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Daikin ARX20K2V1B [3/114] Version log
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SiBE041525F
Table of Contents ii
Version log
Month / Year Version Revised contents
01 / 2016 SiBE041525E (A)RX20~35K2
02 / 2016 SiBE041525F Include RX71K & FTX71KM
+ standard S21 connection
Содержание
- Inverter pair 1
- Manual 1
- Service 1
- Sibe041525f 1
- Wall mounted type ftx atx k series 1
- Ftx atx k series 2
- Heat pump 2
- Indoor unit 2
- Inverter pair 2
- Inverter pair wall mounted type ftx atx k series 2
- Outdoor unit 2
- Wall mounted type 2
- Version log 3
- Functions 4
- Icons used x 4
- Indoor unit 4
- Main functions 5 4
- Outdoor unit 2 4
- Part 1 list of functions 4
- Part 2 specifications 4
- Part 3 printed circuit board connector wiring diagram 4
- Part 4 functions and control 4 4
- Safety cautions vi 4
- Specifications 4
- Thermistor functions 5 3 control specification 6 4
- Check 9 5
- General problem symptoms and check items 4 2 troubleshooting with led 5 5
- Part 5 remote controller 0 5
- Part 6 service diagnosis 3 5
- Remote controller 1 5
- Service diagnosis 6 4 troubleshooting 9 5
- Part 7 trial operation and field settings 0 6
- Part 8 appendix 5 6
- Piping diagrams 6 6
- Silicone grease on power transistor diode bridge 4 6
- Tips for servicing 1 6
- Trial operation 2 3 field settings 3 6
- Wiring diagrams 9 6
- Caution items 7
- Pictograms 7
- Safety cautions 7
- Warning 7
- Warnings and cautions regarding safety of workers 7
- Caution 8
- Warning 8
- Caution 9
- Warning 9
- Warnings and cautions regarding safety of users 9
- Caution 10
- Warning 10
- Caution 11
- Icons used 11
- The following icons are used to attract the attention of the reader to specific information 11
- Functions 12
- Part 1 list of functions 12
- Functions 13
- List of functions 2 13
- Note available not available 13
- Sibe041525f functions 13
- Functions sibe041525f 14
- List of functions 14
- Note available not available 14
- Part 2 specifications 15
- Specifications 15
- See corresponding databook 16
- Specifications 16
- Indoor unit 17
- Outdoor unit 2 17
- Part 3 printed circuit board connector wiring diagram 17
- 20 25 35 class 18
- Control pcb pcb1 18
- Indoor unit 18
- Display pcb pcb2 19
- Remote control pcb br069 19
- 50 60 71 class 20
- Control pcb pcb2 20
- Display pcb pcb3 21
- Filter pcb pcb1 21
- Indoor unit sibe041525f 22
- Printed circuit board connector wiring diagram 22
- Remote control pcb br069 22
- 20 25 35 class 23
- Main pcb pcb1 23
- Outdoor unit 23
- 50 60 71 class 24
- Main pcb 24
- Main functions 5 25
- Part 4 functions and control 25
- Thermistor functions 5 3 control specification 6 25
- Control parameters 26
- Definitions of temperatures 26
- Frequency principle 26
- Inverter principle 26
- Main functions 26
- Temperature control 26
- Forced cooling operation 27
- Frequency limits 27
- Inverter features 27
- Refer to page 91 for details 27
- The following drawing shows a schematic view of the inverter principle 27
- The following functions regulate the minimum and maximum frequency 27
- The inverter provides the following features the regulating capacity can be changed according to the changes in the outdoor temperature and cooling heating load 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 even during extreme cold weather high capacity is achieved it is maintained even when the outdoor temperature is 2 c comfortable air conditioning a fine adjustment is integrated to keep the room temperature constant energy saving heating and cooling once the set temperature is reached the energy saving operation enables to maintain the room temperature at low power 27
- Airflow direction control 28
- Auto swing 28
- Comfort airflow operation 28
- Cooling dry during cooling or dry operation the flap retracts into the indoor unit then cool air can be blown far and distributed all over the room 28
- Heating during heating operation the large flap directs airflow downward to spread the warm air to the entire room 28
- Power airflow flap 28
- The flap is controlled not to blow the air directly at the people in the room 28
- The following table explains the auto swing process for cooling dry heating and fan 28
- The large flap sends a large volume of air downward to the floor and provides an optimum control in cooling dry and heating operation 28
- The louvers made of elastic synthetic resin provide a wide range of airflow that guarantees comfortable air distribution 28
- Wide angle louvers 28
- Automatic fan speed control 29
- Comfort airflow operation 29
- Fan speed control for indoor unit 29
- Outline 29
- Detail 30
- Outline 30
- Program dry operation 30
- 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 30
- Room temperature room temperature 30
- Target temperature x 30
- 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 30
- Thermostat turns on also when the room temperature is in the zone b for 10 minutes 30
- Y x 2 c or y x 2 c 30
- Z x 0 c x 1 c 30
- Zone a thermostat off 30
- Zone b 30
- Zone c thermostat on 30
- Automatic operation 31
- Detail 31
- Outline 31
- Cooling dry 32
- Detail 32
- Functions and control 32
- Heating 32
- Main functions sibe041525f 32
- Outline 32
- Refer to temperature control on page 15 for details 32
- The monitoring time has passed while the temperature difference is in the zone b cooling 10 minutes dry 7 minutes heating 10 seconds 32
- The operation turns on in any zones except a 32
- The system resumes from defrost control in any zones except a 32
- Thermostat control 32
- Thermostat control is based on the difference between the room thermistor temperature and the target temperature 32
- Thermostat off condition the temperature difference is in the zone a 32
- Thermostat on conditions the temperature difference returns to the zone c after being in the zone a 32
- Detail 33
- Econo operation 33
- Night set mode 33
- Outline 33
- 20 25 35 class 80 rpm 50 60 71 class 50 rpm 34
- Detail 34
- Ex powerful operation in cooling 34
- In order to exploit the cooling and heating capacity to full extent the air conditioner can be operated by increasing the indoor fan rotating speed and the compressor frequency 34
- Inverter powerful operation 34
- Note powerful operation cannot be used together with econo or comfort airflow operation 34
- Outline 34
- When the powerful button is pressed the fan speed and target temperature are converted to the following states for 20 minutes 34
- Auto restart function 35
- Hot start function 35
- Indoor unit on off button 35
- Other functions 35
- Signal receiving sign 35
- 1 outdoor heat exchanger thermistor 36
- 2 discharge pipe thermistor 36
- 3 indoor heat exchanger thermistor 36
- Thermistor functions 36
- Control specification 37
- Detail 37
- Mode hierarchy 37
- Note unless specified otherwise a dry operation command is regarded as cooling operation 37
- Outline 37
- The air conditioner control has normal operation mode forced operation mode and power transistor test mode for installation and servicing 37
- Detail 38
- Frequency control 38
- Outline 38
- D signal indoor frequency command the difference between the room thermistor temperature and the target temperature is taken as the d value and is used for d signal of frequency command 39
- Frequency control when other controls are functioning when frequency is dropping frequency control is carried out only when the frequency drops for controlling lower limit frequency control is carried out only when the frequency rises 39
- 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 39
- Initial frequency 39
- Off thermostat off 39
- P control the d value is calculated in each sampling time 20 seconds and the frequency is adjusted according to its difference from the frequency previously calculated 39
- Pi control 39
- 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 39
- When starting the compressor the frequency is initialized according to the d value of the indoor unit 39
- Controls at mode changing start up 40
- Detail 40
- Four way valve switching 40
- Outline 40
- Preheating control 40
- 3 minute standby 41
- At the beginning of operation as the four way valve is switched the pressure difference to activate the four way valve is acquired when the output frequency is higher than a certain fixed frequency for a certain fixed time 41
- C in heating the frequency decreases depending on the outdoor temperature 41
- Compressor protection function 41
- Detail 41
- Four way valve operation compensation 41
- Outline 41
- 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 when the outdoor temperature is above c 41
- Turning on the compressor is prohibited for 3 minutes after turning it off the function is not activated when defrosting 41
- When turning the compressor from off to on the upper limit of frequency is set as follows the function is not activated when defrosting 41
- Detail 42
- Discharge pipe temperature control 42
- Outline 42
- 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 42
- Detail 43
- Frequency control in each zone stop zone after the input current remains in the stop zone for 2 seconds the compressor is stopped dropping zone the upper limit of the compressor frequency is defined as operation frequency 2 hz after this the output frequency is lowered by 2 hz every second until it reaches the keep zone keep zone the present maximum frequency goes on reset zone limit of the frequency is canceled 43
- Input current control 43
- Limitation of current dropping and stop value according to the outdoor temperature the current drops when outdoor temperature becomes higher than a certain level depending on the model 43
- Outline 43
- The microcomputer calculates the input current while the compressor is running and sets the frequency upper limit based on the input current in case of heat pump models this control is the upper limit control of frequency and takes priority over the lower limit control of four way valve operation compensation 43
- During cooling operation the signal sent from the indoor unit determines the frequency upper limit and prevents freezing of the indoor heat exchanger the signal from the indoor unit is divided into zones the operating frequency limitation is judged with the indoor heat exchanger temperature 44
- During heating operation the indoor heat exchanger temperature determines the frequency upper limit to prevent abnormal high pressure the operating frequency limitation is judged with the indoor heat exchanger temperature 44
- Freeze up protection control 44
- Heating peak cut control 44
- Detail 45
- Liquid compression protection function 45
- Outdoor fan control 45
- Outline 45
- Conditions for canceling defrost the judgment is made with the outdoor heat exchanger temperature b c 46
- Conditions for starting defrost the starting conditions are determined with the outdoor temperature and the outdoor heat exchanger temperature the system is in heating operation the compressor operates for 6 minutes more than a minutes of accumulated time have passed since the start of the operation or ending the previous defrosting 46
- Defrost control 46
- 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 defrosting 46
- Detail 46
- Outline 46
- Detail 47
- Electronic expansion valve control 47
- Functions and control 36 47
- Outline 47
- Sibe041525f control specification 47
- 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 47
- The followings are the examples of electronic expansion valve control which function in each operation mode 47
- Control when the frequency changes 48
- Fully closing with power on 48
- High discharge pipe temperature control 48
- Opening limit control 48
- Pressure equalizing control 48
- Starting operation control 48
- Detail 49
- Discharge pipe thermistor disconnection control 49
- Outline 49
- Target discharge pipe temperature control 49
- Detail 50
- Detection of overcurrent and overload 50
- Malfunctions 50
- Outline 50
- Sensor malfunction detection 50
- Part 5 remote controller 51
- Remote controller 1 51
- Arc480a11 52
- Button 52
- Direct operation buttons 52
- Display lcd 52
- Off button 52
- Reference 52
- Remote controller 52
- Signal transmitter 52
- Button 53
- Comfor 53
- Fan setting button 53
- Note refer to the operation manual of applicable model for details you can download operation manuals from daikin business portal daikin business portal document search item category installation operation manual url https global1d daikin com business_portal login 53
- Off timer button 53
- On timer button 53
- Powerfu 53
- Refer to the following pages for details 53
- Reference 53
- Temperature adjustment button 53
- Timer cancel button 53
- Check 9 54
- General problem symptoms and check items 4 2 troubleshooting with led 5 54
- Part 6 service diagnosis 54
- Service diagnosis 6 4 troubleshooting 9 54
- General problem symptoms and check items 55
- Indoor unit 56
- Operation lamp 56
- Outdoor unit 56
- Troubleshooting with led 56
- Method 1 57
- Note 1 a short beep and 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 method 2 refer to page 47 57
- Press the timer cancel button repeatedly until a long beep sounds the code indication changes in the sequence shown below 57
- Service diagnosis 57
- When the timer cancel button is held down for 5 seconds 00 is displayed on the temperature display screen 57
- Method 2 58
- Displayed only when system down occurs 60
- Error codes and descriptions 60
- Troubleshooting 60
- Error code 61
- Error decision conditions 61
- Indoor unit pcb abnormality 61
- Method of error detection 61
- Model type connector 20 25 35 class terminal board control pcb h1 h2 h3 50 60 71 class terminal board filter pcb s100 61
- Note check the following connector 61
- Service diagnosis 50 61
- Sibe041525f troubleshooting 61
- Supposed causes 61
- The system cannot set the internal settings 61
- The system checks if the circuit works properly within the microcomputer of the indoor unit 61
- Troubleshooting 61
- Wrong models interconnected defective indoor unit pcb disconnection of connector reduction of power supply voltage 61
- Check no 1 refer to p 9 62
- Error code 62
- Error decision conditions 62
- 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 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 62
- Freeze up protection control during cooling operation the indoor heat exchanger temperature is below 0 c heating peak cut control during heating operation the indoor heat exchanger temperature is above about 60 c 62
- Freeze up protection control heating peak cut control 62
- Method of error detection 62
- Service diagnosis 62
- Short circuited air clogged air filter of the indoor unit dust accumulation on the indoor heat exchanger defective indoor heat exchanger thermistor defective indoor unit pcb 62
- Supposed causes 62
- Troubleshooting 62
- Troubleshooting sibe041525f 62
- Error code 63
- Error decision conditions 63
- Fan motor dc motor or related abnormality 63
- Method of error detection 63
- Supposed causes 63
- Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged 64
- Caution 64
- Check no 3 refer to p 0 64
- Service diagnosis 64
- Troubleshooting 64
- Troubleshooting sibe041525f 64
- C4 indoor heat exchanger thermistor c9 room temperature thermistor 65
- Check no 1 refer to p 9 65
- Disconnection of connector thermistor corresponding to the error code is defective defective indoor unit pcb 65
- Error code 65
- Error decision conditions 65
- Method of error detection 65
- Service diagnosis 54 65
- Sibe041525f troubleshooting 65
- Supposed causes 65
- The temperatures detected by the thermistors determine thermistor errors 65
- The voltage between the both ends of the thermistor is 4 6 v and more or 0 4 v and less during compressor operation 65
- Thermistor or related abnormality indoor unit 65
- Troubleshooting 65
- Error code 66
- Error decision conditions 66
- Low voltage detection or over voltage detection 66
- Method of error detection 66
- Supposed causes 66
- Caution be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged 67
- Service diagnosis 56 67
- Sibe041525f troubleshooting 67
- Troubleshooting 67
- Error code 68
- Error decision conditions 68
- Method of error detection 68
- Signal transmission error between indoor unit and outdoor unit 68
- Supposed causes 68
- Caution 69
- Check no 1 refer to p 1 69
- Service diagnosis 58 69
- Sibe041525f troubleshooting 69
- Troubleshooting 69
- Error code 70
- Error decision conditions 70
- Method of error detection 70
- Service diagnosis 70
- Supposed causes 70
- The pair type and multi type are interconnected 70
- The supply power is detected for its requirements pair type is different from multi type by the indoor outdoor transmission signal 70
- Troubleshooting 70
- Troubleshooting sibe041525f 70
- Unspecified voltage between indoor unit and outdoor unit 70
- Wrong models interconnected wrong wiring of connecting wires wrong indoor unit pcb or outdoor unit pcb mounted defective indoor unit pcb defective outdoor unit pcb 70
- Defective outdoor unit pcb noise momentary drop of voltage momentary power failure 71
- Error code 71
- Error decision conditions 71
- Method of error detection 71
- Outdoor unit pcb abnormality 71
- Service diagnosis 60 71
- Sibe041525f troubleshooting 71
- Supposed causes 71
- The microprocessor program runs out of control the zero cross signal is not detected 71
- The system checks if the microprocessor is working in order the system checks if the zero cross signal comes in properly 71
- Troubleshooting 71
- Error code 72
- Error decision conditions 72
- Method of error detection 72
- Ol activation compressor overload 72
- Supposed causes 72
- Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged 73
- Caution 73
- Check no 1 refer to p 9 73
- Check no 2 refer to p 1 73
- Check no 3 refer to p 2 73
- Check no 4 refer to p 2 73
- Note ol q1l activating temperature 120 130 c ol q1l recovery temperature 95 c 73
- Service diagnosis 62 73
- Sibe041525f troubleshooting 73
- Troubleshooting 73
- A compressor lock is detected by the current waveform generated when applying high frequency voltage to the motor 74
- Check no 2 refer to p 1 74
- Check no 5 refer to p 3 74
- Closed stop valve compressor locked disconnection of compressor harness 74
- Compressor lock 74
- Error code 74
- Error decision conditions 74
- If the error repeats the system is shut down reset condition continuous run for about 11 minutes without any other error 74
- Method of error detection 74
- Service diagnosis 74
- Supposed causes 74
- Troubleshooting 74
- Troubleshooting sibe041525f 74
- An error is determined with the high voltage fan motor rotation speed detected by the hall ic 75
- Check no 6 refer to p 5 75
- Dc fan lock 75
- Disconnection of the fan motor foreign matter stuck in the fan defective fan motor defective outdoor unit pcb 75
- Error code 75
- Error decision conditions 75
- Method of error detection 75
- Service diagnosis 64 75
- Sibe041525f troubleshooting 75
- Supposed causes 75
- The fan does not start in 15 30 seconds depending on the model even when the fan motor is running if the error repeats the system is shut down reset condition continuous run for about 11 minutes without any other error 75
- Troubleshooting 75
- An input overcurrent is detected by checking the input current value with the compressor running 76
- Check no 5 refer to p 3 76
- Check no 7 refer to p 6 76
- Check no 8 refer to p 6 76
- Error code 76
- Error decision conditions 76
- Input overcurrent detection 76
- Method of error detection 76
- Outdoor temperature is out of operation range defective compressor defective power module defective outdoor unit pcb short circuit 76
- Service diagnosis 76
- Supposed causes 76
- The current exceeds about 14 18 a depending on the model and operation mode for 2 seconds with the compressor running the upper limit of the current decreases when the outdoor temperature exceeds a certain level 76
- Troubleshooting 76
- Troubleshooting sibe041525f 76
- Error code 77
- Error decision conditions 77
- Four way valve abnormality 77
- Method of error detection 77
- Supposed causes 77
- Caution be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged 78
- Check no 1 refer to p 9 78
- Check no 3 refer to p 2 78
- Check no 4 refer to p 2 78
- Service diagnosis 78
- Troubleshooting 78
- Troubleshooting sibe041525f 78
- 25 35 class 110 88 50 60 71 class 110 95 79
- A c b c 79
- An error is determined with the temperature detected by the discharge pipe thermistor 79
- Check no 1 refer to p 9 79
- Check no 2 refer to p 1 79
- Check no 4 refer to p 2 79
- Defective discharge pipe thermistor defective outdoor heat exchanger thermistor or outdoor temperature thermistor defective electronic expansion valve or coil refrigerant shortage defective four way valve water mixed in refrigerant defective stop valve defective outdoor unit pcb 79
- Discharge pipe temperature control 79
- Error code 79
- Error decision conditions 79
- If the error repeats the system is shut down reset condition continuous run for about 60 minutes without any other error 79
- If the temperature detected by the discharge pipe thermistor rises above a c the compressor stops the error is cleared when the discharge pipe temperature has dropped below b c 79
- Method of error detection 79
- Service diagnosis 68 79
- Sibe041525f troubleshooting 79
- Supposed causes 79
- Troubleshooting 79
- Check no 1 refer to p 9 80
- Check no 2 refer to p 1 80
- Check no 7 refer to p 6 80
- Check no 8 refer to p 6 80
- Check no 9 refer to p 7 80
- Error code 80
- Error decision conditions 80
- High pressure control in cooling 80
- 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 80
- Method of error detection 80
- Service diagnosis 80
- Supposed causes 80
- The installation space is not large enough dirty outdoor heat exchanger defective outdoor fan motor defective stop valve defective electronic expansion valve or coil defective outdoor heat exchanger thermistor defective outdoor unit pcb 80
- The temperature sensed by the outdoor heat exchanger thermistor rise above 61 c depending on the model the error is cleared when the temperature drops below 51 52 c depending on the model 80
- Troubleshooting 80
- Troubleshooting sibe041525f 80
- Broken or disconnected harness defective outdoor unit pcb 81
- Compressor system sensor abnormality 81
- Error code 81
- Error decision conditions 81
- Method of error detection 81
- Service diagnosis 70 81
- Sibe041525f troubleshooting 81
- Supposed causes 81
- The system checks the dc current before the compressor starts 81
- The voltage converted from the dc current before compressor start up is out of the range 0 4 v the dc voltage before compressor start up is below 50 v 81
- Troubleshooting 81
- Error code 82
- Error decision conditions 82
- Method of error detection 82
- Position sensor abnormality 82
- Supposed causes 82
- Caution be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged 83
- Check no 0 refer to p 7 83
- Check no 5 refer to p 3 83
- Check no 8 refer to p 6 83
- Service diagnosis 72 83
- Sibe041525f troubleshooting 83
- Troubleshooting 83
- Error code 84
- Error decision conditions 84
- H9 j3 j6 p4 84
- Method of error detection 84
- Supposed causes 84
- Thermistor or related abnormality outdoor unit 84
- Troubleshooting 84
- Caution 85
- Check no 1 refer to p 9 85
- H9 outdoor temperature thermistor j3 discharge pipe thermistor j6 outdoor heat exchanger thermistor 85
- In case of h9 j3 j6 85
- Service diagnosis 74 85
- Sibe041525f troubleshooting 85
- Troubleshooting 85
- A c b c c c 20 25 35 class 93 70 78 50 60 71 class 90 64 81 86
- An electrical box temperature rise is detected by checking the radiation fin thermistor with the compressor off 86
- Check no 7 refer to p 6 86
- Check no 9 refer to p 7 86
- Defective outdoor fan motor short circuit defective radiation fin thermistor disconnection of connector defective outdoor unit pcb 86
- Electrical box temperature rise 86
- Error code 86
- Error decision conditions 86
- Method of error detection 86
- Service diagnosis 86
- Supposed causes 86
- Troubleshooting 86
- Troubleshooting sibe041525f 86
- With the compressor off the radiation fin temperature is above a c the error is cleared when the radiation fin temperature drops below b c to cool the electrical components the outdoor fan starts when the radiation fin temperature rises above c c and stops when the radiation fin temperature drops below b c 86
- A c b c 20 25 35 class 93 78 50 60 71 class 100 57 87
- A radiation fin temperature rise is detected by checking the radiation fin thermistor with the compressor on 87
- Check no 7 refer to p 6 87
- Check no 9 refer to p 7 87
- Defective outdoor fan motor short circuit defective radiation fin thermistor disconnection of connector defective outdoor unit pcb silicone grease is not applied properly on the radiation fin after replacing the outdoor unit pcb 87
- Error code 87
- Error decision conditions 87
- If the radiation fin temperature with the compressor on is above a c the error is cleared when the radiation fin temperature drops below b c if the error repeats the system is shut down reset condition continuous run for about 60 minutes without any other error 87
- Method of error detection 87
- Note refer to silicone grease on power transistor diode bridge on page 94 for details 87
- Radiation fin temperature rise 87
- Service diagnosis 76 87
- Sibe041525f troubleshooting 87
- Supposed causes 87
- Troubleshooting 87
- Error code 88
- Error decision conditions 88
- Method of error detection 88
- Output overcurrent detection 88
- Supposed causes 88
- Caution 89
- Check no 2 refer to p 8 89
- Check no 5 refer to p 3 89
- Check no 7 refer to p 6 89
- Check no 8 refer to p 6 89
- Service diagnosis 78 89
- Sibe041525f troubleshooting 89
- Troubleshooting 89
- Check no 1 90
- Disconnect the connectors of the thermistors from the pcb and measure the resistance of each thermistor using a multimeter 90
- Thermistor resistance check 90
- When the connector of indoor heat exchanger thermistor is soldered on a pcb remove the thermistor and measure the resistance 90
- When the room temperature thermistor is soldered on a pcb remove the pcb from the control pcb to measure the resistance 90
- Check no 3 91
- Fan motor wire breakdown short circuit check 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 ω 100 ω between the pins 12 9 and between 9 6 91
- Indoor fan motor connector output check 91
- Motor control voltage check 1 check the connector for connection 2 check the motor control voltage is generated between the pins 2 3 91
- Rotation pulse check 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 3 91
- Service diagnosis 80 91
- Sibe041525f check 91
- Check no 1 92
- Check no 2 92
- Check sibe041525f 92
- Conduct the followings to check the electronic expansion valve ev 1 check if the ev connector is correctly connected to the pcb 2 turn the power off and on again and check 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 multimeter 4 check the continuity between the pins 1 6 2 6 3 6 and 4 6 between the pins 1 5 2 5 3 5 4 5 for the 5p connector models if there is no continuity between the pins the ev coil is faulty 5 if the continuity is confirmed in step 3 the outdoor unit pcb main pcb is faulty 92
- Electronic expansion valve check 92
- Fig fig 92
- Measure the power supply waveform between no 1 and no 2 on the terminal board and check the waveform disturbance check if the power supply waveform is a sine wave fig check if there is waveform disturbance near the zero cross sections circled in fig 92
- Power supply waveforms check 92
- Service diagnosis 92
- Check no 3 93
- Check no 4 93
- Four way valve performance check 93
- Inverter unit refrigerant system check 93
- Service diagnosis 82 93
- Sibe041525f check 93
- Check no 5 94
- Inverter analyzer check 94
- Check no 6 96
- Rotation pulse check on the outdoor unit pcb 96
- Check no 7 97
- Check no 8 97
- Discharge pressure check 97
- Installation condition check 97
- Service diagnosis 86 97
- Sibe041525f check 97
- Main circuit short check 98
- Outdoor fan system check 98
- Check no 2 99
- Power module check 99
- 25 35 class 100
- 60 71 class 100
- Check sibe041525f 100
- Service diagnosis 100
- Part 7 trial operation and field settings 101
- Silicone grease on power transistor diode bridge 4 101
- Tips for servicing 1 101
- Trial operation 2 3 field settings 3 101
- Detail 102
- Forced cooling operation 102
- In order to protect the environment be sure to conduct pump down operation when relocating or disposing of the unit 102
- Indoor unit 102
- Outline 102
- Pump down operation 102
- Refer to page 91 for forced cooling operation 102
- Remove the valve caps from the liquid stop valve and the gas stop valve 2 carry out forced cooling operation 3 after 5 10 minutes close the liquid stop valve with a hexagonal wrench 4 after 2 3 minutes close the gas stop valve and stop the forced cooling operation 102
- Tips for servicing 102
- Detail 103
- Outline 103
- Trial operation 103
- 4 6 2 3 104
- Address 104
- Field settings 104
- Temperature display switch 104
- When 2 units are installed in 1 room 104
- Detail 105
- Outline 105
- Silicone grease on power transistor diode bridge 105
- Part 8 appendix 106
- Piping diagrams 6 106
- Wiring diagrams 9 106
- Appendix 96 107
- Ftx20 25 35k 2 v1b atx20 25 35k 2 v1b 107
- Ftx50 60 71k m 2 v1b 107
- Indoor unit 107
- Piping diagrams 107
- Sibe041525f piping diagrams 107
- Appendix 108
- D090673b 108
- Outdoor unit 108
- Piping diagrams sibe041525f 108
- Rx20 25k2 5v1b arx20 25k2v1b 108
- Rx35k2 5v1b arx35k2v1b 108
- Appendix 98 109
- D094281 109
- D094282a 109
- Rx50k 2 v1b 109
- Rx60 71k 2 v1b 109
- Sibe041525f piping diagrams 109
- Ftx20 25 35k 2 v1b atx20 25 35k 2 v1b 110
- Indoor unit 110
- Wiring diagrams 110
- Ftx50 60 71k m 2 v1b 111
- Appendix 112
- Note pcb1 main pcb refer to part 3 for printed circuit board connector wiring diagram 112
- Outdoor unit 112
- Rx20 25 35k2 5v1b arx20 25 35k2v1b 112
- Wiring diagrams sibe041525f 112
- Appendix 102 113
- Note pcb main pcb refer to part 3 for printed circuit board connector wiring diagram 113
- Rx50 60 71k 2 v1b 113
- Sibe041525f wiring diagrams 113
- Cautions on product corrosion 114
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