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Daikin ATXS35G2V1B [2/179] Indoor unit
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SiBE04-808_C
i Table of Contents
Inverter Pair
Wall Mounted Type
G-Series
zCooling Only
Indoor Unit
FTXS20G2V1B
FTXS25G2V1B
FTXS35G2V1B
FTXS42G2V1B
FTXS50G2V1B
Outdoor Unit
RKS20G2V1B RKS20G2V1B9
RKS25G2V1B RKS25G2V1B9
RKS35G2V1B RKS35G2V1B9
RKS42G2V1B
RKS50G2V1B
zHeat Pump
Indoor Unit
FTXS20G2V1B ATXS20G2V1B
FTXS25G2V1B ATXS25G2V1B
FTXS35G2V1B ATXS35G2V1B
FTXS42G2V1B ATXS42G2V1B
FTXS50G2V1B ATXS50G2V1B
Outdoor Unit
RXS20G2V1B RXS20G2V1B9 ARXS20G2V1B ARXS20G3V1B
RXS25G2V1B RXS25G2V1B9 ARXS25G2V1B ARXS25G3V1B
RXS35G2V1B RXS35G2V1B9 ARXS35G2V1B ARXS35G3V1B
RXS42G2V1B ARXS42G2V1B ARXS42G3V1B
RXS50G2V1B ARXS50G2V1B ARXS50G3V1B
ARXS20G4V1B
ARXS25G4V1B
ARXS35G4V1B
The removal procedure for each model is separately bound.
Refer to page 167 for the booklet number of
applicable model.
Содержание
- Inverter pair 1
- Manual 1
- Service 1
- Sibe04 808_c 1
- Wall mounted type g series 1
- Cooling only 2
- Heat pump 2
- Indoor unit 2
- Inverter pair wall mounted type g series 2
- Outdoor unit 2
- Function of thermistor 6 3 control specification 7 3
- Functions 3
- Indoor unit 2 2 outdoor unit 4 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 1 3
- Part 4 function and control 2 3
- Specifications 3
- Table of contents 3
- Check 30 4
- Ftxs20 25 35 42 50g2v1b 3 2 atxs20 25 35 42 50g2v1b 5 4
- Part 5 remote controller 2 4
- Part 6 service diagnosis 7 4
- Problem symptoms and measures 0 3 service check function 1 4
- Troubleshooting 7 4
- Troubleshooting with led 9 4
- Part 7 trial operation and field settings 44 5
- Part 8 appendix 56 5
- Piping diagrams 57 5
- Pump down operation 45 2 forced cooling operation 46 3 trial operation 48 4 field settings 50 5
- Removal procedure booklet no 67 5
- Silicon grease on power transistor diode bridge 55 5
- Wiring diagrams 63 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
- Cooling only 12
- Functions 12
- Functions sibe04 808_c 12
- Holding functions no functions 12
- List of functions 12
- Heat pump 13
- Holding functions no functions 13
- List of functions 3 13
- Sibe04 808_c functions 13
- Functions sibe04 808_c 14
- Holding functions no functions 14
- List of functions 14
- Holding functions no functions 15
- List of functions 5 15
- Sibe04 808_c functions 15
- Part 2 specifications 16
- Specifications 16
- Cooling only 17
- Hz 220 230 240 v 17
- Sibe04 808_c specifications 17
- Specifications 17
- Specifications 7 17
- Hz 220 230 240 v 18
- Specifications 18
- Specifications sibe04 808_c 18
- Hz 220 230 240 v 19
- Sibe04 808_c specifications 19
- Specifications 9 19
- Heat pump 20
- Hz 220 230 240 v 20
- Specifications 20
- Specifications sibe04 808_c 20
- Hz 220 230 240 v 21
- Sibe04 808_c specifications 21
- Specifications 11 21
- Hz 220 230 240 v 22
- Specifications 22
- Specifications sibe04 808_c 22
- Hz 220 230 240 v 23
- Sibe04 808_c specifications 23
- Specifications 13 23
- Hz 220 230 240 v 24
- Specifications 24
- Specifications sibe04 808_c 24
- Hz 220 230 240 v 25
- Sibe04 808_c specifications 25
- Specifications 15 25
- Hz 220 230 240 v 26
- Specifications 26
- Specifications sibe04 808_c 26
- Hz 220 230 240 v 27
- Sibe04 808_c specifications 27
- Specifications 17 27
- Hz 220 230 240 v 28
- Specifications 28
- Specifications sibe04 808_c 28
- Hz 220 230 240 v 29
- Sibe04 808_c specifications 29
- Specifications 19 29
- Hz 220 230 240 v 30
- Specifications 30
- Specifications sibe04 808_c 30
- Indoor unit 2 2 outdoor unit 4 31
- Part 3 printed circuit board connector wiring diagram 31
- Indoor unit 32
- Outdoor unit 34
- Rk x s20 35g2v1b arxs20 35g2v1b 34
- Rk x s20 35g2v1b9 arxs20 35g3v1b arxs20 35g4v1b 36
- Rk x s42g2v1b arxs42g2v1b arxs42g3v1b 38
- Rk x s50g2v1b arxs50g2v1b 39
- Arxs50g3v1b 40
- Function of thermistor 6 3 control specification 7 42
- Main functions 3 42
- Part 4 function and control 42
- Frequency principle 43
- Main functions 43
- Temperature control 43
- Comfortable air conditioning a fine adjustment is integrated to keep the room temperature constant 44
- Drawing of inverter the following drawing shows a schematic view of the inverter principle 44
- Energy saving heating and cooling once the set temperature is reached the energy saving operation enables to maintain the room temperature at low power 44
- Even during extreme cold weather high capacity is achieved it is maintained even when the outdoor temperature is 2 c 44
- Forced cooling operation refer to page 146 for detail 44
- Frequency limits the following functions regulate the minimum and maximum frequency 44
- Inverter features the inverter provides the following features 44
- Quick heating and quick cooling the rotation speed of the compressor is increased when starting the heating or cooling this enables to reach the set temperature quickly 44
- The regulating capacity can be changed according to the changes in the outdoor temperature and cooling heating load 44
- Airflow direction control 45
- Fan speed control for indoor unit 46
- Detail the microcomputer automatically sets the temperature and airflow rate the difference between the room thermistor temperature at start up and the target temperature is divided into two zones then the unit operates in an appropriate capacity for each zone to maintain the temperature and humidity at a comfortable level 47
- 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 setting buttons are inoperable 47
- Program dry operation 47
- Y 0 ºc 47
- Zone a thermostat off 47
- Zone b zone b 47
- Zone c thermostat on 47
- Automatic operation 48
- Detail thermostat off condition 49
- Function and control 39 49
- Outline thermostat control is based on the difference between the room thermistor temperature and the target temperature 49
- Refer to temperature control on page 33 for detail 49
- Sibe04 808_c main functions 49
- The monitoring time has passed while the temperature difference is in the zone b cooling dry 10 minutes heating 10 seconds 49
- The operation turns on in any zones except a 49
- The system resumes from defrost control in any zones except a 49
- The temperature difference is in the zone a 49
- The temperature difference returns to the zone c after being in the zone a 49
- Thermostat control 49
- Thermostat on condition 49
- 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 50
- Function and control 50
- Main functions sibe04 808_c 50
- Night set mode 50
- Outline when the off timer is set the night set mode is automatically activated the night set mode keeps the airflow rate setting 50
- Econo operation 51
- Area intelligent eye operation 52
- Area intelligent eye sensor is divided into 2 areas and detects humans in each area 52
- Detail 1 detection method of intelligent eye 52
- Function and control 52
- Image of 2 area intelligent eye 52
- Main functions sibe04 808_c 52
- Outline ftk x s series the following functions can be performed by a motion sensor intelligent eye 1 reduction of the capacity when there is nobody in the room in order to save electricity energy saving operation 2 dividing the room into plural areas and detecting existence of humans in each area moving the airflow direction to the area with no human automatically to avoid direct airflow on humans 52
- The microcomputer in the 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 and when the on signal continues 3 sec it judges human is in the room as the motion signal is on 52
- This sensor detects human motion by receiving infrared rays and displays the pulse wave output 52
- Airflow direction in 2 area intelligent eye operation 53
- Area a area b 53
- Detection method the opposite area of detected area is set as the target direction 53
- Detection signal on in both area a and b shift the airflow direction to area b left side 2 detection signal on in area a shift the airflow direction to area b left side 3 detection signal on in area b shift the airflow direction to area a right side 4 detection signal off in both area a and b no change 53
- For dry operation you cannot set the temperature with remote controller but internally the target temperature is shifted 53
- Function and control 43 53
- In case of fan operation the fan speed reduces by 60 rpm 53
- Indoor unit 53
- Left right 53
- Motions for example in cooling 53
- Others 53
- Sibe04 808_c main functions 53
- Top view 53
- When the detection signal is off for 20 minutes in both area a and b the unit starts energy saving operation 53
- When the 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 dry 2 c higher heating 2 c lower auto according to the operation mode at that time 53
- Detail 1 detection method by intelligent eye 54
- For dry operation you cannot set the temperature with a remote controller but the target temperature is shifted internally 54
- Function and control 54
- In fan operation the fan speed is reduced by 60 rpm 54
- Intelligent eye operation 54
- Main functions sibe04 808_c 54
- Others 54
- Outline atxs series this function detects the existence of humans in the room with a motion sensor intelligent eye and reduces the capacity when there is nobody in the room in order to save electricity 54
- The microcomputer in the indoor unit carries out a sampling every 20 msec and if it detects 10 cycles of the wave in 1 second in total corresponding to 20 msec 10 200 msec it judges humans are in the room as the motion signal is on 54
- The motions for example in cooling 54
- The sensor detects human motion by receiving infrared rays and displays the pulse wave output 54
- When the microcomputer does not have a signal from the sensor in 20 minutes it judges that nobody is in the room and operates the unit at a temperature shifted from the target temperature cooling dry 2 c higher heating 2 c lower automatic according to the operation mode at that time 54
- 50 rpm 55
- Detail when the powerful button is pressed the fan speed and target temperature are converted to the following states for 20 minutes 55
- Ex powerful operation in cooling 55
- Inverter powerful operation 55
- 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 55
- Clock setting 56
- Example 57
- Function and control 47 57
- Program 1 program 2 program 3 program 4 57
- Sibe04 808_c main functions 57
- The same timer settings are made for the week from monday through friday while different timer settings are made for the weekend 57
- Using in these cases of weekly timer 57
- Weekly timer operation 57
- C 27 c 58
- Monday 58
- Press to select the desired day of the 58
- Press to select the desired mode 58
- Setting mode 58
- To use weekly timer operation 58
- Week and reservation number 58
- Press to complete the setting 59
- Press to select the desired 59
- Press to select the desired time 59
- Temperature 59
- Day and number on off time temperature 60
- Setting displays 60
- A reservation made once can be copied another day of the week the whole reservation of the selected day of the week will be copied 61
- C 27 c 61
- Copy mode 61
- Function and control 51 61
- Monday 61
- Press to activate copy mode 61
- Press to confirm the day of the week 61
- Press to select the destination day of 61
- Sibe04 808_c main functions 61
- The week 61
- The whole reservation of the selected day of the week will be copied 61
- To be copied 61
- Tuesday to friday 61
- Confirmation copy paste normal 62
- Press to complete the setting 62
- Setting displays 62
- Confirming a reservation 63
- Normal confirmation 63
- Press to exit confirming mode 63
- Press to select the day of the week and 63
- Press while is displayed on the lcd 63
- Setting displays 63
- The reservation number to be confirmed 63
- To deactivate weekly timer operation 63
- All reservations 64
- Hold for 5 seconds 64
- Hold for 5 seconds while normal display 64
- Select the day of the week to be canceled 64
- The individual reservation 64
- The reservations for each day of the week 64
- To delete reservations 64
- Auto restart function 65
- Hot start function 65
- Indoor unit on off button 65
- Other functions 65
- Signal receiving sign 65
- Titanium apatite photocatalytic air purifying filter 65
- Function of thermistor 66
- Control specification 67
- Detail cooling only model 67
- Function and control 57 67
- Heat pump model 67
- Mode hierarchy 67
- Note unless specified otherwise a dry operation command is regarded as cooling operation 67
- Outline air conditioner control has normal operation mode forced operation mode and power transistor test mode for installation and servicing 67
- Sibe04 808_c control specification 67
- Frequency control 68
- Determine lower limit frequency 69
- Determine prohibited frequency 69
- Determine upper limit frequency 69
- For limiting lower limit frequency management is carried out only when the frequency rises 69
- Frequency management when other controls are functioning 69
- I control if the operating frequency does not change for more than a certain fixed time the frequency is adjusted according to the d value when the d value is low the frequency is lowered when the d value is high the frequency is increased 69
- Indoor frequency command d signal the difference between the room thermistor temperature and the target temperature is taken as the d signal and is used for frequency command 69
- Pi control determine frequency up down by d signal 1 p control the d value is calculated in each sampling time 15 20 seconds and the frequency is adjusted according to its difference from the frequency previously calculated 69
- Th off thermostat off 69
- The maximum value is set as a lower limit frequency among the frequency lower limits of the following functions four way valve operation compensation draft prevention pressure difference upkeep 69
- The minimum value is set as an upper limit frequency among the frequency upper limits of the following functions compressor protection input current discharge pipe temperature heating peak cut freeze up protection defrost 69
- There is a certain prohibited frequency such as a power supply frequency 69
- Upper and lower limit of frequency by pi control the frequency upper and lower limits are set according to the command of the indoor unit when the indoor or outdoor unit quiet operation command comes from the indoor unit the upper limit frequency is lower than the usual setting 69
- When frequency is dropping frequency management is carried out only when the frequency drops 69
- When starting the compressor the frequency is initialized according to the 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 69
- Controls at mode changing start up 70
- Four way valve switching 70
- Preheating control 70
- 3 minute standby 71
- Compressor protection function 71
- Detail starting conditions 1 when the compressor starts and the four way valve switches from off to on 2 when the four way valve switches from on to off during operation 3 when the compressor starts after resetting 4 when the compressor starts after the fault of four way valve switching the lower limit of frequency keeps a hz for b seconds with any conditions 1 through 4 above 71
- Four way valve operation compensation 71
- Outline at the beginning of the operation as the four way valve is switched the pressure difference to activate the four way valve is acquired by having output frequency which is more than a certain fixed frequency for a certain fixed time 71
- Turning on the compressor is prohibited for 3 minutes after turning it off except when defrosting 71
- When turning the compressor from off to on the upper limit of frequency is set as follows the function is not activated when defrosting 71
- Detail 72
- Discharge pipe temperature control 72
- 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 the discharge pipe temperature from rising further 72
- After 2 seconds in this zone the compressor is stopped dropping zone 73
- After this the output frequency is lowered by 2 hz every second until it reaches the keep zone keep zone 73
- Detail 73
- Frequency control in each zone stop zone 73
- Input current control 73
- Limit of the frequency is canceled 73
- Outline the microcomputer calculates the input current while the compressor is running and sets the frequency upper limit from the input current in case of heat pump models this control which is the upper limit control of the frequency takes priority over the lower limit of control of four way valve operation compensation 73
- Rk x s20 50g2v1b arxs20 50g2v1b 73
- The present maximum frequency goes on reset zone 73
- The upper limit of the compressor frequency is defined as operation frequency 2 hz 73
- Limitation of current dropping and stop value according to the outdoor temperature 74
- Rk x s20 35g2v1b9 arxs20 35g3v1b arxs20 35g4v1b arxs42 50g3v1b 74
- The current drops when outdoor temperature becomes higher than a certain level depending on the model 74
- Detail 75
- Detail the operating frequency limitation is judged with the indoor heat exchanger temperature 75
- Freeze up protection control 75
- Heating peak cut control 75
- 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 75
- Outline during heating operation the indoor heat exchanger temperature determines the frequency upper limit to prevent abnormal high pressure 75
- Liquid compression protection function 76
- Outdoor fan control 76
- Conditions for canceling defrost the judgment is made with the outdoor heat exchanger temperature b c 77
- Defrost control 77
- Detail conditions for starting defrost 77
- More than a minutes of accumulated time have passed since the start of the operation or ending the previous defrosting 77
- 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 77
- The compressor operates for 6 minutes 77
- The starting conditions are determined with the outdoor temperature and the outdoor heat exchanger temperature 77
- The system is in heating operation 77
- Control specification sibe04 808_c 78
- Detail the followings are the examples of electronic expansion valve control which function in each operation mode 78
- Electronic expansion valve control 78
- Function and control 78
- H holding functions no functions 78
- 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 the frequency changes 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 target discharge pipe temperature control 78
- Control when the frequency changes 79
- Fully closing with power on 79
- High discharge pipe temperature control 79
- Opening limit control 79
- Pressure equalizing control 79
- Starting operation control 79
- Control for disconnection of the discharge pipe thermistor 80
- Target discharge pipe temperature control 80
- Detection of overcurrent and overload 81
- Malfunctions 81
- Refrigerant shortage control 81
- Sensor malfunction detection 81
- Ftxs20 25 35 42 50g2v1b 3 2 atxs20 25 35 42 50g2v1b 5 82
- Part 5 remote controller 82
- 1 powerful operation p 5 2 model type setting p 50 83
- Button 83
- Display lcd 83
- Fan setting button 83
- Ftxs20 25 35 42 50g2v1b 83
- Note refer to the operation manual of applicable model for detail you can download operation manual from distributor s page distributor s page product information operation installation manual url http global daikin com daikin global distributors_admin user_mng login php 83
- On off button 83
- Powerfu 83
- Reference refer to the following pages for detail 83
- Remote controller 73 83
- Sibe04 808_c ftxs20 25 35 42 50g2v1b 83
- Signal transmitter 83
- Temperature adjustment buttons 83
- The remote controller is compatible with both cooling only and heat pump model 83
- Button 84
- Comfort sensor button 84
- Mode button 84
- Note refer to the operation manual of applicable model for detail you can download operation manual from distributor s page distributor s page product information operation installation manual url http global daikin com daikin global distributors_admin user_mng login php 84
- Off timer button 84
- On timer button 84
- Open the front cover 84
- Quiet button 84
- Reference refer to the following pages for detail 84
- Select button 84
- Timer cancel button 84
- Weekly button 84
- Atxs20 25 35 42 50g2v1b 85
- Button 85
- Display lcd 85
- Note refer to the operation manual of applicable model for detail you can download operation manuals from distributor s page distributor s page product information operation installation manual url http global daikin com daikin global distributors_admin user_mng login php 85
- On off button 85
- Powerfu 85
- Reference refer to the following pages for detail 85
- Signal transmitter 85
- Temperature adjustment buttons 85
- Button 86
- Comfort sensor button 86
- Fan setting button 86
- Intelligent eye operatio 86
- Mode button 86
- Off timer button 86
- On timer button 86
- Quiet button 86
- Reset button 86
- Timer cancel button 86
- Timer setting button 86
- Check 30 87
- Part 6 service diagnosis 87
- Problem symptoms and measures 0 3 service check function 1 87
- Troubleshooting 7 87
- Troubleshooting with led 9 87
- Indoor unit 89
- Outdoor unit 89
- Troubleshooting with led 89
- Problem symptoms and measures 90
- Arc452 series 91
- Check method 1 1 when the timer cancel button is held down for 5 seconds 91
- Is displayed on the temperature display screen 91
- Note 1 a short beep or two consecutive beeps 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 3 not all the error codes are displayed when you cannot find the error code try the check method 2 refer to page 82 91
- Press the timer cancel button repeatedly until a long beep sounds 91
- Service check function 91
- The code indication changes in the sequence shown below 91
- Arc433 series 94
- Check method 1 1 when the timer cancel button is held down for 5 seconds 94
- Is displayed on the temperature display screen 94
- Note 1 a short beep or two consecutive beeps 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 3 not all the error codes are displayed when you cannot find the error code try the check method 2 refer to page 85 94
- Press the timer cancel button repeatedly until a long beep sounds 94
- The code indication changes in the sequence shown below 94
- Timer cancel button 94
- Displayed only when system down occurs 97
- Error codes and description 97
- Troubleshooting 97
- Defective indoor unit pcb 98
- Disconnection of connector 98
- Error code 98
- Error decision conditions the system cannot set the internal settings 98
- Indoor unit pcb abnormality 98
- Method of error detection the system checks if the circuit works properly within the microcomputer of the indoor unit 98
- Note check the following connector 98
- Reduction of power supply voltage 98
- Supposed causes 98
- Troubleshooting 98
- Wrong models interconnected 98
- Check no 1 refer to p 30 99
- Clogged air filter of the indoor unit 99
- Defective indoor heat exchanger thermistor 99
- Defective indoor unit pcb 99
- Dust accumulation on the indoor heat exchanger 99
- Error code 99
- Error decision conditions 99
- Freeze up protection control during cooling operation the freeze up protection control operation halt is activated according to the temperature detected by the indoor heat exchanger thermistor 99
- Freeze up protection control during cooling operation the indoor heat exchanger temperature is below 0 c 99
- Freeze up protection control or heating peak cut control 99
- Heating peak cut control during heating operation the indoor heat exchanger temperature is above 65 c 99
- Heating peak cut control during heating operation the temperature detected by the indoor heat exchanger thermistor is used for the heating peak cut control operation halt outdoor fan stop etc 99
- Method of error detection 99
- Short circuited air 99
- Supposed causes 99
- Troubleshooting 99
- Fan motor dc motor or related abnormality 100
- Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged 101
- Caution 101
- Check no 2 refer to p 31 101
- Service diagnosis 91 101
- Sibe04 808_c troubleshooting 101
- Troubleshooting 101
- Thermistor or related abnormality indoor unit 102
- Refrigerant shortage 103
- Closed stop valve 104
- Defective electronic expansion valve 104
- Disconnection of the discharge pipe thermistor indoor or outdoor heat exchanger thermistor room or outdoor temperature thermistor 104
- If the error repeats the system is shut down 104
- Poor compression performance of compressor 104
- Refrigerant shortage detection iii 20 25 35 class only when the difference of the temperature is smaller than k c it is regarded as refrigerant shortage 104
- Refrigerant shortage refrigerant leakage 104
- Reset condition continuous run for about 60 minutes without any other error 104
- Supposed causes 104
- Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged 105
- Caution 105
- Check no 1 refer to p 30 105
- Check no 2 refer to p 32 105
- Service diagnosis 95 105
- Sibe04 808_c troubleshooting 105
- Troubleshooting 105
- Low voltage detection or over voltage detection 106
- Caution be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged 107
- Service diagnosis 97 107
- Sibe04 808_c troubleshooting 107
- Troubleshooting 107
- Signal transmission error between indoor unit and outdoor unit 108
- Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged 109
- Caution 109
- Check no 1 refer to p 31 109
- Service diagnosis 99 109
- Sibe04 808_c troubleshooting 109
- Troubleshooting 109
- Signal transmission error on outdoor unit pcb rk x s50g2v1b arxs50g2v1b only 110
- Defective indoor unit pcb 111
- Defective outdoor unit pcb 111
- Error code 111
- Error decision conditions the pair type and multi type are interconnected 111
- Method of error detection the supply power is detected for its requirements different from pair type and multi type by the indoor outdoor transmission signal 111
- Supposed causes 111
- Troubleshooting 111
- Unspecified voltage between indoor unit and outdoor unit 111
- Wrong indoor unit pcb or outdoor unit pcb mounted 111
- Wrong models interconnected 111
- Wrong wiring of connecting wires 111
- Broken harness between pcbs 112
- Defective outdoor unit pcb 112
- Error code 112
- Error decision conditions 112
- Method of error detection 112
- Momentary fall of voltage 112
- Momentary power failure 112
- Outdoor unit pcb abnormality 112
- Supposed causes 112
- The microprocessor program runs out of control 112
- The system checks if the microprocessor is working in order 112
- The system checks if the zero cross signal comes in properly 112
- The zero cross signal is not detected 112
- Troubleshooting 20 25 35 class arxs50g3v1b 112
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 113
- Check the voltage between no and no on the outdoor terminal board 113
- Service diagnosis 103 113
- Sibe04 808_c troubleshooting 113
- Troubleshooting 42 class 113
- Caution be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged 114
- Service diagnosis 114
- Troubleshooting rk x s50g2v1b arxs50g2v1b 114
- Troubleshooting sibe04 808_c 114
- Ol activation compressor overload 115
- Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged 116
- Caution 116
- Check no 1 refer to p 30 116
- Check no 2 refer to p 32 116
- Check no 3 refer to p 33 116
- Check no 4 refer to p 33 116
- Note ol q1l activating temperature 120 c ol q1l recovery temperature 95 c 116
- Service diagnosis 116
- Troubleshooting 116
- Troubleshooting sibe04 808_c 116
- A compressor lock is detected by the current waveform generated when applying high frequency voltage to the motor 117
- Check no 5 refer to p 34 117
- Compressor harness disconnected 117
- Compressor lock 117
- Compressor locked 117
- Error code 117
- Error decision conditions 20 25 35 42 class 117
- If the error repeats the system is shut down 117
- Method of error detection a compressor lock is detected by checking the compressor running condition through the position detection circuit 117
- Operation stops due to overcurrent 117
- Reset condition continuous run for about 11 minutes without any other error 117
- Reset condition continuous run for about 5 minutes without any other error 117
- Supposed causes 117
- Troubleshooting 117
- Check no 6 refer to p 36 118
- Dc fan lock 118
- Defective fan motor 118
- Defective outdoor unit pcb 118
- Disconnection of the fan motor 118
- Error code 118
- Error decision conditions 118
- Foreign matter stuck in the fan 118
- If the error repeats the system is shut down 118
- Method of error detection an error is determined with the high voltage fan motor rotation speed detected by the hall ic 118
- Reset condition continuous run for about 11 minutes 20 25 35 42 class or 5 minutes 50 class without any other error 118
- Supposed causes 118
- The fan does not start in about 15 60 seconds even when the fan motor is running 118
- Troubleshooting 118
- Check no 5 refer to p 34 119
- Check no 7 refer to p 37 119
- Check no 8 refer to p 37 119
- Defective compressor 119
- Defective outdoor unit pcb 119
- Defective power module 119
- Error code 119
- Error decision conditions the current exceeds about 9 5 20 a for 2 seconds with the compressor running the upper limit of the current decreases when the outdoor temperature exceeds a certain level 119
- Input overcurrent detection 119
- Method of error detection an input overcurrent is detected by checking the input current value with the compressor running 119
- Outdoor temperature is out of operation range 119
- Short circuit 119
- Supposed causes 119
- Troubleshooting 119
- Four way valve abnormality 120
- Caution be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged 121
- Check no 1 refer to p 30 121
- Check no 3 refer to p 33 121
- Check no 4 refer to p 33 121
- Service diagnosis 111 121
- Sibe04 808_c troubleshooting 121
- Troubleshooting 121
- Check no 1 refer to p 30 122
- Check no 2 refer to p 32 122
- Check no 4 refer to p 33 122
- Defective discharge pipe thermistor defective outdoor heat exchanger thermistor or outdoor temperature thermistor 122
- Defective electronic expansion valve or coil 122
- Defective four way valve 122
- Defective outdoor unit pcb 122
- Defective stop valve 122
- Discharge pipe temperature control 122
- Error code 122
- Error decision conditions 122
- Frequency 122
- If the error repeats the system is shut down 122
- If the temperature detected by the discharge pipe thermistor rises above a c the compressor stops 122
- Method of error detection an error is determined with the temperature detected by the discharge pipe thermistor 122
- Refrigerant shortage 122
- Reset condition continuous run for about 60 minutes without any other error 122
- Supposed causes 122
- The error is cleared when the discharge pipe temperature has dropped below b c 122
- Troubleshooting 122
- Water mixed in refrigerant 122
- Check no 1 refer to p 30 123
- Check no 2 refer to p 32 123
- Check no 7 refer to p 37 123
- Check no 8 refer to p 37 123
- Check no 9 refer to p 38 123
- Defective electronic expansion valve or coil 123
- Defective outdoor fan motor 123
- Defective outdoor heat exchanger thermistor 123
- Defective outdoor unit pcb 123
- Defective stop valve 123
- Dirty outdoor heat exchanger 123
- Error code 123
- Error decision conditions 123
- High pressure control in cooling 123
- Method of error detection 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 123
- Supposed causes 123
- The error is cleared when the temperature drops below about 50 55 c depending on the model 123
- The installation space is not large enough 123
- The temperature sensed by the outdoor heat exchanger thermistor rises above about 60 65 c depending on the model 123
- Troubleshooting 123
- 25 35 42 class arxs50g3v1b 124
- Broken or disconnected harness 124
- Compressor system sensor abnormality 124
- Defective outdoor unit pcb 124
- Error code 124
- Error decision conditions 124
- Method of error detection the system checks the dc current before the compressor starts 124
- Supposed causes 124
- The dc current before compressor start up is out of the range 0 4 v sensor output converted to voltage value 124
- The dc voltage before compressor start up is below 50 v 124
- Troubleshooting 124
- Defective compressor 125
- Defective outdoor unit pcb 125
- Disconnection of compressor harness 125
- Disconnection of reactor 125
- Error code 125
- Error decision conditions 125
- Method of error detection 125
- Rk x s50g2v1b arxs50g2v1b 125
- Supposed causes 125
- The compressor current does not run when the compressor starts 125
- The power supply voltage and the dc voltage is obviously low or high 125
- The system checks the compressor current right after the compressor starts 125
- The system checks the power supply voltage and the dc voltage before the compressor starts 125
- Troubleshooting 125
- Position sensor abnormality 126
- Caution be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged 127
- Check no 0 refer to p 38 127
- Check no 5 refer to p 34 127
- Check no 8 refer to p 37 127
- Service diagnosis 117 127
- Sibe04 808_c troubleshooting 127
- Troubleshooting 20 25 35 42 class arxs50g3v1b 127
- Caution be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged 128
- Check no 5 refer to p 34 128
- Check no 8 refer to p 37 128
- Service diagnosis 128
- Troubleshooting rk x s50g2v1b arks50g2v1b 128
- Troubleshooting sibe04 808_c 128
- Dc voltage current sensor abnormality 20 25 35 42 class only 129
- Ct or related abnormality rk x s50g2v1b arxs50g2v1b only 130
- Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged 131
- Caution 131
- Check no 1 refer to p 40 131
- Check no 5 refer to p 34 131
- Service diagnosis 121 131
- Sibe04 808_c troubleshooting 131
- Troubleshooting 131
- Thermistor or related abnormality outdoor unit 132
- Caution 133
- Check no 1 refer to p 30 133
- Discharge pipe thermistor 133
- Outdoor heat exchanger thermistor 133
- Outdoor temperature thermistor 133
- Service diagnosis 123 133
- Sibe04 808_c troubleshooting 133
- Troubleshooting in case of 133
- Defective outdoor fan motor 134
- Defective outdoor unit pcb 134
- Defective radiation fin thermistor 134
- Disconnection of connector 134
- Electrical box temperature rise 134
- Error code 134
- Error decision conditions 134
- Method of error detection an electrical box temperature rise is detected by checking the radiation fin thermistor with the compressor off 134
- Short circuit 134
- Supposed causes 134
- The error is cleared when the radiation fin temperature drops below b c 134
- To cool the electrical components the outdoor fan starts when the radiation fin temperature rises above c c and stops when it drops below b c 134
- With the compressor off the radiation fin temperature is above a c 134
- A c b c c c 135
- Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged 135
- Caution 135
- Check no 7 refer to p 37 135
- Check no 9 refer to p 38 135
- Rk x s20 35g2v1b arxs20 35g2v1b 80 70 80 135
- Rk x s20 35g2v1b9 arxs20 35g3v1b arxs20 35g4v1b 98 75 83 135
- Rk x s42g2v1b arxs42g2v1b arxs42g3v1b 80 70 75 135
- Rk x s50g2v1b arxs50g2v1b 95 80 85 arxs50g3v1b 122 64 113 135
- Service diagnosis 125 135
- Sibe04 808_c troubleshooting 135
- Troubleshooting 135
- Radiation fin temperature rise 136
- Arxs50g3v1b 85 137
- Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged 137
- Caution 137
- Check no 7 refer to p 37 137
- Check no 9 refer to p 38 137
- Note refer to silicon grease on power transistor diode bridge on page 155 for detail 137
- Rk x s20 35g2v1b arxs20 35g2v1b 90 rk x s20 35g2v1b9 arxs20 35g3v1b arxs20 35g4v1b 98 137
- Rk x s42g2v1b arxs42g2v1b arxs42g3v1b 92 137
- Rk x s50g2v1b arxs50g2v1b 105 137
- Service diagnosis 127 137
- Sibe04 808_c troubleshooting 137
- Troubleshooting 137
- Output overcurrent detection 138
- Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged 139
- Caution 139
- Check no 2 refer to p 41 139
- Check no 5 refer to p 34 139
- Check no 7 refer to p 37 139
- Check no 8 refer to p 37 139
- Service diagnosis 129 139
- Sibe04 808_c troubleshooting 139
- Troubleshooting 139
- Check no 1 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 140
- Thermistor resistance check 140
- When the connector of indoor heat exchanger thermistor is soldered on the pcb remove the thermistor and measure the resistance 140
- When the room temperature thermistor is directly mounted on the display pcb remove the display pcb from the control pcb to measure the resistance 140
- Check no 1 measure the power supply waveform between no 1 and no 2 on the terminal board and check the waveform disturbance 141
- Check no 2 1 check the connection of connector 2 check the motor power supply voltage output pins 4 7 3 check the motor control voltage pins 4 3 4 check the rotation command voltage pins 4 2 5 check the rotation pulse pins 4 1 141
- Check to see if the power supply waveform is a sine wave fig 141
- Check to see if there is waveform disturbance near the zero cross sections circled in fig 141
- Fan motor connector output check 141
- Fig fig 141
- Power supply waveforms check 141
- Service diagnosis 131 141
- Sibe04 808_c check 141
- Check no 2 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 generates a latching sound 3 if the ev does not generate a 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 3 6 2 5 4 5 between the pins 1 6 2 6 3 6 4 6 for the harness 5p models if there is no continuity between the pins the ev coil is faulty 142
- Check sibe04 808_c 142
- Electronic expansion valve check 142
- If the continuity is confirmed in step 3 the outdoor unit pcb is faulty 142
- Note please note that the latching sound varies depending on the valve type 142
- Service diagnosis 142
- Check no 3 143
- Check no 4 143
- Four way valve performance check 143
- Inverter units refrigerant system check 143
- Service diagnosis 133 143
- Sibe04 808_c check 143
- Inverter analyzer check 144
- Check no 6 rk x s20 50g2v1b arxs20 50g2v1b arxs42 50g3v1b make sure that the voltage of 320 30 v is applied 1 set operation off and power off disconnect the connector s70 2 check that the voltage between the pins 4 7 is 320 vdc 3 check that the control voltage between the pins 3 4 is 15 vdc 4 check that the rotation command voltage between the pins 2 4 is 0 15 vdc 5 keep operation off and power off connect the connector s70 6 check whether 2 pulses 0 15 vdc are output at the pins 1 4 when the fan motor is rotated 1 turn by hand 146
- Check sibe04 808_c 146
- Rk x s20 35g2v1b9 arxs20 35g3v1b arxs20 35g4v1b 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 146
- Rotation pulse check on the outdoor unit pcb 146
- Service diagnosis 146
- When the fuse is melted check the outdoor fan motor for proper function if ng in step 2 defective pcb replace the outdoor unit pcb if ng in step 4 defective hall ic replace the outdoor fan motor if ok in both steps 2 and 4 replace the outdoor unit pcb 146
- Check no 7 147
- Check no 8 147
- Discharge pressure check 147
- Installation condition check 147
- Service diagnosis 137 147
- Sibe04 808_c check 147
- Main circuit short check 148
- Outdoor fan system check 148
- Arxs50g3v1b 149
- Rk x s20 35g2v1b9 arxs20 35g3v1b arxs20 35g4v1b 149
- Rk x s42g2v1b arxs42g2v1b arxs42g3v1b 149
- Capacitor voltage check 150
- Check no 2 151
- Disconnect the compressor harness connector from the outdoor unit pcb to disengage the connector press the protrusion on the connector 151
- Follow the procedure below to measure resistance between the terminals of the power module and the terminals of the compressor with a multi tester evaluate the measurement results referring to the following table 151
- Note check to make sure that the voltage between and of the power module is approx 0 v before checking 151
- Power module check 151
- Rk x s20 35g2v1b arxs20 35g2v1b 151
- Rk x s20 35g2v1b9 arxs20 35g3v1b arxs20 35g4v1b 152
- Rk x s42g2v1b arxs42g2v1b arxs42g3v1b 152
- Arxs50g3v1b 153
- Rk x s50g2v1b arxs50g2v1b 153
- Part 7 trial operation and field settings 154
- Pump down operation 45 2 forced cooling operation 46 3 trial operation 48 4 field settings 50 154
- Silicon grease on power transistor diode bridge 55 154
- Pump down operation 155
- Forced cooling operation 156
- Indoor unit 156
- Outdoor unit rk x s20 35g2v1b arxs20 35g2v1b 156
- Caution when pressing the button do not touch the terminal board it has a high voltage and may cause electric shock 157
- Note 42 class models have no forced cooling operation on off button on the outdoor unit pcb carry out forced cooling operation from indoor unit 157
- Outdoor unit arxs50g3v1b 157
- Outdoor unit rk x s20 35g2v1b9 arxs20 35g3v1b arxs20 35g4v1b 157
- Outdoor unit rk x s50g2v1b arxs50g2v1b 157
- Sibe04 808_c forced cooling operation 157
- Trial operation and field settings 147 157
- 2 3 4 1 5 158
- Trial operation 158
- Field settings 160
- Model type setting 160
- When 2 units are installed in 1 room 160
- Standby electricity saving 161
- Facility setting jumper and switch cooling at low outdoor temperature 162
- Caution replace the pcb if you accidentally cut a wrong jumper jumpers are necessary for electronic circuit improper operation may occur if you cut any of them 164
- For the location of the jumper refer to page 22 164
- For the location of the switch jumper refer to page 2 164
- Indoor unit 164
- Jumper and switch settings 164
- Outdoor unit 164
- Silicon grease on power transistor diode bridge 165
- Part 8 appendix 166
- Piping diagrams 57 166
- Removal procedure booklet no 67 166
- Wiring diagrams 63 166
- Ftxs20 25 35 42g2v1b atxs20 25 35 42g2v1b ftxs50g2v1b atxs50g2v1b 167
- Indoor unit 167
- Piping diagrams 167
- Appendix 168
- Cooling only 168
- Outdoor unit 168
- Piping diagrams sibe04 808_c 168
- Rks20g2v1b rks20g2v1b9 168
- Rks25 35g2v1b rks25 35g2v1b9 168
- Appendix 159 169
- Rks42g2v1b 169
- Rks50g2v1b 169
- Sibe04 808_c piping diagrams 169
- Appendix 170
- Heat pump 170
- Piping diagrams sibe04 808_c 170
- Rxs20g2v1b arxs20g2v1b rxs20g2v1b9 arxs20g3v1b arxs20g4v1b 170
- Rxs25 35g2v1b arxs25 35g2v1b rxs25 35g2v1b9 arxs25 35g3v1b arxs25 35g4v1b 170
- Appendix 161 171
- Rxs42g2v1b arxs42g2v1b arxs42g3v1b 171
- Rxs50g2v1b arxs50g2v1b 171
- Sibe04 808_c piping diagrams 171
- Appendix 172
- Arxs50g3v1b 172
- Piping diagrams sibe04 808_c 172
- Appendix 163 173
- Ftxs20 25 35 42 50g2v1b atxs20 25 35 42 50g2v1b 173
- Indoor unit 173
- Outdoor unit 173
- Rk x s20 25 35g2v1b arxs20 25 35g2v1b 173
- Sibe04 808_c wiring diagrams 173
- Wiring diagrams 173
- Appendix 174
- Rk x s20 25 35g2v1b9 arxs20 25 35g3v1b arxs20 25 35g4v1b 174
- Rks42g2v1b 174
- Wiring diagrams sibe04 808_c 174
- Appendix 165 175
- D056145b 175
- D059601b 175
- Rks50g2v1b 175
- Rxs42g2v1b arxs42g2v1b arxs42g3v1b 175
- Sibe04 808_c wiring diagrams 175
- Appendix 176
- Arxs50g3v1b 176
- D079016 176
- Indoor 176
- Outdoor 176
- Rxs50g2v1b arxs50g2v1b 176
- Wiring diagrams sibe04 808_c 176
- Refer to the following booklets for removal procedure 177
- Removal procedure booklet no 177
- Revision history 178
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