detection of power supply by the indoor unit pcb 72
- Indoor unit pcb abnormality 72
- Malfunction decision conditions 72
- Method of malfunction detection 72
- Note check the following connector 72
- Remote controller display 72
- Supposed causes 72
- There is no zero cross detection in approximately 10 seconds 72
- Troubleshooting 72
- Wrong models interconnected 72
- Freeze up protection control or heating peak cut control 73
- Fan motor dc motor or related abnormality 74
- Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged 75
- Caution 75
- Check no 1 refer to p 6 75
- Service diagnosis 65 75
- Sibe041029 troubleshooting 75
- Troubleshooting 75
- Thermistor or related abnormality indoor unit 76
- Signal transmission error between indoor unit and outdoor unit 77
- Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged 78
- Caution 78
- Check no 0 refer to p 00 78
- Service diagnosis 78
- Troubleshooting 78
- Troubleshooting sibe041029 78
- Defective indoor unit pcb 79
- Defective outdoor unit pcb 79
- Malfunction decision conditions 79
- Method of malfunction detection 79
- Remote controller display 79
- Supposed causes 79
- The pair type and multi type are interconnected 79
- The supply power is detected for its requirements different from pair type and multi type by the indoor outdoor transmission signal 79
- Troubleshooting 79
- Unspecified voltage between indoor unit and outdoor unit 79
- Wrong indoor unit pcb or outdoor unit pcb mounted 79
- Wrong models interconnected 79
- Wrong wiring of connection wires 79
- Outdoor unit pcb abnormality 80
- A compressor overload is detected through compressor ol 81
- Check no 1 refer to p 00 81
- Check no 4 refer to p 6 81
- Check no 5 refer to p 7 81
- Check no 6 refer to p 8 81
- Defective discharge pipe thermistor 81
- Defective electronic expansion valve or coil 81
- Defective four way valve or coil 81
- Defective outdoor unit pcb 81
- Defective stop valve 81
- If the error repeats twice the system is shut down 81
- Malfunction decision conditions 81
- Method of malfunction detection 81
- Ol activation compressor overload 81
- Refrigerant shortage 81
- Remote controller display 81
- Reset condition continuous run for about 60 minutes without any other error 81
- Supposed causes 81
- The operating temperature condition is not specified 81
- Troubleshooting 81
- Water mixed in refrigerant 81
- A compressor lock is detected by checking the compressor running condition through the position detection circuit 82
- Compressor lock 82
- Compressor locked 82
- Disconnection of compressor harness 82
- If the error repeats 16 times the system is shut down 82
- Judging from the current waveform generated when high frequency voltage is applied to the compressor 82
- Malfunction decision conditions 82
- Method of malfunction detection 82
- Remote controller display 82
- Reset condition continuous run for about 5 minutes without any other error 82
- Supposed causes 82
- Troubleshooting 82
- An error is determined with the high voltage fan motor rotation speed detected by the hall ic 83
- Check no 5 refer to p 02 83
- Dc fan lock 83
- Defective fan motor 83
- Defective outdoor unit pcb 83
- Disconnection of the fan motor 83
- Foreign matters stuck in the fan 83
- If the error repeats 16 times the system is shut down 83
- Malfunction decision conditions 83
- Method of malfunction detection 83
- Remote controller display 83
- Reset condition continuous run for about 5 minutes without any other error 83
- Supposed causes 83
- The fan does not start in 30 seconds even when the fan motor is running 83
- Troubleshooting 83
- An input overcurrent is detected by checking the input current value being detected by ct with the compressor running 84
- Check no 7 refer to p 9 84
- Check no 8 refer to p 9 84
- Defective compressor 84
- Defective outdoor unit pcb 84
- Defective power module 84
- Input overcurrent detection 84
- Malfunction decision conditions 84
- Method of malfunction detection 84
- Remote controller display 84
- Short circuit 84
- Supposed causes 84
- The following ct input with the compressor running continues for 2 seconds ct input above 20 a 84
- Troubleshooting 84
- Four way valve abnormality 85
- Caution be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged 86
- Check no 1 refer to p 00 86
- Check no 5 refer to p 7 86
- Check no 6 refer to p 8 86
- Service diagnosis 86
- Troubleshooting 86
- Troubleshooting sibe041029 86
- An error is determined with the temperature detected by the discharge pipe thermistor 87
- Check no 1 refer to p 00 87
- Check no 4 refer to p 6 87
- Check no 6 refer to p 8 87
- Defective discharge pipe thermistor defective outdoor heat exchanger thermistor or outdoor temperature thermistor 87
- Defective electronic expansion valve or coil 87
- Defective four way valve 87
- Defective outdoor unit pcb 87
- Defective stop valve 87
- Discharge pipe temperature control 87
- If the error repeats 6 times the system is shut down 87
- If the temperature detected by the discharge pipe thermistor rises above c the compressor stops 87
- Malfunction decision conditions 87
- Method of malfunction detection 87
- Refrigerant shortage 87
- Remote controller display 87
- Reset condition continuous run for about 60 minutes without any other error 87
- Supposed causes 87
- The error is cleared when the temperature is dropped below c 87
- Troubleshooting 87
- Water mixed in refrigerant 87
- Check no 4 refer to p 6 88
- Check no 6 refer to p 8 88
- Check no 7 refer to p 9 88
- Check no 8 refer to p 9 88
- Check no 9 refer to p 00 88
- Defective electronic expansion valve or coil 88
- Defective outdoor fan motor 88
- Defective outdoor heat exchanger thermistor 88
- Defective outdoor unit pcb 88
- Defective stop valve 88
- Dirty outdoor heat exchanger 88
- High pressure control in cooling 88
- High pressure control operation half frequency drop etc is activated in cooling mode if the temperature sensed by the outdoor heat exchanger thermistor exceeds the limit 88
- Malfunction decision conditions 88
- Method of malfunction detection 88
- Remote controller display 88
- Supposed causes 88
- The error is cleared when the temperature drops below about 50 c 88
- The installation space is not large enough 88
- The temperature sensed by the outdoor heat exchanger thermistor rises above about 60 c 88
- Troubleshooting 88
- Compressor system sensor abnormality 89
- Defective compressor 89
- Defective outdoor unit pcb 89
- Disconnection of compressor harness 89
- Disconnection of reactor 89
- Malfunction decision conditions 89
- Method of malfunction detection 89
- Remote controller display 89
- Supposed causes 89
- The compressor current does not run when the compressor starts 89
- The supply voltage and the dc voltage is obviously low or high 89
- The system checks the compressor current right after the compressor starts 89
- The system checks the supply voltage and the dc voltage before the compressor starts 89
- Troubleshooting 89
- Position sensor abnormality 90
- Caution be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged 91
- Service diagnosis 81 91
- Sibe041029 troubleshooting 91
- Troubleshooting 91
- Ct or related abnormality 92
- Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged 93
- Caution 93
- Check no 2 refer to p 01 93
- Service diagnosis 83 93
- Sibe041029 troubleshooting 93
- Troubleshooting 93
- Thermistor or related abnormality outdoor unit 94
- Caution 95
- Check no 6 refer to p 8 95
- Discharge pipe thermistor 95
- Outdoor heat exchanger thermistor 95
- Outdoor temperature thermistor 95
- Service diagnosis 85 95
- Sibe041029 troubleshooting 95
- Troubleshooting in case of 95
- Electrical box temperature rise 96
- 60 class 71 class c 95 100 97
- C 80 70 c 85 85 97
- Caution be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged 97
- Check no 7 refer to p 9 97
- Check no 9 refer to p 00 97
- Service diagnosis 87 97
- Sibe041029 troubleshooting 97
- Troubleshooting 97
- Radiation fin temperature rise 98
- 60 class 71 class c 105 105 99
- Caution be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged 99
- Check no 7 refer to p 9 99
- Check no 9 refer to p 00 99
- Note1 refer to application of silicon grease to a power transistor and a diode bridge on page 177 for detail 99
- Service diagnosis 89 99
- Sibe041029 troubleshooting 99
- Troubleshooting 99
- Output overcurrent detection 100
- Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged 101
- Caution 101
- Check no 3 refer to p 01 101
- Check no 7 refer to p 9 101
- Check no 8 refer to p 9 101
- Service diagnosis 91 101
- Sibe041029 troubleshooting 101
- Troubleshooting 101
- Refrigerant shortage 102
- Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged 103
- Caution 103
- Check no 4 refer to p 6 103
- Check no 6 refer to p 8 103
- Service diagnosis 93 103
- Sibe041029 troubleshooting 103
- Troubleshooting 103
- An over voltage signal is fed from the over voltage detection circuit to the microcomputer 104
- Defective dc voltage detection circuit 104
- Defective over voltage detection circuit 104
- Defective pam control part 104
- If the error repeats 16 times the system is shut down 104
- Layer short inside the fan motor winding 104
- Low voltage detection 104
- Low voltage detection an abnormal voltage drop is detected by the dc voltage detection circuit 104
- Low voltage detection or over voltage detection 104
- Malfunction decision conditions 104
- Method of malfunction detection 104
- Over voltage detection 104
- Over voltage detection an abnormal voltage rise is detected by the over voltage detection circuit 104
- Remote controller display 104
- Reset condition continuous run for about 60 minutes without any other error 104
- Supply voltage is not as specified 104
- Supposed causes 104
- The compressor stops if the error occurs and restarts automatically after 3 minute standby 104
- The voltage detected by the dc voltage detection circuit is below 150 v 104
- Troubleshooting 104
- Signal transmission error on outdoor unit pcb 105
- Check no 1 1 check the connection of connector 2 check motor power supply voltage output pins 4 7 3 check motor control voltage pins 4 3 4 check rotation command voltage output pins 4 2 5 check rotation pulse input pins 4 1 106
- Check no 4 conduct the followings to check the electronic expansion valve ev 1 check to see if the ev connector is correctly connected to the pcb 2 turn the power off and on again and check to see if the ev generate latching sound 3 if the ev does not generate latching sound in the above step 2 disconnect the connector and check the continuity using a tester 4 check the continuity between the pins 1 6 and 3 6 and between the pins 2 5 and 4 5 if there is no continuity between the pins the ev coil is faulty 106
- Electronic expansion valve check 106
- Fan motor connector output check 106
- How to check 106
- If the continuity is confirmed in the above step 3 the outdoor unit pcb is faulty 106
- Note please note that the latching sound varies depending on the valve type 106
- Check no 5 107
- Four way valve performance check 107
- Service diagnosis 97 107
- Sibe041029 check 107
- 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 graph and the table below 108
- For the models in which the thermistor is directly mounted on the pcb disconnect the connector for the pcb and measure 108
- Thermistor resistance check 108
- Check no 7 109
- Check no 8 109
- Discharge pressure check 109
- Installation condition check 109
- Service diagnosis 99 109
- Sibe041029 check 109
- Check no 0 measure the power supply waveform between no and no on the terminal board and check the waveform disturbance 110
- Check no 1 110
- Check no 9 dc motor 110
- Check sibe041029 110
- Check to see if the power supply waveform is a sine wave fig 110
- Check to see if there is waveform disturbance near the zero cross sections circled in fig 110
- Fig fig 110
- Inverter units refrigerant system check 110
- Outdoor fan system check 110
- Power supply waveforms check 110
- Service diagnosis 110
- Capacitor voltage check 111
- Check no 2 before this check be sure to check the main circuit for short circuit with the circuit breaker still on measure the voltage according to the drawing of the model in question be careful never to touch any live parts 111
- Check no 3 111
- Disconnect the compressor harness connector from the outdoor unit pcb to disengage the connector press the protrusion on the connector 111
- 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 111
- Note check to make sure that the voltage between and of the diode bridge db1 is approx 0 v before checking 111
- Power module check 111
- Rotation pulse input on the outdoor unit pcb check 112
- Indoor unit 04 113
- Outdoor unit rx50 60g2v1b 22 113
- Outdoor unit rx71gv1b 44 113
- Part 7 removal procedure 113
- Indoor unit 114
- Removal of air filter front panel 114
- Removal of front grille 117
- Removal of horizontal blades vertical blades 119
- Removal of electrical box pcb swing motor 121
- Removal of indoor heat exchanger 127
- Removal of fan rotor fan motor 130
- Outdoor unit rx50 60g2v1b 132
- Removal of outer panels 132
- Removal of fan motor outdoor fan 136
- Disconnect the connector for fan motor s70 137
- Release the fan motor lead wire from the 7 hooks 137
- Remove the fan motor 137
- Removal of electrical box 140
- Disconnect the 2 earth wires 141
- Remove the 3 screws of the right side panel 141
- Remove the screw of the electrical box 141
- Detach the clamp and release the thermistor lead wires from the hook 143
- Lift the electrical box and remove it 143
- Release the clamp of the compressor relay harness with pliers 143
- Removal of pcb 144
- Lift up and remove the main pcb 146
- Remove the 3 screws of the main pcb 146
- See page 10 for detail of the main pcb 146
- Unfasten the 4 hooks 146
- Removal of sound blanket thermistors 147
- Removal of four way valve 149
- Removal of electronic expansion valve 150
- Removal of compressor 151
- Outdoor unit rx71gv1b 154
- Removal of outer panels 154
- Remove the 4 screws on the back and the 1 screw on the left side 155
- Remove the suction grille 155
- Remove the top panel 155
- Slide the suction grille downward to unfasten the 3 top hooks 155
- Lift the top panel and remove it 156
- Remove the 2 screws on the front and the 1 screw on the right side panel 156
- Remove the 5 screws 156
- Remove the right side panel 156
- Slide the right side panel downward to unfasten the 2 hooks on the back side 157
- Remove the 2 screws 158
- Remove the front panel 2 158
- Remove the right side panel 158
- This screw is m5 3 16 158
- Remove the front panel 2 159
- Slide the front panel 2 downward to unfasten the hook 159
- Remove the discharge grille 161
- Remove the outdoor fan fixing nut m8 161
- Slide the discharge grille downward to unfasten the 2 hooks at the top 161
- Wrench size 13 mm 161
- Remove the 2 screws on the partition plate 1 162
- Remove the screw at the bottom left of the front 162
- Remove the screw at the bottom of the left side 162
- Remove the screw at the bottom of the back side 163
- The front panel 1 has a hook on its front lift the front panel 1 163
- Be sure to detach the front panel 1 carefully so as not to deform 164
- Remove the front panel 1 164
- Remove the rear panel 164
- Remove the screw on the partition plate 2 164
- Remove the 3 screws on the wire fixing plate 165
- Remove the wire fixing plate and the insulation 165
- Slide the partition plate 2 to the left and remove it 165
- Release the holder of the thermistor 166
- Release the thermistor wire from the groove 166
- Remove the 3 screws on the rear panel 166
- The holder is secured in the clearances of the outdoor heat exchanger fins 166
- Lift the rear panel upward to unfasten the 2 hooks 167
- Remove the screw on the bottom frame 167
- Remove the screw on the stop valve mounting plate 167
- Remove the rear panel 168
- Removal of electrical box 169
- Removal of pcb 173
- Lift up and remove the main pcb 175
- Remove the 3 screws of the main pcb 175
- See page 10 for detail of the main pcb 175
- Unfasten the 4 hooks 175
- Removal of fan motor 176
- Removal of coils thermistors 177
- Pull out the outdoor heat exchanger thermistor 178
- Remove the sound blanket top upper 178
- Remove the thermistors 178
- Slightly open the sound blanket outer 178
- Remove the discharge pipe thermistor 179
- Removal of sound blanket 180
- Remove the sound blanket inner 182
- Removal of compressor 183
- Others 75 184
- Part 8 others 184
- Others 185
- Trial operation 185
- Cut the address setting jumper j4 186
- Cut the address setting jumper ja on the pcb 186
- Field settings 186
- For the location of the jumper refer to page 186
- For the location of the switch refer to page 186
- How to set the different addresses 186
- Indoor unit pcb 186
- Jumper and switch settings 186
- 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 addresses both the indoor unit pcb and the wireless remote controller need alteration 186
- When 2 units are installed in 1 room 186
- Wireless remote controller 186
- Application of silicon grease to a power transistor and a diode bridge 187
- Diode bridge diode bridge rectifier stack etc 187
- Ng foreign object ng not evenly applied ok evenly applied silicon grease 187
- Not applied paper waste 187
- Power transistor trm tpm igbt ipm spm etc 187
- Take out a pcb 187
- Part 9 appendix 188
- Piping diagrams 79 188
- Wiring diagrams 81 188
- Appendix 179 189
- Ftx50 60gv1b ftx71gv1b 189
- Indoor unit 189
- Piping diagrams 189
- Sibe041029 piping diagrams 189
- Appendix 190
- Outdoor unit 190
- Piping diagrams sibe041029 190
- Rx50 60g2v1b 190
- Rx71gv1b 190
- Appendix 181 191
- Ftx50 60 71gv1b 191
- Indoor unit 191
- Outdoor unit 191
- Rx50g2v1b 191
- Sibe041029 wiring diagrams 191
- Wiring diagrams 191
- Appendix 192
- D050706k 192
- D053931j 192
- Rx60g2v1b 192
- Rx71gv1b 192
- Wiring diagrams sibe041029 192
- 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 193
- Cautions on product corrosion 193
- 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 193
- Http www daikin com global_ac 193
- If you have any enquiries please contact your local importer distributor and or retailer 193
- 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 193
- Sibe041029 printed in japan 03 2010 b ak 193
- 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 193
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