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Daikin FTXS20K2V1B [10/184] Used icons
![Daikin FTXS20K2V1B [10/184] Used icons](/views2/1720351/page10/bga.png)
Introduction SiBE041134
ix
1.2 Used Icons
Icons are used to attract the attention of the reader to specific information. The meaning of each
icon is described in the table below:
Be sure to measure the insulation resistance after the repair, and make sure
that the resistance is 1 MΩ or higher.
Faulty insulation may cause an electrical shock.
Be sure to check the drainage of the indoor unit after the repair.
Faulty drainage may cause the water to enter the room and wet the furniture
and floor.
Do not tilt the unit when removing it.
The water inside the unit may spill and wet the furniture and floor.
Be sure to install the packing and seal on the installation frame properly.
If the packing and seal are not installed properly, water may enter the room and
wet the furniture and floor.
For unitary type
only
Caution
Icon Type of
Information
Description
Note:
Note A “note” provides information that is not indispensable, but may
nevertheless be valuable to the reader, such as tips and tricks.
Caution
Caution A “caution” is used when there is danger that the reader, through
incorrect manipulation, may damage equipment, loose data, get
an unexpected result or has to restart (part of) a procedure.
Warning
Warning A “warning” is used when there is danger of personal injury.
Reference A “reference” guides the reader to other places in this binder or
in this manual, where he/she will find additional information on a
specific topic.
Содержание
- Inverter pair 1
- Manual 1
- Service 1
- Sibe041134 1
- Wall mounted type k series 1
- Inverter pair wall mounted type k series 2
- Table of contents 2
- Function of thermistor 3 3 control specification 4 3
- Functions 3
- Indoor unit 2 outdoor unit 3
- Introduction v 3
- Main functions 1 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 0 3
- Part 5 operation manual 7 3
- Specifications 3
- System configuration 8 2 operation manual 9 3
- Check 01 4
- Part 6 service diagnosis 9 4
- Problem symptoms and measures 1 3 service check function 2 4 troubleshooting 5 4
- Troubleshooting with led 0 4
- Application of silicon grease to a power transistor and a diode bridge 70 5
- Indoor unit 11 5
- Outdoor unit 34 5
- Part 7 removal procedure 10 5
- Part 8 trial operation and field settings 63 5
- Part 9 appendix 71 5
- Piping diagrams 72 5
- Pump down operation 64 2 forced cooling operation 65 3 trial operation 66 4 field settings 67 5
- Wiring diagrams 73 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 sibe041134 12
- List of functions 12
- Note holding functions no functions 12
- Part 2 specifications 13
- Specifications 13
- Hz 220 230 240 v 14
- Specifications 14
- Specifications sibe041134 14
- Indoor unit 2 outdoor unit 15
- Part 3 printed circuit board connector wiring diagram 15
- Connectors and other parts 16
- Indoor unit 16
- Pcb 1 control pcb 17
- Pcb 2 display pcb 17
- Pcb 3 intelligent eye sensor pcb 17
- Pcb detail 17
- Printed circuit board connector wiring diagram 7 17
- Sibe041134 indoor unit 17
- Connectors and other parts 18
- Outdoor unit 18
- Pcb 1 filter pcb 19
- Pcb 2 main pcb 19
- Pcb 3 forced operation button pcb 19
- Pcb detail 19
- Printed circuit board connector wiring diagram 9 19
- Sibe041134 outdoor unit 19
- Function of thermistor 3 3 control specification 4 20
- Main functions 1 20
- Part 4 function and control 20
- Additional control parameters 21
- Definitions of temperatures 21
- Frequency principle 21
- Inverter principle 21
- Main control parameters 21
- Main functions 21
- Temperature control 21
- Drawing of inverter 22
- Forced cooling operation 22
- Frequency limits 22
- Inverter features 22
- Refer to page 165 for detail 22
- The following drawing shows a schematic view of the inverter principle 22
- The following functions regulate the minimum and maximum frequency 22
- 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 compressor rotational speed 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 22
- Airflow direction control 23
- Auto swing 23
- Comfort airflow operation 23
- Power airflow dual flap 23
- Wide angle louvers 23
- Automatic fan speed control 24
- Comfort airflow operation 24
- Fan speed control for indoor unit 24
- Outline 24
- Detail 25
- Outline 25
- Program dry operation 25
- 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 25
- 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 25
- Y 0 ºc 25
- Zone a thermostat off 25
- Zone b zone b 25
- Zone c thermostat on 25
- Automatic operation 26
- Detail 26
- Outline 26
- Function and control 17 27
- Refer to temperature control on page 11 for detail 27
- Sibe041134 main functions 27
- The monitoring time has passed while the temperature difference is in the zone b cooling dry 10 minutes heating 10 seconds 27
- The operation turns on in any zones except a 27
- The system resumes from defrost control in any zones except a 27
- Thermostat control 27
- Thermostat control is based on the difference between the room thermistor temperature and the target temperature 27
- Thermostat off condition the temperature difference is in the zone a 27
- Thermostat on condition the temperature difference returns to the zone c after being in the zone a 27
- Detail 28
- Function and control 28
- Main functions sibe041134 28
- Night set mode 28
- Outline 28
- 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 28
- When the off timer is set the night set mode is automatically activated the night set mode keeps the airflow rate setting 28
- Econo operation 29
- Outline 29
- Detail 30
- Detection method by intelligent eye 30
- For dry operation you cannot set the temperature with a remote controller but the target temperature is shifted internally 30
- Function and control 30
- Intelligent eye operation 30
- Main functions sibe041134 30
- Others 30
- Outline 30
- The motions for example in cooling 30
- The sensor detects human motion by receiving infrared rays and displays the pulse wave output 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 30
- 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 30
- 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 1 2 c higher heating 2 c lower auto according to the operation mode at that time in fan operation the fan speed is reduced by 60 rpm 30
- 80 rpm 31
- Detail 31
- Ex powerful operation in cooling 31
- 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 31
- Inverter powerful operation 31
- Outline 31
- When the powerful button is pressed the fan speed and target temperature are converted to the following states for 20 minutes 31
- Auto restart function 32
- Hot start function 32
- Indoor unit on off button 32
- Other functions 32
- Signal receiving sign 32
- Titanium apatite photocatalytic air purifying filter 32
- Weekly timer operation 32
- 1 outdoor heat exchanger thermistor 33
- 2 discharge pipe thermistor 33
- 3 indoor heat exchanger thermistor 33
- Function of thermistor 33
- Control specification 34
- Detail 34
- Mode hierarchy 34
- Note unless specified otherwise an indoor dry operation command is regarded as cooling operation 34
- Outline 34
- There are 3 modes normal operation mode forced operation mode and the power transistor test mode for installation and servicing 34
- Detail 35
- Frequency control 35
- Outline 35
- Frequency management when other controls are functioning when frequency is dropping frequency management is carried out only when the frequency drops for limiting lower limit frequency management is carried out only when the frequency rises 36
- 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 36
- 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 36
- 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 36
- Th off thermostat off 36
- 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 36
- 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 36
- 3 minute standby 37
- Controls at mode changing start up 37
- Detail 37
- Four way valve operation compensation 37
- Four way valve switching 37
- Outline 37
- Preheating operation 37
- Compressor protection function 38
- Detail 38
- Discharge pipe temperature control 38
- Outline 38
- 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 38
- When turning the compressor from off to on the upper limit of frequency is set as follows the function is not activated when defrosting 38
- Detail 39
- Input current control 39
- Outline 39
- Detail 40
- 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 40
- During heating operation the indoor heat exchanger temperature determines the frequency upper limit to prevent abnormal high pressure 40
- Freeze up protection control 40
- Heating peak cut control 40
- Outline 40
- The operating frequency limitation is judged with the indoor heat exchanger temperature 40
- Detail 41
- Liquid compression protection function 41
- Outdoor fan control 41
- Outline 41
- Conditions for canceling defrost the judgment is made with the outdoor heat exchanger temperature b c 42
- 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 pass after the start of the operation or ending the previous defrosting 42
- Defrost control 42
- 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 42
- Detail 42
- Outline 42
- Detail 43
- Electronic expansion valve control 43
- Function and control 33 43
- Outline 43
- Sibe041134 control specification 43
- 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 1 target discharge pipe temperature control 43
- The followings are the examples of electronic expansion valve control which function in each operation mode 43
- Control when the frequency changes 44
- Detail 44
- Fully closing with power on 44
- High discharge pipe temperature control 44
- Opening limit control 44
- Outline 44
- Pressure equalizing control 44
- Starting operation control 44
- Control for disconnection of the discharge pipe thermistor 45
- Detail 45
- Outline 45
- Target discharge pipe temperature control 45
- Detail 46
- Detection of overcurrent and overload 46
- Malfunctions 46
- Outline 46
- Refrigerant shortage control 46
- Sensor malfunction detection 46
- Part 5 operation manual 47
- System configuration 8 2 operation manual 9 47
- System configuration 48
- Name of parts 49
- Operation manual 49
- Remote controller 49
- Clock button 50
- Comfort button 50
- Econo button 50
- Intelligent eye button 50
- Mode selector button 50
- Off timer button 50
- On timer button 50
- Open the front cover 50
- Operation manual 50
- Operation manual sibe041134 50
- Quiet button 50
- Select button 50
- Swing button 50
- Timer cancel button 50
- Auto dry cool heat fan operation 51
- Press again 51
- Press and select an operation mode 51
- Operating conditions 52
- Operation manual 52
- Operation manual sibe041134 52
- To change the temperature setting 52
- Adjusting the airflow direction and rate 53
- Press when the flap has reached the desired position 53
- To adjust the louvers at desired position 53
- To set the flap at desired position 53
- To start auto swing 53
- Caution 54
- Operation manual 54
- Operation manual sibe041134 54
- To adjust the airflow rate setting 54
- Comfort airflow operation 55
- Press again 55
- To cancel comfort airflow operation 55
- To start comfort airflow operation 55
- Intelligent eye operation 56
- Press again 56
- Caution 57
- Energy saving operation 57
- Example 57
- Intelligent eye operation 57
- Intelligent eye operation is useful for energy saving 57
- Notes on intelligent eye operation 57
- Disappears from the lcd 58
- In auto operation 58
- In cool and heat operation 58
- In dry operation 58
- In fan operation 58
- Notes on powerful operation 58
- Powerful operation 58
- Powerful operation ends in 20 minutes then the system automatically operates again with the previous settings which were used before powerful operation is displayed on the lcd 58
- Press again 58
- Press during operation 58
- To cancel powerful operation 58
- To start powerful operation 58
- Disappears from the lcd 59
- Is displayed on the lcd 59
- Notes on outdoor unit quiet operation 59
- Outdoor unit quiet operation 59
- Press again 59
- The noise level of the outdoor unit will be lower this function is useful when you need to consider the noise for your neighbourhood 59
- To cancel outdoor unit quiet operation 59
- To start outdoor unit quiet operation 59
- Econo operation 60
- In case the air conditioner and other appliances which require high power consumption are used at same time a circuit breaker may trip if the air conditioner operate with its maximum capacity 60
- Normal operation econo operation 60
- Press again 60
- Press during operation 60
- The circuit breaker will hardly trip even if the air conditioner and other appliances are used at same time 60
- The maximum power consumption of the air conditioner is limited by using econo operation 60
- This diagram is a representation for illustrative purposes only the maximum running current and power consumption of the air conditioner in econo operation vary with the connecting outdoor unit 60
- To cancel econo operation 60
- To start econo operation 60
- Off timer operation 61
- Point you like 61
- Press again 61
- Press until the time setting reaches the 61
- To cancel off timer operation 61
- To use off timer operation 61
- On timer operation 62
- Point you like 62
- Press again 62
- Press until the time setting reaches the 62
- Operation manual 53 63
- Sibe041134 operation manual 63
- Using in these cases of weekly timer 63
- Weekly timer operation 63
- And reservation number 64
- Press to select the desired day of the week 64
- Press to select the desired mode 64
- Setting mode 64
- To use weekly timer operation 64
- Press to complete the setting 65
- Press to select the desired temperature 65
- Press to select the desired time 65
- Weekly timer operation 65
- Copied 66
- Copy mode 66
- Press to complete the setting 66
- Press to confirm the day of the week to be 66
- Press to select the destination day of the 66
- Caution 67
- Confirming a reservation 67
- Press to exit confirming mode 67
- Press to select the day of the week and the 67
- Press while is displayed on the lcd 67
- Reservation number to be confirmed 67
- To deactivate weekly timer operation 67
- Weekly timer operation 67
- Check 01 69
- Part 6 service diagnosis 69
- Problem symptoms and measures 1 3 service check function 2 4 troubleshooting 5 69
- Troubleshooting with led 0 69
- Indoor unit 70
- Operation lamp 70
- Outdoor unit 70
- Service monitor 70
- Troubleshooting with led 70
- Problem symptoms and measures 71
- Check method 1 72
- 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 63 72
- Press the timer cancel button repeatedly until a long beep sounds the code indication changes in the sequence shown below 72
- Service check function 72
- When the timer cancel button is held down for 5 seconds 00 is displayed on the temperature display screen 72
- Check method 2 73
- Displayed only when system down occurs 75
- Error codes and description 75
- Troubleshooting 75
- Indoor unit pcb abnormality 76
- Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged 77
- Caution 77
- Model type connector 77
- Note check the following connector 77
- Service diagnosis 67 77
- Sibe041134 troubleshooting 77
- Troubleshooting 77
- Wall mounted type terminal board control pcb 77
- Freeze up protection control or heating peak cut control 78
- Malfunction decision conditions 78
- Method of malfunction detection 78
- Remote controller display 78
- Supposed causes 78
- Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged 79
- Caution 79
- Check no 1 refer to p 01 79
- Service diagnosis 69 79
- Sibe041134 troubleshooting 79
- Troubleshooting 79
- Fan motor dc motor or related abnormality 80
- Malfunction decision conditions 80
- Method of malfunction detection 80
- Remote controller display 80
- Supposed causes 80
- Caution be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged 81
- Check no 3 refer to p 02 81
- Service diagnosis 71 81
- Sibe041134 troubleshooting 81
- Troubleshooting 81
- Malfunction decision conditions 82
- Method of malfunction detection 82
- Remote controller display 82
- Supposed causes 82
- Thermistor or related abnormality indoor unit 82
- Troubleshooting 82
- Malfunction decision conditions 83
- Method of malfunction detection 83
- Refrigerant shortage 83
- Remote controller display 83
- Supposed causes 83
- Caution 84
- Check no 1 refer to p 01 84
- Check no 2 refer to p 03 84
- Service diagnosis 84
- Troubleshooting 84
- Troubleshooting sibe041134 84
- Low voltage detection or over voltage detection 85
- Malfunction decision conditions 85
- Method of malfunction detection 85
- Remote controller display 85
- Supposed causes 85
- Caution be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged 86
- Service diagnosis 86
- Troubleshooting 86
- Troubleshooting sibe041134 86
- Malfunction decision conditions 87
- Method of malfunction detection 87
- Remote controller display 87
- Signal transmission error between indoor unit and outdoor unit 87
- Supposed causes 87
- Caution 88
- Check no 1 refer to p 02 88
- Service diagnosis 88
- Troubleshooting 88
- Troubleshooting sibe041134 88
- Malfunction decision conditions 89
- Method of malfunction detection 89
- Remote controller display 89
- Service diagnosis 79 89
- Sibe041134 troubleshooting 89
- Supposed causes 89
- The pair type and multi type are interconnected 89
- The supply power is detected for its requirements different from pair type and multi type by the indoor outdoor transmission signal 89
- Troubleshooting 89
- Unspecified voltage between indoor unit and outdoor unit 89
- 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 89
- Defective outdoor unit pcb broken harness between pcbs noise momentary fall of voltage momentary power failure etc 90
- Malfunction decision conditions 90
- Method of malfunction detection 90
- Outdoor unit pcb abnormality 90
- Remote controller display 90
- Service diagnosis 90
- Supposed causes 90
- The microprocessor program runs out of control the zero cross signal is not detected 90
- The system checks if the microprocessor is working in order the system checks if the zero cross signal comes in properly 90
- Troubleshooting 90
- Troubleshooting sibe041134 90
- A compressor overload is detected through compressor ol 91
- Check no 1 refer to p 01 91
- Check no 2 refer to p 03 91
- Check no 3 refer to p 04 91
- Check no 4 refer to p 04 91
- Defective discharge pipe thermistor defective electronic expansion valve or coil defective four way valve or coil defective outdoor unit pcb refrigerant shortage water mixed in refrigerant defective stop valve 91
- If the error repeats the system is shut down reset condition continuous run for about 60 minutes without any other error the operating temperature condition is not specified 91
- Malfunction decision conditions 91
- Method of malfunction detection 91
- Ol activation compressor overload 91
- Remote controller display 91
- Service diagnosis 81 91
- Sibe041134 troubleshooting 91
- Supposed causes 91
- Troubleshooting 91
- A compressor lock is detected by checking the compressor running condition through the position detection circuit 92
- Check no 5 refer to p 05 92
- Compressor lock 92
- Compressor locked compressor harness disconnected 92
- Malfunction decision conditions 92
- Method of malfunction detection 92
- Operation stops due to overcurrent if the error repeats the system is shut down reset condition continuous run for about 11 minutes without any other error 92
- Remote controller display 92
- Service diagnosis 92
- Supposed causes 92
- Troubleshooting 92
- Troubleshooting sibe041134 92
- An error is determined with the high voltage fan motor rotation speed detected by the hall ic 93
- Check no 6 refer to p 06 93
- Dc fan lock 93
- Foreign matter stuck in the fan defective fan motor defective outdoor unit pcb 93
- Malfunction decision conditions 93
- Method of malfunction detection 93
- Remote controller display 93
- Service diagnosis 83 93
- Sibe041134 troubleshooting 93
- Supposed causes 93
- The fan does not start in 15 60 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 93
- Troubleshooting 93
- An input overcurrent is detected by checking the input current value with the compressor running 94
- Check no 5 refer to p 05 94
- Check no 7 refer to p 07 94
- Check no 8 refer to p 07 94
- Defective compressor defective power module defective outdoor unit pcb short circuit 94
- Input overcurrent detection 94
- Malfunction decision conditions 94
- Method of malfunction detection 94
- Remote controller display 94
- Service diagnosis 94
- Supposed causes 94
- The current exceeds about 9 5 a for 2 seconds with the compressor running the upper limit of the current decreases when the outdoor temperature exceeds a certain level 94
- Troubleshooting 94
- Troubleshooting sibe041134 94
- Four way valve abnormality 95
- Malfunction decision conditions 95
- Method of malfunction detection 95
- Remote controller display 95
- Supposed causes 95
- Caution be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged 96
- Check no 1 refer to p 01 96
- Check no 3 refer to p 04 96
- Check no 4 refer to p 04 96
- Service diagnosis 96
- Troubleshooting 96
- Troubleshooting sibe041134 96
- 1 above 45 hz rising above 40 hz dropping 110 97 97
- 2 30 45 hz rising 25 40 hz dropping 105 92 3 below 30 hz rising below 25 hz dropping 99 86 97
- A c b c 97
- An error is determined with the temperature detected by the discharge pipe thermistor 97
- Check no 1 refer to p 01 97
- Check no 2 refer to p 03 97
- Check no 4 refer to p 04 97
- 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 97
- Discharge pipe temperature control 97
- If the error repeats the system is shut down reset condition continuous run for about 60 minutes without any other error 97
- 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 97
- Malfunction decision conditions 97
- Method of malfunction detection 97
- Remote controller display 97
- Service diagnosis 87 97
- Sibe041134 troubleshooting 97
- Supposed causes 97
- Troubleshooting 97
- Check no 1 refer to p 01 98
- Check no 2 refer to p 03 98
- Check no 7 refer to p 07 98
- Check no 8 refer to p 07 98
- Check no 9 refer to p 08 98
- High pressure control in cooling 98
- 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 98
- Malfunction decision conditions 98
- Method of malfunction detection 98
- Remote controller display 98
- Service diagnosis 98
- Supposed causes 98
- 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 98
- The temperature sensed by the outdoor heat exchanger thermistor rises above about 65 c the error is cleared when the temperature drops below about 50 c 98
- Troubleshooting 98
- Troubleshooting sibe041134 98
- Broken or disconnected harness defective outdoor unit pcb 99
- Compressor system sensor abnormality 99
- Malfunction decision conditions 99
- Method of malfunction detection 99
- Remote controller display 99
- Service diagnosis 89 99
- Sibe041134 troubleshooting 99
- Supposed causes 99
- The dc current before compressor start up is out of the range 0 4 v sensor output converted to voltage value the dc voltage before compressor start up is below 50 v 99
- The system checks the dc current before the compressor starts 99
- Troubleshooting 99
- Malfunction decision conditions 100
- Method of malfunction detection 100
- Position sensor abnormality 100
- Remote controller display 100
- Supposed causes 100
- Caution be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged 101
- Check no 0 refer to p 08 101
- Check no 5 refer to p 05 101
- Check no 8 refer to p 07 101
- Service diagnosis 91 101
- Sibe041134 troubleshooting 101
- Troubleshooting 101
- Dc voltage current sensor abnormality 102
- H9 j3 j6 p4 103
- Malfunction decision conditions 103
- Method of malfunction detection 103
- Remote controller display 103
- Supposed causes 103
- Thermistor or related abnormality outdoor unit 103
- Troubleshooting 103
- Caution 104
- Check no 1 refer to p 01 104
- H9 outdoor temperature thermistor j3 discharge pipe thermistor j6 outdoor heat exchanger thermistor 104
- In case of h9 j3 j6 104
- Service diagnosis 104
- Troubleshooting 104
- Troubleshooting sibe041134 104
- Electrical box temperature rise 105
- Malfunction decision conditions 105
- Method of malfunction detection 105
- Remote controller display 105
- Supposed causes 105
- A c b c c c 106
- Caution 106
- Check no 7 refer to p 07 106
- Check no 9 refer to p 08 106
- Service diagnosis 106
- Troubleshooting 106
- Troubleshooting sibe041134 106
- Malfunction decision conditions 107
- Method of malfunction detection 107
- Radiation fin temperature rise 107
- Remote controller display 107
- Supposed causes 107
- A c 98 108
- Caution 108
- Check no 7 refer to p 07 108
- Check no 9 refer to p 08 108
- Note refer to application of silicon grease to a power transistor and a diode bridge on page 170 for detail 108
- Service diagnosis 108
- Troubleshooting 108
- Troubleshooting sibe041134 108
- Malfunction decision conditions 109
- Method of malfunction detection 109
- Output overcurrent detection 109
- Remote controller display 109
- Supposed causes 109
- Caution 110
- Check no 2 refer to p 09 110
- Check no 5 refer to p 05 110
- Check no 7 refer to p 07 110
- Check no 8 refer to p 07 110
- Service diagnosis 110
- Troubleshooting 110
- Troubleshooting sibe041134 110
- Check no 1 111
- 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 graphs below 111
- The room temperature thermistor is directly mounted on the display pcb remove the display pcb from the control pcb to measure the resistance 111
- Thermistor resistance check 111
- When the indoor heat exchanger thermistor is soldered on the pcb remove the thermistor and measure the resistance 111
- Check no 1 112
- Check no 3 112
- Fan motor connector output check 112
- Power supply waveforms check 112
- Check no 2 113
- Electronic expansion valve check 113
- Check no 3 114
- Check no 4 114
- Check sibe041134 114
- Four way valve performance check 114
- Inverter units refrigerant system check 114
- Service diagnosis 114
- Check no 5 115
- Inverter checker check 115
- Check no 6 116
- Rotation pulse check on the outdoor unit pcb 116
- Check no 7 117
- Check no 8 117
- Discharge pressure check 117
- Installation condition check 117
- Service diagnosis 107 117
- Sibe041134 check 117
- Main circuit short check 118
- Outdoor fan system check 118
- Check no 2 119
- Disconnect the compressor harness connector from the outdoor unit pcb to disengage the connector press the protrusion on the connector 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 119
- Note check to make sure that the voltage between and of the power module is approx 0 v before checking 119
- Power module check 119
- Indoor unit 11 120
- Outdoor unit 34 120
- Part 7 removal procedure 120
- Indoor unit 121
- Procedure 121
- Removal of air filters 121
- Procedure 123
- Removal of horizontal blade 123
- Remove the horizontal blade 124
- Procedure 125
- Removal of front panel 125
- Procedure 126
- Removal of front grille 126
- Procedure 127
- Removal of vertical blade assys 127
- Procedure 129
- Removal of electrical box 129
- Procedure 132
- Removal of swing motor pcbs 132
- Procedure 137
- Removal of indoor heat exchanger 137
- Disconnect the flare nut for liquid piping 138
- Remove the indoor heat exchanger 138
- Remove the indoor unit from the installation plate 138
- Unfasten the hook of the piping fixture on the back of the indoor unit 138
- Procedure 140
- Removal of fan rotor fan motor 140
- Exchange of piping direction drain hose 143
- Procedure 143
- Outdoor unit 144
- Procedure 144
- Removal of outer panels fan motor 144
- Remove the 8 screws of the front panel 146
- The front panel has 4 hooks 146
- Unfasten the hooks pull and remove the front panel 146
- Disconnect the connector for the fan motor s70 148
- Release the fan motor lead wire from the hook 148
- Remove the screw and remove the fan motor fixing frame 149
- When reassembling fit the lower hooks into the bottom frame 149
- Remove the 4 screws on the right side panel 151
- Remove the screw near the stop valves 151
- Unfasten the hook on the rear side when reassembling make sure to fit the hook 151
- Lift up the guard net and remove it 152
- Lift up the right side panel and remove it when reassembling make sure to fit the hook 152
- Procedure 153
- Removal of electrical box 153
- Lift and remove the electrical box 155
- Release the discharge pipe thermistor be careful not to lose the clip for the thermistor 155
- Procedure 156
- Removal of pcbs 156
- Cut the clamps at the 2 locations 158
- Disconnect the connector for the filter pcb s10 158
- Release the harness 158
- Cut the clamp 161
- Release the harnesses from the hook 161
- Remove the filter pcb 161
- Lift and pull out the filter pcb 162
- Release the harnesses from the hooks 162
- Remove the screw 162
- Unfasten the 2 hooks 162
- Feature of the filter pcb refer to page 9 for detail 163
- Procedure 164
- Removal of reactor partition plate 164
- Procedure 166
- Removal of sound blankets 166
- Pull the sound blanket bottom out 167
- Pull the sound blanket inner out 167
- Procedure 168
- Removal of four way valve 168
- Procedure 171
- Removal of compressor 171
- Application of silicon grease to a power transistor and a diode bridge 70 173
- Part 8 trial operation and field settings 173
- Pump down operation 64 2 forced cooling operation 65 3 trial operation 66 4 field settings 67 173
- Detail 174
- Outline 174
- Pump down operation 174
- Forced cooling operation 175
- Indoor unit 175
- Outdoor unit 175
- 2 4 5 1 6 176
- Detail 176
- Outline 176
- Trial operation 176
- Field settings 177
- Indoor unit pcb 177
- Model type setting 177
- Outline 177
- When 2 units are installed in 1 room 177
- Wireless remote controller 177
- Detail 178
- Facility setting jumper cooling at low outdoor temperature 178
- Outline 178
- Standby electricity saving 178
- For the location of the jumper refer to page 7 9 179
- Jumper settings 179
- Applicable models 180
- Application of silicon grease to a power transistor and a diode bridge 180
- Details 180
- Ng foreign object ok evenly applied silicon grease ng not evenly applied 180
- Not applied paper waste 180
- Power transistor trm tpm igbt ipm spm etc diode bridge diode bridge rectifier stack etc 180
- Take out a pcb 180
- Part 9 appendix 181
- Piping diagrams 72 181
- Wiring diagrams 73 181
- Ftxs20 25k2v1b 182
- Indoor unit 182
- Outdoor unit 182
- Piping diagrams 182
- Rxs20 25k2v1b 182
- Appendix 173 183
- Ftxs20 25k2v1b 183
- Indoor unit 183
- Outdoor unit 183
- Rxs20 25k2v1b 183
- Sibe041134 wiring diagrams 183
- Wiring diagrams 183
- Cautions on product corrosion 184
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