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Daikin FDKS50C7VMB [181/302] Indoor unit pcb abnormality
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SiBE121135_A Troubleshooting for RA Indoor Unit
Service Diagnosis 170
5. Troubleshooting for RA Indoor Unit
5.1 Indoor Unit PCB Abnormality
Error Code A1
Method of Error
Detection
The system checks if the circuit works properly within the microcomputer of the indoor unit.
Error Decision
Conditions
The system cannot set the internal settings.
Supposed
Causes
Wrong models interconnected
Defective indoor unit PCB
Disconnection of connector
Reduction of power supply voltage
Содержание
- E f g k series 1
- Manual 1
- Service 1
- Sibe121135_a 1
- Cooling only 2
- Heat pump 2
- Indoor unit 2
- Outdoor unit 2
- Super multi nx e f g k series 2
- Cooling only 3
- Cooling only 7 3
- Function of ra indoor unit 3 3
- Heat pump 3
- Heat pump 4 3
- Introduction vi 3
- Outdoor unit 4 2 indoor unit 7 3
- Part 1 list of functions 3
- Part 2 specifications 6 3
- Part 3 printed circuit board connector wiring diagram 3 3
- Part 4 function and control 2 3
- Table of contents 3
- Wired remote controller 0 3
- Function of sa indoor unit 04 4
- Function of thermistor 10 4 control specification 12 4
- Part 5 remote controller 28 4
- Ra indoor unit 29 4
- Sa indoor unit 45 4
- Code indication on remote controller 67 5
- Part 6 service diagnosis 48 5
- Problem symptoms and measures 53 3 service check function 54 5
- Troubleshooting for outdoor unit 00 5
- Troubleshooting for ra indoor unit 70 5
- Troubleshooting for sa indoor unit 84 5
- Troubleshooting with led 50 5
- Check 30 6
- Field settings 50 6
- Part 7 trial operation and field settings 41 6
- Part 8 appendix 63 6
- Piping diagrams 64 6
- Pump down operation 42 2 forced operation 43 3 wiring error check function 44 4 trial operation 46 6
- Removal procedure booklet no 89 6
- Silicon grease on power transistor diode bridge 62 6
- Wiring diagrams 76 6
- Cautions regarding safety of workers 7
- Introduction 7
- Safety cautions 7
- Warning 7
- Caution 8
- Warning 8
- Cautions regarding safety of users 9
- Warning 9
- Caution 10
- Warning 10
- Caution 11
- Icons are used to attract the attention of the reader to specific information the meaning of each icon is described in the table below 11
- Used icons 11
- Cooling only 12
- Heat pump 12
- Part 1 list of functions 12
- Cooling only 13
- List of functions 2 13
- Note holding functions no functions 13
- Outdoor unit 13
- Sibe121135_a cooling only 13
- Cooling only sibe121135_a 14
- Indoor unit 14
- List of functions 14
- Note holding functions no functions 14
- List of functions 4 15
- Note holding functions no functions 1 2 with wireless remote controller with wired remote controller 15
- Sibe121135_a cooling only 15
- Cooling only sibe121135_a 16
- List of functions 16
- Note holding functions no functions 1 2 with wireless remote controller with wired remote controller 16
- Heat pump 17
- List of functions 6 17
- Note holding functions no functions 17
- Outdoor unit 17
- Sibe121135_a heat pump 17
- Heat pump sibe121135_a 18
- List of functions 18
- Note holding functions no functions 18
- Indoor unit 19
- List of functions 8 19
- Note holding functions no functions 19
- Sibe121135_a heat pump 19
- Heat pump sibe121135_a 20
- List of functions 20
- Note holding functions no functions 20
- List of functions 10 21
- Note holding functions no functions 21
- Sibe121135_a heat pump 21
- Heat pump sibe121135_a 22
- List of functions 22
- Note holding functions no functions 22
- List of functions 12 23
- Note holding functions no functions 23
- Sibe121135_a heat pump 23
- Heat pump sibe121135_a 24
- List of functions 24
- Note holding functions no functions 24
- List of functions 14 25
- Note holding functions no functions 1 2 with wireless remote controller with wired remote controller 25
- Sibe121135_a heat pump 25
- Heat pump sibe121135_a 26
- List of functions 26
- Note holding functions no functions 1 2 with wireless remote controller with wired remote controller 26
- Cooling only 7 27
- Heat pump 4 27
- Part 2 specifications 27
- Cooling only 28
- Hz 230 v 28
- Outdoor unit 28
- Hz 230 v 29
- Sibe121135_a cooling only 29
- Specifications 18 29
- Cooling only sibe121135_a 30
- Indoor unit 30
- Specifications 30
- Wall mounted type 50 hz 220 230 240 v 30
- Hz 220 230 240 v 31
- Sibe121135_a cooling only 31
- Specifications 20 31
- Ceiling mounted cassette type 50 hz 230 v 32
- Cooling only sibe121135_a 32
- Specifications 32
- Ceiling suspended type 50 hz 220 230 240 v 33
- Sibe121135_a cooling only 33
- Specifications 22 33
- Ceiling mounted built in type 50 hz 220 230 240 v 50 hz 230 v 60 hz 220 v 34
- Cooling only sibe121135_a 34
- Specifications 34
- Heat pump 35
- Hz 230 v 35
- Outdoor unit 35
- Heat pump sibe121135_a 36
- Hz 230 v 36
- Specifications 36
- Hz 230 v 37
- Sibe121135_a heat pump 37
- Specifications 26 37
- Heat pump sibe121135_a 38
- Hz 230 v 38
- Specifications 38
- Indoor unit 39
- Sibe121135_a heat pump 39
- Specifications 28 39
- Wall mounted type 50 hz 220 230 240 v 39
- Heat pump sibe121135_a 40
- Hz 220 230 240 v 40
- Specifications 40
- Hz 220 230 240 v 41
- Sibe121135_a heat pump 41
- Specifications 30 41
- Heat pump sibe121135_a 42
- Hz 220 230 240 v 42
- Specifications 42
- Hz 220 230 240 v 43
- Sibe121135_a heat pump 43
- Specifications 32 43
- Heat pump sibe121135_a 44
- Hz 220 230 240 v 44
- Specifications 44
- Hz 220 230 240 v 45
- Sibe121135_a heat pump 45
- Specifications 34 45
- Floor standing type 50 hz 220 230 240 v 46
- Heat pump sibe121135_a 46
- Specifications 46
- Hz 220 230 240 v 47
- Sibe121135_a heat pump 47
- Specifications 36 47
- Floor ceiling suspended dual type 50 hz 220 230 240 v 48
- Heat pump sibe121135_a 48
- Hz 220 230 240 v 50 hz 230 v 48
- Specifications 48
- Duct connected type 50 hz 230 v 49
- Sibe121135_a heat pump 49
- Specifications 38 49
- Ceiling mounted cassette type 50 hz 220 230 240 v 50
- Heat pump sibe121135_a 50
- Specifications 50
- Hz 230 v 51
- Sibe121135_a heat pump 51
- Specifications 40 51
- Ceiling suspended type 50 hz 220 230 240 v 52
- Heat pump sibe121135_a 52
- Specifications 52
- Ceiling mounted built in type 50 hz 220 230 240 v 50 hz 230 v 60 hz 220 v 53
- Sibe121135_a heat pump 53
- Specifications 42 53
- Outdoor unit 4 2 indoor unit 7 54
- Part 3 printed circuit board connector wiring diagram 54
- Wired remote controller 0 54
- Main pcb 55
- Outdoor unit 55
- 75 class 56
- 90 class 56
- Outdoor unit sibe121135_a 56
- Printed circuit board connector wiring diagram 56
- Service monitor pcb 57
- Control pcb 58
- Ftxg25 35 50jv1bw a 58
- Indoor unit 58
- Intelligent eye sensor pcb 59
- Signal receiver display pcb 59
- Control pcb 60
- Ctxs15 35k2v1b ftxs20 25k2v1b 60
- Display pcb 61
- Intelligent eye sensor pcb 61
- Control pcb 62
- Ftxs35 42 50k2v1b ftxs25 35 42 50j2v1b atxs20 25 35 42 50g2v1b 62
- Display pcb 63
- Intelligent eye sensor pcb 63
- Signal receiver pcb 63
- Control pcb 64
- Ftxs60 71gv1b 64
- Display pcb 65
- Intelligent eye sensor pcb 65
- Signal receiver pcb 65
- Fvxg25 35 50k2v1b 66
- Display pcb 67
- Service pcb 67
- Control pcb 68
- Fvxs25 35 50fv1b 68
- Display pcb 69
- Service pcb 69
- Control pcb 70
- Flxs25 35 50 60bavmb 70
- Display pcb 71
- Power supply pcb 71
- Signal receiver pcb 71
- Control pcb 72
- Fdxs25 35e7vmb fdxs50 60c7vmb 72
- Display pcb 73
- Fcqg35 50 60fveb 74
- A3p humidity sensor pcb 75
- Control pcb 76
- Ffq25 35 50 60b9v1b 76
- Control pcb 77
- Fhq35 50 60bwv1b 77
- Control pcb 78
- Fdbq25b8v1 78
- Control pcb 79
- Fan pcb for fbq35 50c8veb 79
- Fbq35 50 60c8veb 79
- Capacitor pcb fbq60c8veb only 80
- Fan pcb for fbq60c8veb 80
- Brc1d528 81
- Connectors and other parts 81
- Pcb detail 81
- Wired remote controller 81
- Brc1e52a7 brc1e52b7 82
- Connectors and other parts 82
- P1 p2 terminal for indoor unit 2 r1t room temperature thermistor 82
- Pcb detail 82
- Function of ra indoor unit 3 83
- Function of sa indoor unit 04 83
- Function of thermistor 10 4 control specification 12 83
- Part 4 function and control 83
- Additional control parameters 84
- Definitions of temperatures 84
- Frequency principle 84
- Function of ra indoor unit 84
- Inverter principle 84
- Main control parameters 84
- Temperature control 84
- Drawing of inverter 85
- Forced operation 85
- Frequency limits 85
- Inverter features 85
- Refer to page 243 for detail 85
- The following drawing shows a schematic view of the inverter principle 85
- The following functions regulate the minimum and maximum frequency 85
- 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 85
- Control flow 86
- Function and control 86
- Function of ra indoor unit sibe121135_a 86
- Operation starting control 86
- Outline 86
- Timing chart 86
- Wall mounted type ftxg series the system carries out the following control at the beginning to conduct every functional parts properly 1 opening the front panel fully 2 output of the d signal after the front panel starts moving 3 opening the flap fully after the front panel opens fully 4 making the fan rotate when the flap passes over the fan banned area 86
- Airflow direction control 87
- Auto swing 87
- Ctxs ftxs20 25k 87
- 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 87
- During heating operation the large flap directs airflow downward to spread the warm air to the entire room 87
- Ftxs g 87
- Ftxs j 87
- Ftxs35 42 50k 87
- Function and control 76 87
- Power airflow dual flaps 87
- Series vertical swing up and down horizontal swing right and left cooling dry heating fan 87
- Sibe121135_a function of ra indoor unit 87
- The following table explains the auto swing process for cooling dry heating and fan wall mounted type 87
- The large flap sends a large volume of air downward to the floor the flap provides an optimum control in cooling dry and heating operation 87
- The louvers made of elastic synthetic resin provide a wide range of airflow that guarantees comfortable air distribution 87
- Wide angle louvers 87
- Floor ceiling suspended dual type 88
- Floor standing type fvxg series the swinging range of the flap is the same in any operation mode 88
- Floor standing type fvxs series 88
- 1 the vertical blades louvers move from the right to the left 2 the horizontal blades flaps move downward 3 the vertical blades louvers move from the left to the right 4 the horizontal blades flaps move upward 89
- Comfort airflow operation 89
- D airflow 89
- Wall mounted type ftxs j g atxs series alternative repetition of vertical and horizontal swing motions enables uniform air conditioning of the entire room this function is effective for starting the air conditioner 89
- Wall mounted type the vertical swing flap is controlled not to blow the air directly at the people in the room 89
- When the horizontal swing and vertical swing are both set to automatic operation the airflow becomes 3 d airflow the horizontal and vertical swing motions are alternated and the airflow direction changes in the order shown in the following diagram 89
- Airflow selection setting 90
- Before opening the front panel be sure to stop the operation and turn the breaker off do not touch the aluminum fins indoor heat exchanger inside of the indoor unit as it may result in injury 90
- Caution 90
- During dry operation air is blown upper air outlet so that cold air does not come into direct contact with people 90
- Floor standing type fvxs series airflow direction can be set with the airflow selection switch open the front panel 90
- When setting the airflow selection switch to regardless of the operating mode or situation air is blown from the upper air outlet use this switch when you do not want air coming out of the lower air outlet e g while sleeping 90
- When setting the airflow selection switch to the air conditioner automatically decides the appropriate blowing pattern depending on the operating mode situation 90
- Automatic fan speed control 91
- Comfort airflow operation 91
- Fan speed control for indoor unit 91
- Outline 91
- Indoor electronic expansion valve motor operated valve control 92
- Initializing with power on 92
- Opening limit control 92
- Operation stop control 92
- Outline 92
- Radiant operation 92
- Starting operation control 92
- Target panel temperature control 92
- Indoor unit fan control 93
- Radiant operation and optional function 93
- Some optional function cannot be used with radiant 1 or radiant 2 at the same time 93
- The movement of the indoor unit fan is different whether in radiant 1 or radiant 2 93
- Detail 94
- Outline 94
- Program dry operation 94
- 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 94
- 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 an appropriate capacity for each zone to maintain the temperature and humidity at a comfortable level 94
- Zone a thermostat off 94
- Zone b zone b 94
- Zone c thermostat on 94
- Automatic operation 95
- Detail 95
- Outline 95
- Detail 96
- Ftxg ftxs35 42 50k ftxs g fvxg series 96
- Function and control 96
- Function of ra indoor unit sibe121135_a 96
- Other models 96
- Outline 96
- Refer to temperature control on page 73 for detail 96
- The monitoring time has passed while the temperature difference is in the zone b cooling dry 10 minutes heating radiant 10 seconds 96
- The operation turns on in any zones except a 96
- The system resumes from defrost control in any zones except a 96
- Thermostat control 96
- Thermostat control is based on the difference between the room thermistor temperature and the target temperature 96
- Thermostat off condition the temperature difference is in the zone a 96
- Thermostat on condition the temperature difference returns to the zone c after being in the zone a 96
- Detail 97
- Function and control 86 97
- Night set mode 97
- Outline 97
- Sibe121135_a function of ra indoor unit 97
- 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 97
- When the off timer is set the night set mode is automatically activated the night set mode keeps the airflow rate setting 97
- Detail 98
- Econo operation 98
- Outline 98
- Detail 99
- Home leave operation 99
- Outline 99
- How to set the temperature and airflow rate when using home leave operation for the first time set the temperature and airflow rate for home leave operation record your preferred temperature and airflow rate 100
- Others 100
- Press the home leave button make sure is displayed on the remote controller display 2 adjust the temperature with or as you like 3 adjust the airflow rate with the fan setting button as you like home leave operation will run with these settings the next time you start home leave operation to change the recorded information repeat steps 1 3 100
- The set temperature and airflow rate are memorized in the remote controller when the remote controller is reset due to replacement of battery it is necessary to set the temperature and airflow rate again for home leave operation the operation mode cannot be changed while home leave operation is being used 100
- Detail 101
- Intelligent eye operation 101
- Others 101
- Outline 101
- Area intelligent eye operation 102
- Detail 102
- Outline 102
- Airflow direction in 2 area intelligent eye operation detection method the opposite area of detected area is set as the target direction 103
- Area a area b 103
- 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 103
- For dry operation you cannot set the temperature with remote controller but internally the target temperature is shifted 103
- Function and control 92 103
- Indoor unit 103
- Left right 103
- Motions for example in cooling 103
- Others 103
- Sibe121135_a function of ra indoor unit 103
- Top view 103
- When the detection signal is off for 20 minutes in both area a and b the unit starts energy saving operation 103
- 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 in case of fan operation the fan speed reduces by 60 rpm 103
- 40 90 rpm depending on the model 104
- Detail 104
- Ex powerful operation in cooling 104
- 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 104
- Inverter powerful operation 104
- Note for floor standing type fvxg series powerful operation is only available in radiant 1 radiant operation with heating it is not available in radiant 2 radiant operation only 104
- Outline 104
- When the powerful button is pressed the fan speed and target temperature are converted to the following states for 20 minutes 104
- Brightness setting 105
- Features 105
- Multi colored indicator lamp timer lamp 105
- Brightness setting of the indoor unit display 106
- Arc433 series 107
- Arc466 series arc452 series 107
- Clock setting 107
- Detail 108
- Ftxg ctxs ftxs fvxg fvxs series up to 4 timer settings can be saved for each day of the week up to 28 settings in total the 3 items on off temperature and time can be set 108
- Outline 108
- Using in these cases of weekly timer 108
- Weekly timer operation 108
- Press to select the desired day of the week and reservation number 109
- Press to select the desired mode 109
- To use weekly timer operation 109
- Press to complete the setting 110
- Press to select the desired temperature 110
- Press to select the desired time 110
- C 27 c 111
- Copy copy 111
- Press to complete the setting 111
- Press to confirm the day of the week to be copied 111
- Press to select the destination day of the week 111
- Caution 112
- Press to exit confirming mode 112
- Press to select the day of the week and the reservation number to be confirmed 112
- Press while is displayed on the lcd 112
- Be deleted 113
- Hold for 5 seconds 113
- Hold for 5 seconds while normal display 113
- Press and select blank 113
- Press to select the day of the week and the reservation number to be deleted 113
- Press to select the day of the week to 113
- To delete reservations 113
- Air purifying filter 114
- Auto restart function 114
- Hot start function 114
- Indoor unit on off button 114
- Other functions 114
- Photocatalytic deodorizing filter 114
- Signal receiving sign 114
- Titanium apatite photocatalytic air purifying filter 114
- Drain pump control 115
- Function of sa indoor unit 115
- 4 malfunction residual if the float switch is tripped 5 times in succession a drain malfunction is determined to have occurred af is then displayed as operation continues 5 malfunction residual the remote controller displays a3 and the air conditioner comes to an abnormal stop if the float switch is off for more than 5 minutes in the case of 4 116
- During heating operation if the float switch is not reset even after the 5 minutes operation 5 seconds stop 5 minutes operation cycle ends operation continues until the switch is reset 116
- When the float switch is tripped and af is displayed on the remote controller 116
- When the float switch is tripped during heating operation 116
- Cooling 117
- Thermostat sensor in remote controller 117
- A b c d 118
- Assuming suction temperature has changed from 28 c to 18 c d a remote controller thermostat sensor is used for temperatures from 28 c to 23 c d b body thermostat sensor is used for temperatures from 23 c to 18 c b a 118
- Assuming the set temperature in the figure above is 24 c and the suction temperature has changed from 18 c to 28 c a d this example also assumes there are several other air conditioners and the suction temperature changes even when the thermostat sensor is off body thermostat sensor is used for temperatures from 18 c to 25 c a c remote controller thermostat sensor is used for temperatures from 25 c to 28 c c d 118
- Function and control 118
- Function of sa indoor unit sibe121135_a 118
- Heating 118
- When heating the hot air rises to the top of the room resulting in the temperature being lower near the floor where the occupants are when controlling by body thermostat sensor only the indoor unit may therefore be turned off by the thermostat before the lower part of the room reaches the set temperature the temperature can be controlled so the lower part of the room where the occupants are does not become cold by widening the range in which thermostat sensor in remote controller can be used so that suction temperature is higher than the set temperature 118
- Conditions for starting temperature is 1 c or less for total of 40 min or temperature is 5 c or less for total of 10 min conditions for cancelling temperature is 7 c or more for 10 min continuously 119
- Ex case where temperature is 5 c or less for total of 10 min 119
- Freeze prevention control 119
- Function and control 108 119
- Sibe121135_a function of sa indoor unit 119
- When the temperature detected by liquid pipe thermistor r2t of the indoor heat exchanger drops too low the unit enters freeze prevention control in accordance with the following conditions and is also set in accordance with the conditions given below 119
- Detail 120
- Hot start control in heating operation only 120
- Outline 120
- 1 outdoor heat exchanger thermistor 121
- Cooling only model 121
- Function and control 110 121
- Function of thermistor 121
- Heat pump model 121
- Sibe121135_a function of thermistor 121
- The illustrations are for the 4 room models as representative and have 4 lines of indoor unit system a d the 3 room models have 3 lines a c and the 5 room models have 5 lines a e 121
- The outdoor heat exchanger thermistor is used for controlling the target discharge pipe temperature the system sets the target discharge pipe temperature according to the outdoor and indoor heat exchanger temperature and controls the outdoor electronic expansion valve opening so that the target discharge pipe temperature can be obtained 2 in cooling operation the outdoor heat exchanger thermistor is used for detecting the disconnection of the discharge pipe thermistor when the discharge pipe temperature drops below the outdoor heat exchanger temperature by more than a certain value the discharge pipe thermistor is judged as disconnected 3 in cooling operation the outdoor heat exchanger thermistor is used for high pressure protection 121
- 2 discharge pipe thermistor 122
- 3 gas pipe thermistor 122
- 4 indoor heat exchanger thermistor 122
- 5 liquid pipe thermistor 122
- 6 radiant panel thermistors 122
- Air conditioner control has normal operation mode forced operation mode and power transistor test mode for installation and servicing 123
- Control specification 123
- Cooling only model 123
- Detail 123
- Determine operation mode the system judges the operation mode command which is set by each room in accordance with the procedure and determines the operation mode of the system the following procedure is taken when the modes conflict with each other 1 the system follows the mode which is set first first push first set 2 for the rooms where the different mode is set standby mode is activated the operation lamp blinks 123
- Heat pump model 123
- Mode hierarchy 123
- Note unless specified otherwise a dry operation command is regarded as cooling operation and a radiant operation command is regarded as heating operation indoor fan operation cannot be made in multiple indoor units a forced fan command is made during forced cooling operation 123
- Outline 123
- Detail 124
- Frequency control 124
- Outline 124
- Determine lower limit frequency the maximum value is set as the lower limit frequency among the frequency lower limits of the following functions four way valve operation compensation draft prevention pressure difference upkeep 125
- Determine prohibited frequency there is a certain prohibited frequency such as a power supply frequency 125
- Determine upper limit frequency the minimum value is set as upper limit frequency among the frequency upper limits of the following functions compressor protection input current discharge pipe temperature low hz high pressure limit heating peak cut freeze up protection defrost 125
- For heat pump model 1 determine command frequency command frequency is determined in the following order of priority 1 limiting defrost control time 2 forced cooling heating 3 indoor frequency command 125
- Indoor frequency command d signal the difference between a room thermistor temperature and the target temperature is taken as the d signal and is used for frequency command 125
- Indoor unit capacity s value the capacity of the indoor unit is a s value and is used for frequency command 125
- Values depend on the type of indoor unit th off thermostat off 125
- When starting the compressor or when conditions are varied due to the change of the operating room the frequency must be initialized according to the total of a maximum d value of each room and a total value of q σ q of the operating room the room in which the thermos is set to on q value indoor unit output determined from indoor unit volume airflow rate and other factors 125
- 3 minute standby 127
- Controls at mode changing start up 127
- Detail 127
- Four way valve operation compensation 127
- Four way valve switching 127
- Outline 127
- Preheating control 127
- Compressor protection function 128
- Detail 128
- Discharge pipe temperature control 128
- Outline 128
- 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 128
- When turning the compressor from off to on the upper limit of frequency is set as follows the function is not used when defrosting 128
- Detail 129
- Freeze up protection control 129
- Input current control 129
- Outline 129
- Detail 130
- During heating operation the indoor heat exchanger temperature determines the frequency upper limit to prevent abnormal high pressure 130
- Heating peak cut control 130
- Outline 130
- Seconds after the number of operation room is changed the maximum value of the indoor heat exchanger temperature controls the following excluding stopped rooms 130
- The operating frequency is judged with the indoor heat exchanger temperature 2 minutes after the operation starts and 130
- Detail 131
- Liquid compression protection function 131
- Outdoor fan control 131
- Outline 131
- C according to the outdoor temperature 132
- Conditions for canceling defrost the target heat exchanger temperature as the canceling condition is selected in the range of 132
- 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 38 minutes of accumulated time pass after the start of the operation or ending the previous defrosting 132
- Control specification sibe121135_a 132
- Defrost control 132
- 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 132
- Detail 132
- Function and control 132
- Outline 132
- Detail 133
- Low hz high pressure limit 133
- Outdoor electronic expansion valve control 133
- Outline 133
- 1 when all the indoor units are operating liquid pipe temperature control is conducted 2 sc subcooling control is conducted for the operating indoor units when some of the units are not operating 3 liquid pipe temperature control for stopped room is conducted for the non operating indoor units 134
- Control specification sibe121135_a 134
- Detail 134
- Function and control 134
- Holding functions no functions 134
- The followings are the examples of the outdoor electronic expansion valve control which function in each operation mode 134
- Control when the frequency changes 135
- Detail 135
- Fully closing with power on 135
- High discharge pipe temperature control 135
- Oil recovery function 135
- Opening limit control 135
- Outline 135
- Pressure equalizing control 135
- Starting operation control changing operation room 135
- Control for disconnection of the discharge pipe thermistor 136
- Detail 136
- Gas pipe isothermal control during cooling 136
- Outline 136
- Sc subcooling control 136
- Detail 137
- Detection of overcurrent and overload 137
- Malfunctions 137
- Outline 137
- Sensor malfunction detection 137
- Target discharge pipe temperature control 137
- Anti icing function 138
- Outline 138
- Refrigerant shortage control 138
- Part 5 remote controller 139
- Ra indoor unit 29 139
- Sa indoor unit 45 139
- Button 140
- Display lcd 140
- Fan setting button 140
- Ftxg25 35 50jv1bw a ctxs15 35k2v1b ftxs20 25k2v1b 140
- On off button 140
- Powerfu 140
- Ra indoor unit 140
- Reference 140
- Signal transmitter 140
- Temperature adjustment buttons 140
- Button 141
- Comfor 141
- Mode button 141
- Off timer button 141
- On timer button 141
- Quiet button 141
- Select button 141
- Sensor button 141
- Timer cancel button 141
- Button 142
- Display lcd 142
- Fan setting button 142
- Ftxs35 42 50k2v1b 142
- 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 142
- On off button 142
- Powerfu 142
- Refer to the following pages for detail 142
- Reference 142
- Signal transmitter 142
- Temperature adjustment buttons 142
- Button 143
- Comfort airflow operatio 143
- Comfort sensor button 143
- Intelligent eye operatio 143
- Lamp brightness setting butto 143
- Mode button 143
- Off timer button 143
- On timer button 143
- Open the front cover 143
- Outdoor unit quiet button 143
- Reference 143
- Select button 143
- Timer cancel button 143
- Button 144
- Display lcd 144
- Fan setting button 144
- Ftxs25 35 42 50j2v1b ftxs60 71gv1b 144
- 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 144
- On off button 144
- Powerfu 144
- Refer to the following pages for detail 144
- Reference 144
- Signal transmitter 144
- Temperature adjustment buttons 144
- The remote controller is compatible with both cooling only and heat pump model 144
- Button 145
- Comfort sensor button 145
- Mode button 145
- Off timer button 145
- On timer button 145
- Open the front cover 145
- Quiet button 145
- Reference 145
- Select button 145
- Timer cancel button 145
- Weekly button 145
- Atxs20 25 35 42 50g2v1b 146
- Button 146
- Display lcd 146
- On off button 146
- Powerfu 146
- Reference 146
- Signal transmitter 146
- Temperature adjustment buttons 146
- Button 147
- Comfort sensor button 147
- Fan setting button 147
- Intelligent eye operatio 147
- Mode button 147
- Off timer button 147
- On timer button 147
- Quiet button 147
- Reset button 147
- Timer cancel button 147
- Timer setting button 147
- Button 148
- Display lcd 148
- Fan setting button 148
- Fvxg25 35 50k2v1b 148
- 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 148
- On off button 148
- Radian 148
- Refer to the following pages for detail 148
- Reference 148
- Signal transmitter 148
- Temperature adjustment buttons 148
- Button 149
- Lamp brightness setting butto 149
- Mode button 149
- Off timer button 149
- On timer button 149
- Open the front cover 149
- Powerfu 149
- Quiet button 149
- Reference 149
- Select button 149
- Timer cancel button 149
- Button 150
- Display lcd 150
- Fan setting button 150
- Fvxs25 35 50fv1b 150
- 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 150
- On off button 150
- Powerfu 150
- Refer to the following pages for detail 150
- Reference 150
- Signal transmitter 150
- Temperature adjustment buttons 150
- Button 151
- Mode button 151
- Off timer button 151
- On timer button 151
- Open the front cover 151
- Quiet button 151
- Reference 151
- Select button 151
- Timer cancel button 151
- Weekly button 151
- Button 152
- Display lcd 152
- Flxs25 35 50 60bavmb 152
- Home leav 152
- 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 152
- On off button 152
- Powerfu 152
- Refer to the following pages for detail 152
- Reference 152
- Signal transmitter 152
- Temperature adjustment buttons 152
- Button 153
- Fan setting button 153
- Mode button 153
- 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 153
- Off timer button 153
- On timer button 153
- Open the front cover 153
- Quiet button 153
- Refer to the following pages for detail 153
- Reference 153
- Reset button 153
- Timer cancel button 153
- Timer setting button 153
- Button 154
- Display lcd 154
- Fdxs25 35e7vmb fdxs50 60c7vmb 154
- Home leav 154
- 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 154
- On off button 154
- Powerfu 154
- Refer to the following pages for detail 154
- Reference 154
- Signal transmitter 154
- Temperature adjustment buttons 154
- Button 155
- Fan setting button 155
- Mode button 155
- 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 155
- Off timer button 155
- On timer button 155
- Open the front cover 155
- Quiet button 155
- Refer to the following pages for detail 155
- Reference 155
- Reset button 155
- Timer cancel button 155
- Timer setting button 155
- Brc1d528 156
- Sa indoor unit 156
- Remote controller 146 157
- Sibe121135_a sa indoor unit 157
- This button sets the ventilation amount refer to the 157
- This icon indicates that the defrost hotstart mode is active 157
- Remote controller 158
- Sa indoor unit sibe121135_a 158
- Code indication on remote controller 67 159
- Part 6 service diagnosis 159
- Problem symptoms and measures 53 3 service check function 54 159
- Troubleshooting for outdoor unit 00 159
- Troubleshooting for ra indoor unit 70 159
- Troubleshooting for sa indoor unit 84 159
- Troubleshooting with led 50 159
- Check 30 160
- Indoor unit 161
- Operation lamp 161
- Troubleshooting with led 161
- Service monitor 162
- Outdoor unit 163
- Service diagnosis 152 163
- Sibe121135_a troubleshooting with led 163
- The outdoor unit has a green led led a and red leds led 1 led 5 on the pcb when the microcomputer works in order the led a blinks and when the system is in normal condition the red leds are off even after the error is canceled and the unit operates in normal condition the led indication remains 163
- Problem symptoms and measures 164
- Arc466 series remote controller 165
- Ra indoor unit 165
- Service check function 165
- Check method 2 166
- Arc452 series remote controller 168
- Check method 1 168
- Note 1 a short beep or 2 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 158 168
- When the timer cancel button is held down for 5 seconds 00 is displayed on the temperature display screen 168
- Check method 2 169
- Arc433 series remote controller 171
- Check method 1 171
- Timer cancel button 171
- Check method 2 172
- Brc1d528 174
- Relations between modes 174
- Sa indoor unit 174
- The following modes can be selected by using the inspection test button on the remote controller 174
- Brc1e52a7 brc1e52b7 175
- Service diagnosis 164 175
- Sibe121135_a service check function 175
- Brc1d528 176
- Brc1e52a7 brc1e52b7 177
- Code indication on remote controller 178
- Error code displays automatically and system stops inspect and solve the error 178
- In the case of the shaded error codes inspection is not displayed the system operates but be sure to inspect and solve the error 178
- Note when there is a possibility of open phase power supply also check power supply 178
- Ra indoor unit 178
- Sa indoor unit 178
- If an error code like the one shown below is displayed when the navigation remote controller brc1e52a7 brc1e52b7 is in use make a detailed diagnosis or a diagnosis of the relevant unit referring to the attached list 179
- Sub codes for sa indoor unit 179
- Outdoor unit 180
- Error code 181
- Error decision conditions 181
- Indoor unit pcb abnormality 181
- Method of error detection 181
- Supposed causes 181
- Troubleshooting for ra indoor unit 181
- Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged 182
- Caution 182
- Floor ceiling suspended dual type s36 s37 duct connected type terminal board control pcb h1 h2 h3 182
- Model type connector 182
- Note check the following connector 182
- Service diagnosis 182
- Troubleshooting 182
- Troubleshooting for ra indoor unit sibe121135_a 182
- Wall mounted type terminal board control pcb h1 h2 h3 floor standing type terminal board control pcb h1 h2 h3 182
- Check no 1 refer to p 30 183
- Error code 183
- Error decision conditions 183
- 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 indoor heat exchanger temperature is used for the heating peak cut control operation halt outdoor fan stop etc 183
- 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 65 c 183
- Freeze up protection control or heating peak cut control 183
- Method of error detection 183
- Service diagnosis 172 183
- 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 183
- Sibe121135_a troubleshooting for ra indoor unit 183
- Supposed causes 183
- Troubleshooting 183
- Dc motor wall mounted type floor standing type 184
- Error code 184
- Error decision conditions 184
- Fan motor or related abnormality 184
- Method of error detection 184
- Supposed causes 184
- Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged 185
- Caution 185
- Check no 2 refer to p 31 185
- Ftxg ftxs35 42 50k ftxs j ftxs g atxs fvxg fvxs series 185
- Service diagnosis 174 185
- Sibe121135_a troubleshooting for ra indoor unit 185
- Troubleshooting 185
- Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged 186
- Caution 186
- Check no 3 refer to p 31 186
- Ctxs ftxs20 25k series 186
- Service diagnosis 186
- Troubleshooting 186
- Troubleshooting for ra indoor unit sibe121135_a 186
- Ac motor floor ceiling suspended dual type duct connected type 187
- Error code 187
- Error decision conditions 187
- Method of error detection 187
- Supposed causes 187
- Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged 188
- Caution 188
- Check no 4 refer to p 32 188
- Service diagnosis 188
- Troubleshooting 188
- Troubleshooting for ra indoor unit sibe121135_a 188
- Error code 189
- Error decision conditions 189
- Method of error detection 189
- Radiant panel temperature rise indoor electronic expansion valve motor operated valve abnormality freeze up protection control fvxg series only 189
- Supposed causes 189
- Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged 190
- Caution 190
- Check no 1 refer to p 30 190
- Check no 6 refer to p 32 190
- Service diagnosis 190
- Troubleshooting 190
- Troubleshooting for ra indoor unit sibe121135_a 190
- C4 c9 ce 191
- Error code 191
- Error decision conditions 191
- Method of error detection 191
- Supposed causes 191
- Thermistor or related abnormality ra indoor unit 191
- Troubleshooting 191
- 1 turn off the power 2 remove the front panel 3 turn on the power wait until the initialization finishes 4 operate the unit by the indoor unit on off button 192
- Defective reduction motor malfunction or deterioration of the front panel mechanism defective limit switch 192
- Error code 192
- Error decision conditions 192
- Front panel open close fault ftxg series only 192
- If the error repeats the system is shut down 192
- Method of error detection 192
- Service diagnosis 192
- Supposed causes 192
- Troubleshooting 192
- Troubleshooting for ra indoor unit sibe121135_a 192
- Check no 1 refer to p 33 193
- Error code 193
- Error decision conditions 193
- Method of error detection 193
- Service diagnosis 182 193
- Sibe121135_a troubleshooting for ra indoor unit 193
- Signal transmission error between indoor unit and outdoor unit 193
- Supposed causes 193
- The data received from the outdoor unit in signal transmission is checked whether it is normal 193
- The data sent from the outdoor unit cannot be received normally or the content of the data is abnormal 193
- Troubleshooting 193
- Wiring error breaking of the connection wires between the indoor and outdoor units wire no 3 defective outdoor unit pcb short circuit inside the fan motor winding defective indoor unit pcb disturbed power supply waveform 193
- Error code 194
- Error decision conditions 194
- Method of error detection 194
- Supposed causes 194
- The pair type and multi type are interconnected 194
- The supply power is detected for its requirements different from pair type and multi type by the indoor outdoor transmission signal 194
- Troubleshooting 194
- Unspecified voltage between indoor unit and outdoor unit 194
- 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 194
- Error code 195
- Error decision conditions 195
- External factor noise etc defective indoor unit pcb 195
- Indoor unit pcb abnormality 195
- Method of error detection 195
- Supposed causes 195
- The data could not be correctly received from the eeprom eeprom type of nonvolatile memory maintains memory contents even when the power supply is turned off 195
- The system checks the data from eeprom 195
- Troubleshooting 195
- Troubleshooting for sa indoor unit 195
- Drain level control system abnormality 196
- Error code 196
- Error decision conditions 196
- Method of error detection 196
- Supposed causes 196
- Is detected by the indoor unit pcb which is not mounted with x15a the indoor unit pcb is defective 197
- Note if 197
- Troubleshooting 197
- Ac motor ffq fhq fdbq series 198
- Disconnection short circuit or disengagement of connector in fan motor harness defective fan motor disconnection poor insulation abnormal signal from fan motor faulty circuit defective indoor unit pcb momentary fluctuation of power supply voltage fan motor lock caused by motor or other external factors fan does not rotate due to tangled foreign matters 198
- Error code 198
- Error decision conditions 198
- Fan motor or related abnormality 198
- Method of error detection 198
- Supposed causes 198
- The fan rotations are not detected while the output voltage to the fan is at its maximum 198
- The signal from the fan motor detects abnormal fan speed 198
- Troubleshooting 198
- 2 white 199
- 3 black 199
- Fdbq series 199
- Ffq fhq series 199
- M1f blk 199
- Note 1 check the connector of fan motor power supply cable 2 turn off the power supply 3 measure the resistance between the terminals at the motor side connectors to check that there is no short circuit while the connector is disconnected 199
- Service diagnosis 188 199
- Sibe121135_a troubleshooting for sa indoor unit 199
- Dc motor fcqg series fbq35 50c8veb 200
- Error code 200
- Error decision conditions 200
- Foreign matters stuck in the fan disconnection of connector defective fan motor defective indoor unit pcb 200
- Method of error detection 200
- Supposed causes 200
- The fan rotation does not increase 200
- The signal from the fan motor detects abnormal fan speed 200
- Troubleshooting 200
- Brown 5 201
- Fcqg series fbq35 50c8veb 201
- Note check the resistance between each pin twice with the fan motor connector disconnected exchange the test leads red black of the tester at the second check criterion value higher than 1 ω both times 201
- Orange 201
- Please fill in the blanks with the resistance 201
- Service diagnosis 190 201
- Sibe121135_a troubleshooting for sa indoor unit 201
- Dc motor fbq60c8veb 202
- Error code 202
- Error decision conditions 202
- Foreign matters stuck in the fan disconnection of connector defective fan motor defective fan pcb 202
- Method of error detection 202
- Supposed causes 202
- The fan rotation does not increase 202
- The signal from the fan motor detects abnormal fan speed 202
- Troubleshooting 202
- Note check the resistance between each pin with the fan motor connector disconnected criterion value higher than 1 ω on the basis of gnd and vcc 203
- Orange 3 203
- Please fill in the blanks with the resistance 203
- Service diagnosis 192 203
- Sibe121135_a troubleshooting for sa indoor unit 203
- Yellow 203
- Defective swing motor defective micro switch disconnection of connector defective indoor unit pcb 204
- Error code 204
- Error decision conditions 204
- Method of error detection 204
- Service diagnosis 204
- Supposed causes 204
- Swing motor lock fhq series only 204
- The error is detected by the limit switch when the motor turns 204
- Troubleshooting 204
- Troubleshooting for sa indoor unit sibe121135_a 204
- When the on off micro switch for position detection cannot be reversed even though the swing motor is energized for a specified amount of time about 30 seconds 204
- Drain system abnormality 205
- Error code 205
- Error decision conditions 205
- Error in the drain pipe installation defective float switch defective indoor unit pcb 205
- In fhq problems can also occur in the optional drain pump 205
- Method of error detection 205
- Supposed causes 205
- Troubleshooting 205
- Water leakage is detected based on the float switch on off changeover while the compressor is not operating 205
- When the float switch changes from on to off while the compressor is off 205
- C4 c5 c9 206
- Error code 206
- Error decision conditions 206
- Method of error detection 206
- Supposed causes 206
- Thermistor or related abnormality sa indoor unit 206
- Troubleshooting 206
- Defective thermistor broken wire 207
- Error code 207
- Error decision conditions 207
- Even if remote controller thermistor is faulty system is possible to operate by system thermistor malfunction detection is carried out by the temperature detected by remote controller thermistor 207
- Method of error detection 207
- Note to delete the record of error codes press the on off button for 4 seconds or more while the error code is displayed in the inspection mode 207
- Remote controller thermistor abnormality 207
- Supposed causes 207
- The remote controller thermistor is disconnected or shorted while the unit is running 207
- Troubleshooting 207
- Connection of 2 main remote controllers when using 2 remote controllers defective indoor unit pcb defective remote controller transmission error caused by noise 208
- Error code 208
- Error decision conditions 208
- In case of controlling with 2 remote controllers check the system using microcomputer if signal transmission between indoor unit and remote controller main and sub is normal 208
- Method of error detection 208
- Normal transmission does not continue for specified period 208
- Service diagnosis 208
- Signal transmission error between indoor unit and remote controller 208
- Supposed causes 208
- Troubleshooting 208
- Troubleshooting for sa indoor unit sibe121135_a 208
- Error code 209
- Error decision conditions 209
- In case of controlling with 2 remote controllers check the system using microcomputer if signal transmission between indoor unit and remote controller main and sub is normal 209
- Method of error detection 209
- Normal transmission does not continue for specified period 209
- Remote controller is set to sub when using 1 remote controller connection of 2 sub remote controllers when using 2 remote controllers defective remote controller pcb 209
- Service diagnosis 198 209
- Sibe121135_a troubleshooting for sa indoor unit 209
- Signal transmission error between main remote controller and sub remote controller 209
- Supposed causes 209
- Troubleshooting 209
- Defective indoor unit pcb defective outdoor unit pcb defective power supply pcb indoor outdoor indoor indoor unit transmission wiring defective remote controller wiring 210
- Error code 210
- Error decision conditions 210
- Field setting abnormality 210
- Incorrect field setting 210
- Method of error detection 210
- Service diagnosis 210
- Supposed causes 210
- Troubleshooting 210
- Troubleshooting for sa indoor unit sibe121135_a 210
- Error code 211
- Error decision conditions 211
- Method of error detection 211
- Outdoor unit led display 211
- Refrigerant shortage 211
- Supposed causes 211
- Troubleshooting for outdoor unit 211
- Caution 212
- Check no 1 refer to p 30 212
- Check no 2 refer to p 34 212
- Service diagnosis 212
- Troubleshooting 212
- Troubleshooting for outdoor unit sibe121135_a 212
- Error code 213
- Error decision conditions 213
- Low voltage detection or over voltage detection 213
- Method of error detection 213
- Outdoor unit led display 213
- Supposed causes 213
- Caution be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged 214
- Service diagnosis 214
- Troubleshooting 214
- Troubleshooting for outdoor unit sibe121135_a 214
- Error code 215
- Error decision conditions 215
- Method of error detection 215
- Outdoor unit led display 215
- Signal transmission error on outdoor unit pcb 215
- Supposed causes 215
- Troubleshooting 215
- Error code 216
- Error decision conditions 216
- Method of error detection 216
- Outdoor unit led display 216
- Supposed causes 216
- Troubleshooting 216
- Unspecified voltage between indoor unit and outdoor unit anti icing function in other rooms 216
- Anti icing control for indoor unit 217
- Error code 217
- Error decision conditions 217
- Method of error detection 217
- Outdoor unit led display 217
- Supposed causes 217
- Caution 218
- Check no 1 refer to p 30 218
- Check no 2 refer to p 34 218
- Service diagnosis 218
- Troubleshooting 218
- Troubleshooting for outdoor unit sibe121135_a 218
- Error code 219
- Error decision conditions 219
- Method of error detection 219
- Outdoor unit led display 219
- Outdoor unit pcb abnormality 219
- Supposed causes 219
- Troubleshooting 219
- Error code 220
- Error decision conditions 220
- Method of error detection 220
- Ol activation compressor overload 220
- Outdoor unit led display 220
- Supposed causes 220
- Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged 221
- Caution 221
- Check no 1 refer to p 30 221
- Check no 2 refer to p 34 221
- Check no 3 refer to p 35 221
- Check no 4 refer to p 35 221
- Note ol q1l activating temperature 120 c ol q1l recovery temperature 95 c 221
- Service diagnosis 210 221
- Sibe121135_a troubleshooting for outdoor unit 221
- Troubleshooting 221
- A compressor lock is detected by checking the compressor running condition through the position detection circuit 222
- Check no 5 refer to p 36 222
- Compressor lock 222
- Defective outdoor unit pcb defective compressor defective outdoor electronic expansion valve 222
- Error code 222
- Error decision conditions 222
- Judging from the current waveform generated when high frequency voltage is applied to the compressor if the error repeats the system is shut down reset condition continuous run for about 5 minutes without any other error 222
- Method of error detection 222
- Outdoor unit led display 222
- Supposed causes 222
- Troubleshooting 222
- An error is determined with the high voltage fan motor rotation speed detected by the hall ic 223
- Check no 6 refer to p 37 223
- Dc fan lock 223
- Disconnection of the fan motor foreign matter stuck in the fan defective fan motor defective outdoor unit pcb 223
- Error code 223
- Error decision conditions 223
- Method of error detection 223
- Outdoor unit led display 223
- Supposed causes 223
- The fan does not start in 30 seconds even when the fan motor is running if the error repeats the system is shut down reset condition continuous run for about 5 minutes without any other error 223
- Troubleshooting 223
- Check no 5 refer to p 36 224
- Check no 7 refer to p 38 224
- Check no 8 refer to p 38 224
- Detected by checking the input current value 224
- Error code 224
- Error decision conditions 224
- Input overcurrent detection 224
- Method of error detection 224
- Outdoor temperature is out of operation range defective compressor defective power module defective outdoor unit pcb short circuit 224
- Outdoor unit led display 224
- Supposed causes 224
- The input current is at a certain value depending on the condition for 2 seconds the compressor halts if the error occurs and restarts automatically after 3 minute standby 224
- Troubleshooting 224
- Discharge pipe temperature control 225
- Error code 225
- Error decision conditions 225
- Method of error detection 225
- Outdoor unit led display 225
- Supposed causes 225
- Troubleshooting 225
- C the error is cleared when the temperature drops below about 226
- Check no 1 refer to p 30 226
- Check no 2 refer to p 34 226
- Check no 7 refer to p 38 226
- Check no 8 refer to p 38 226
- Check no 9 refer to p 39 226
- Error code 226
- Error decision conditions 226
- High pressure control in cooling 226
- High pressure control operation halt frequency drop etc is activated in cooling mode if the temperature sensed by the outdoor heat exchanger thermistor exceeds the limit 226
- Method of error detection 226
- Outdoor unit led display 226
- Supposed causes 226
- The installation space is not large enough dirty outdoor heat exchanger defective outdoor fan motor defective stop valve defective outdoor electronic expansion valve or coil defective outdoor heat exchanger thermistor defective outdoor unit pcb 226
- The temperature sensed by the outdoor heat exchanger thermistor rises above about 226
- Troubleshooting 226
- Compressor sensor system abnormality 227
- Error code 227
- Error decision conditions 227
- Method of error detection 227
- Outdoor unit led display 227
- Supposed causes 227
- Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged 228
- Caution 228
- Service diagnosis 228
- Troubleshooting 228
- Troubleshooting for outdoor unit sibe121135_a 228
- Error code 229
- Error decision conditions 229
- Method of error detection 229
- Outdoor unit led display 229
- Position sensor abnormality 229
- Supposed causes 229
- Caution be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged 230
- Check no 5 refer to p 36 230
- Check no 8 refer to p 38 230
- Service diagnosis 230
- Troubleshooting 230
- Troubleshooting for outdoor unit sibe121135_a 230
- Ct or related abnormality 231
- Error code 231
- Error decision conditions 231
- Method of error detection 231
- Outdoor unit led display 231
- Supposed causes 231
- Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged 232
- Caution 232
- Check no 1 refer to p 39 232
- Check no 5 refer to p 36 232
- Service diagnosis 232
- Troubleshooting 232
- Troubleshooting for outdoor unit sibe121135_a 232
- Error code 233
- Error decision conditions 233
- H9 j3 j6 j8 j9 p4 233
- Method of error detection 233
- Outdoor unit led display 233
- Supposed causes 233
- Thermistor or related abnormality outdoor unit 233
- Troubleshooting 233
- Check no 1 refer to p 30 234
- H9 outdoor temperature thermistor j3 discharge pipe thermistor j6 outdoor heat exchanger thermistor j8 liquid pipe thermistor j9 gas pipe thermistor 234
- In case of 234
- Service diagnosis 234
- Troubleshooting 234
- Troubleshooting for outdoor unit sibe121135_a 234
- Electrical box temperature rise 235
- Error code 235
- Error decision conditions 235
- Method of error detection 235
- Outdoor unit led display 235
- Supposed causes 235
- A c b c c c 236
- Caution 236
- Check no 7 refer to p 38 236
- Check no 9 refer to p 39 236
- Service diagnosis 236
- Troubleshooting 236
- Troubleshooting for outdoor unit sibe121135_a 236
- Error code 237
- Error decision conditions 237
- Method of error detection 237
- Outdoor unit led display 237
- Radiation fin temperature rise 237
- Supposed causes 237
- 50 52 58 68 75 class 103 80 90 class 105 238
- Caution 238
- Check no 7 refer to p 38 238
- Check no 9 refer to p 39 238
- Note refer to silicon grease on power transistor diode bridge on page 262 for detail 238
- Service diagnosis 238
- Troubleshooting 238
- Troubleshooting for outdoor unit sibe121135_a 238
- Error code 239
- Error decision conditions 239
- Method of error detection 239
- Outdoor unit led display 239
- Output overcurrent detection 239
- Supposed causes 239
- Caution 240
- Check no 2 refer to p 40 240
- Check no 5 refer to p 36 240
- Check no 7 refer to p 38 240
- Check no 8 refer to p 38 240
- Service diagnosis 240
- Troubleshooting 240
- Troubleshooting for outdoor unit sibe121135_a 240
- Check no 1 241
- 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 241
- Thermistor resistance check 241
- When the room temperature thermistor is directly mounted on a pcb remove the pcb from the control pcb to measure the resistance when the connector of indoor heat exchanger thermistor is soldered on the pcb remove the thermistor and measure the resistance 241
- Between the pins 12 9 and between 9 6 242
- Check no 2 242
- Check no 3 242
- Ctxs ftxs20 25k series 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 90 242
- Fan motor connector check 242
- Ftxg ftxs35 42 50k ftxs j ftxs g atxs fvxg fvxs series 1 check the connection of connector 2 check motor power supply voltage output pins 4 7 3 check motor control voltage pins 4 3 4 check rotation command voltage output pins 4 2 5 check rotation pulse input pins 4 1 242
- Motor control voltage check 1 check the connector for connection 2 check the motor control voltage is generated between the pins 2 3 242
- 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 3 242
- Check no 4 243
- Check no 6 243
- Hall ic check 243
- Indoor electronic expansion valve coil check 243
- Check no 1 244
- Power supply waveform check 244
- Check no 2 245
- Conduct the followings to check the outdoor electronic expansion valve ev 1 check to see if the ev connector is correctly inserted in the pcb match the ev unit number and the connector number 2 turn the power off and on again and check to see if all the evs generate latching sound 3 if any of the evs does not generate latching sound in the above step 2 disconnect that connector and check the continuity using a tester check the continuity between the pins 1 6 3 6 2 5 4 5 between the pins 1 5 2 5 3 5 4 5 for the harness 5p models if there is no continuity between the pins the ev coil is faulty 4 if no ev generates latching sound in the above step 2 the outdoor unit pcb is faulty 5 if the continuity is confirmed in the above step 3 mount a good coil which generated latching sound in the ev unit that did not generate latching sound and check to see if that ev generates latching sound if latching sound is generated the outdoor unit pcb is faulty if latching sound is not generated the ev uni 245
- If the system keeps operating with a defective outdoor electronic expansion valve the following problem may occur 245
- Note please note that the latching sound varies depending on the valve type 245
- Outdoor electronic expansion valve check 245
- Check no 3 246
- Check no 4 246
- Check sibe121135_a 246
- Four way valve performance check 246
- Inverter unit refrigerant system check 246
- Service diagnosis 246
- Check no 5 247
- Inverter analyzer check 247
- Check no 6 248
- Rotation pulse check on the outdoor unit pcb 248
- Check no 7 249
- Check no 8 249
- Discharge pressure check 249
- Installation condition check 249
- Service diagnosis 238 249
- Sibe121135_a check 249
- Before this check be sure to check the main circuit for short circuit with the circuit breaker still on measure the voltage according to the drawing of the model in question be careful never to touch any live parts 250
- Capacitor voltage check 250
- Check no 1 250
- Check no 9 250
- Check sibe121135_a 250
- Outdoor fan system check 250
- Service diagnosis 250
- To prevent electrical shock use a tester to check that the voltage between p and n is 50 v or less the surface of the test points p n may be covered with the coating be sure to make firm contact between the tester probes and the test points 250
- Check no 2 251
- Disconnect the compressor harness connector from the outdoor unit pcb to disengage the connector press the protrusion on the connector 251
- 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 251
- Note check to make sure that the voltage between and of the power module pm1 is approx 0 v before checking 251
- Power module check 251
- The illustration is for 40 50 52 58 class as representative 251
- Field settings 50 252
- Part 7 trial operation and field settings 252
- Pump down operation 42 2 forced operation 43 3 wiring error check function 44 4 trial operation 46 252
- Silicon grease on power transistor diode bridge 62 252
- Detail 253
- Outline 253
- Pump down operation 253
- Detail 254
- Forced operation 254
- Forced operation mode includes forced cooling and forced heating operation mode can be selected by the operation mode switch sw2 on the outdoor unit press the forced operation on off switch sw1 on the outdoor unit to start the operation 254
- Outline 254
- Operation 255
- Outline 255
- Wiring error check function 255
- Basic knowledge 256
- Checking the current setting data on the microcomputer memory 256
- Ex suppose the led indicators are blinking as follows 256
- Example 256
- Refrigerant flows from port a and on the temperatures of the indoor heat exchanger thermistors are detected one by one to check up the matching between the piping and wiring with this function on freezing crackling noise may be heard from the indoor unit this is not a problem this is because the heat exchanger temperature is made to drop below 0 c in order to increase the detection accuracy the indoor fan is made to turn on or off at the same time 256
- The above means that port a is connected with port b and port b with room a or self corrected this way 256
- Those data can be checked by looking at the service monitor led indicators when the wiring error checking is over during forced operation at the stop of the system the led indicators stop blinking when the forced operation is over led1 room a wiring led2 room b wiring 1st blinking led port a piping 2nd blinking led port b piping the 1st blinking led means the room that is connected with port a the 2nd blinking led means the one connected with port b 256
- Trial operation and field settings 256
- Wiring error check function sibe121135_a 256
- 2 4 5 1 6 257
- Detail 257
- Outline 257
- Ra indoor unit 257
- Trial operation 257
- 2 3 4 1 5 258
- Brc1d528 259
- Check points 259
- Sa indoor unit 259
- Step action 1 turn on the power supply more than 6 hours before test operation 2 open the gas stop valve 3 open the liquid stop valve 4 set to cooling operation with the remote controller and start operation by pressing on off button 5 press the inspection test operation button 4 times 2 times for wireless remote controller and operate at test operation mode for 3 minutes 6 press the airflow direction adjust button to make sure the unit is in operation 7 press the inspection test operation button and operate normally 8 confirm all the function of unit according to the operation manual 9 if the decoration panel has not been installed turn off the power after the test operation 259
- Test operation 259
- To carry out test operation check the followings check that the temperature setting of the remote controller is at the lowest level in cooling mode go through the following checklist 259
- Brc1e52a7 brc1e52b7 260
- Step action remote controller 260
- Field settings 261
- Outdoor unit 261
- Priority room setting 261
- The prioritized room will be heated cooled much more quickly 261
- Cool heat mode lock 262
- Detail 262
- Outline 262
- Detail 263
- Econo mode proof setting 263
- If night quiet mode is to be used initial settings must be made when the unit is installed explain the function of night quiet mode as described below to the customer and confirm whether or not the customer wants to use night quiet mode night quiet mode function reduces operating noise of the outdoor unit at nighttime this function is useful if the customer is worried about the effects of the operating noise on the neighbors however if night quiet mode is running cooling capacity is reduced 263
- Install the removed jumper switch as described below this jumper switch is needed later to disable this setting 263
- Night quiet mode 263
- Operation 263
- Outline 263
- Remove the sw5 jumper switch on the service monitor pcb of the outdoor unit once the settings are complete reset the power 263
- The econo mode can be switched over between effective and ineffective by pressing the forced operation on off switch sw1 on the outdoor unit and wiring error check switch sw3 on the outdoor unit at the same time and holding them for 5 seconds while the compressor is stopped the leds are lit in turn for 15 seconds to show the econo mode status the factory setting is effective 263
- You can make econo mode ineffective on the outdoor unit 263
- Model type setting 264
- Outline 264
- Ra indoor unit 264
- Wall mounted type 264
- When 2 units are installed in 1 room 264
- Address 265
- Bottom of electrical box 265
- 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 265
- Floor standing type 265
- Ftxg series ctxs ftxs20 25k 265
- Ftxs35 42 50k ftxs j atxs series ftxs g series 265
- Fvxg series 1 remove the front panel air filters and front grille 2 remove the screw and remove the service cover 265
- 3 turn on the dip switch s2w 1 on the service pcb 266
- 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 266
- Field settings sibe121135_a 266
- Keep the other switches as factory setting off fvxs series 1 remove the front grille 2 lift the sensor pcb fixing plate and remove the front shield plate 3 disconnect the connectors s1 s41 s42 4 remove the electric box 1 screw 5 pull out the indoor heat exchanger thermistor 6 remove the shield plate 8 tabs 7 cut the address setting jumper ja on the indoor unit pcb 266
- Trial operation and field settings 266
- 1 remove the cover and take it off 2 cut the address setting jumper 267
- Arc433 series 267
- Arc466 series arc452 series 267
- 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 267
- Cut the jumper ja on pcb 267
- Duct connected type 267
- Floor ceiling suspended dual type 267
- Sibe121135_a field settings 267
- Trial operation and field settings 256 267
- Wireless remote controller 267
- For the location of the jumper and the switch refer to the following pages ftxg25 35 50jv1bw a page 47 ctxs15 35 k2v1b ftxs20 25k2v1b page 49 ftxs35 42 50k2v1b ftxs25 35 42 50j2v1b atxs20 25 35 42 50g2v1b page 51 ftxs60 71gv1b page 53 fvxg25 35 50k2v1b page 55 fvxs25 35 50fv1b page 57 flxs25 35 50 60bavmb page 59 fdxs25 35e7vmb fdxs50 60c7vmb page 61 268
- Jumper and switch settings 268
- How to change the field settings 269
- Outline 269
- Sa indoor unit 269
- Wired remote controller 269
- A unit no b first code no c second code no d mode 270
- Brc1e52a7 brc1e52b7 270
- Step action remote controller 1 270
- Note 1 any function that is not available on the indoor unit is not displayed 2 271
- Overview of the field settings 271
- Detail 272
- Main sub setting when using 2 wired remote controllers 272
- Outline 272
- Detail 273
- Outline 273
- Silicon grease on power transistor diode bridge 273
- Part 8 appendix 274
- Piping diagrams 64 274
- Removal procedure booklet no 89 274
- Wiring diagrams 76 274
- Cooling only 275
- Outdoor unit 275
- Piping diagrams 275
- Accumulator 276
- Accumulator accumulator 276
- Appendix 276
- Compressor 276
- Filter 276
- Gas pipe thermistor dga 276
- Gas pipe thermistor dgb 276
- Gas pipe thermistor dgc 276
- Gas pipe thermistor dgd 276
- Gas pipe thermistor room a 276
- Gas pipe thermistor room b 276
- Gas pipe thermistor room c 276
- Gas pipe thermistor room d 276
- Gas pipe thermistor room e 276
- Header 276
- Heat exchanger thermistor de 276
- Liquid pipe 276
- Mks75f2v1b 276
- Mks90e2v3b 276
- Motor operated valve 276
- Piping diagrams sibe121135_a 276
- Refrigerant flow 276
- Room a 6 cut 276
- Room a 9 cut 276
- Room b 6 cut 276
- Room b 9 cut 276
- Room c 12 cut 276
- Room c 6 cut 276
- Room d 15 cut 276
- Room d 6 cut 276
- Thermistor dla 276
- Thermistor dlb 276
- Thermistor dlc 276
- Thermistor dld 276
- Appendix 266 277
- Heat pump 277
- Mxs40k2v1b 3mxs40k3v1b 277
- Mxs52e3v1b 3mxs52e4v1b 3amx52e3v1b 3amx52e4v1b 277
- Sibe121135_a piping diagrams 277
- Appendix 278
- Mxs68f2v1b 4mxs68f3v1b 278
- Mxs68g2v1b 3mxs68g3v1b 278
- Piping diagrams sibe121135_a 278
- Appendix 268 279
- Mxs80e2v3b 4mxs80e3v3b 279
- Mxs90e2v3b 5mxs90e3v3b 279
- Sibe121135_a piping diagrams 279
- Ftxg25 35jv1bw a ftxg50jv1bw a 280
- Ftxs20 25k2v1b ctxs15 35k2v1b ftxs35 42k2v1b ftxs25 35 42j2v1b atxs20 25 35 42g2v1b 280
- Indoor unit 280
- Wall mounted type 280
- Appendix 270 281
- Ftxs50k2v1b ftxs50j2v1b atxs50g2v1b ftxs60gv1b 281
- Ftxs71gv1b 281
- Sibe121135_a piping diagrams 281
- Appendix 282
- Floor standing type 282
- Fvxg25 35k2v1b fvxg50k2v1b 282
- Fvxs25 35fv1b fvxs50fv1b 282
- Piping diagrams sibe121135_a 282
- Appendix 272 283
- Duct connected type 283
- Fdxs25 35e7vmb fdxs50 60c7vmb 283
- Floor ceiling suspended dual type 283
- Flxs25 35bavmb flxs50 60bavmb 283
- Sibe121135_a piping diagrams 283
- Appendix 284
- Ceiling mounted cassette type 284
- Fcqg35 50 60fveb 284
- Ffq25 35 50 60b9v1b 284
- Piping diagrams sibe121135_a 284
- Appendix 274 285
- Ceiling suspended type 285
- Fhq35 50 60bwv1b 285
- Sibe121135_a piping diagrams 285
- Appendix 286
- Ceiling mounted built in type 286
- Fbq35 50 60c8veb 286
- Fdbq25b8v1 286
- Model fdbq25b8v1 286
- Piping diagrams sibe121135_a 286
- Cooling only 287
- Mks50e3v1b 287
- Mks58e3v1b 287
- Outdoor unit 287
- Wiring diagrams 287
- Appendix 288
- D055885 288
- Mks75f2v1b 288
- Mks90e2v3b 288
- Tw27596 1a 288
- Wiring diagrams sibe121135_a 288
- Appendix 278 289
- Heat pump 289
- Mxs40k2v1b 3mxs40k3v1b 3mxs52e3v1b 3mxs52e4v1b 3amx52e3v1b 3amx52e4v1b 289
- Mxs68g2v1b 3mxs68g3v1b 289
- Sibe121135_a wiring diagrams 289
- Appendix 290
- Mxs68f2v1b 4mxs68f3v1b 290
- Mxs80e2v3b 4mxs80e3v3b 290
- Wiring diagrams sibe121135_a 290
- Appendix 280 291
- Mxs90e2v3b 5mxs90e3v3b 291
- Sibe121135_a wiring diagrams 291
- Tw27586 1a 291
- Appendix 292
- Ftxg25 35 50jv1bw a 292
- Ftxs20 25k2v1b ctxs15 35k2v1b 292
- Indoor unit 292
- Wall mounted type 292
- Wiring diagrams sibe121135_a 292
- Appendix 282 293
- D058246g 293
- D064800d 293
- Ftxs35 42 50k2v1b ftxs25 35 42 50j2v1b atxs20 25 35 42 50g2v1b 293
- Ftxs60 71gv1b 293
- Pcb1 pcb3 293
- Sibe121135_a wiring diagrams 293
- Appendix 294
- Floor standing type 294
- Fvxg25 35 50k2v1b 294
- Fvxs25 35 50fv1b 294
- Wiring diagrams sibe121135_a 294
- Appendix 284 295
- Duct connected type 295
- Fdxs25 35e7vmb fdxs50 60c7vmb 295
- Floor ceiling suspended dual type 295
- Flxs25 35 50 60bavmb 295
- Sibe121135_a wiring diagrams 295
- Appendix 296
- Ceiling mounted cassette type 296
- D074344 296
- Fcqg35 50 60fveb 296
- Wiring diagrams sibe121135_a 296
- Appendix 286 297
- Ffq25 35 50 60b9v1b 297
- In case of using a remote controller connect it to the unit in accordance to the attached installation manual 2 x24a is connected when the wireless remote controller kit is being used 3 remote controller model varies according to the combination system see technical data and catalogs etc before connecting 4 ground the shield of the remote controller wire to the indoor unit in case of using shield wire 297
- Sibe121135_a wiring diagrams 297
- Tw26476 1 297
- Appendix 298
- Ceiling mounted built in type 298
- Ceiling suspended type 298
- D074574a 298
- Fdbq25b8v1 298
- Fhq35 50 60bwv1b 298
- Tw25856 1b 298
- Wiring diagrams sibe121135_a 298
- Appendix 288 299
- Common power supply note 4 299
- Fbq35 50c8veb 299
- Fbq60c8veb 299
- Field wiring 299
- Sibe121135_a wiring diagrams 299
- Tw31276 1a 299
- Tw31296 3 299
- Refer to the following booklets for removal procedure 300
- Removal procedure booklet no 300
- Revision history 301
- Cautions on product corrosion 302
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