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Daikin FTYN50FV1B [11/255] Outdoor unit
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Troubleshooting with LED Si10-417_C
10 Service Diagnosis
Wall Built-in Type
1.1.2 Service Monitor
The indoor unit has one green LED (LED A) on the
control PCB. When the microcomputer works in order,
the LED A blinks.
1.2 Outdoor Unit
Pair
The outdoor unit has one green LED (LED A) on the
main PCB. When the microcomputer works in order, the
LED A blinks.
Multi
Ex: 4-room multi outdoor unit
There are a green LED (LED A) and red LEDs on the
outdoor unit PCB. The LED A indicates microcomputer
operation condition. In normal condition, the LED A is
blinking and the other LEDs are OFF.
Even after the error is canceled and the unit operates in
normal condition, the LED indication remains.
Operation lamp (green)
Service monitor PCB
LED A
LED 1
LED 2
LED 3
LED 4
Содержание
- Error codes and description 1 2
- List of applicable models 5 2
- Service check function 2 2
- Service diagnosis split multi 2
- Table of contents 2
- Troubleshooting by error code 4 2
- Troubleshooting by symptoms 1 2
- Troubleshooting with led 2
- Check 27 4
- Indoor unit 6
- Operation lamp 6
- Troubleshooting with led 6
- Wall mounted type 6
- Floor standing type 9
- Operation lamp green 9
- Ceiling mounted cassette type 10
- Duct connected type 10
- Floor ceiling suspended dual type 10
- Operation lamp green 10
- Outdoor unit 11
- Service monitor 11
- Wall built in type 11
- Air conditioner does not run 12
- Battery shortage of remote controller 12
- Improper connection of wire 12
- Improper power supply voltage 12
- Incorrect combination of indoor unit and outdoor unit 12
- Invalid address setting 12
- Power supply is off 12
- Protection device works dirty air filter refrigerant shortage overfilling mixed air etc 12
- Supposed causes 12
- Transmission error between indoor unit and outdoor unit defective outdoor unit pcb 12
- Trouble shooting 12
- Troubleshooting by symptoms 12
- From on the next page 13
- Go to on the next page 13
- Match the compatible models 13
- Part no 999146t 13
- Service diagnosis 13
- Troubleshooting by symptoms si10 417_c 13
- Service diagnosis 13 14
- Si10 417_c troubleshooting by symptoms 14
- Air conditioner runs but does not cool heat the room 15
- Check no 1 refer to p 27 15
- Clogged air filter 15
- Defective field piping squeezed etc 15
- Improper setting for temperature 15
- Incorrect combination of indoor unit and outdoor unit 15
- Insufficient power 15
- Refrigerant piping is too long 15
- Service diagnosis 15
- Supposed causes 15
- Trouble shooting 15
- Troubleshooting by symptoms si10 417_c 15
- Service diagnosis 15 16
- Si10 417_c troubleshooting by symptoms 16
- Warning 16
- When the air conditioner does not cool or heat the room refrigerant leakage is considered to be one of the reasons make sure that there is no refrigerant leakage or breaks due to over tightened flare part though the refrigerant is harmless but it can generate toxic gases when it leaks into room and contacts flames such as fan and other heaters stoves and ranges in case of leakage ventilate the room immediately 16
- When operation starts safety breaker works 17
- Check no 0 refer to p 50 18
- Service diagnosis 17 18
- Si10 417_c troubleshooting by symptoms 18
- Trouble shooting 18
- Service diagnosis 19
- Troubleshooting by symptoms si10 417_c 19
- Air conditioner makes big noise and vibration 20
- Deformation of the unit 20
- Improper quantity of refrigerant 20
- Insufficient vibration prevention measures 20
- Mounting wall is too thin 20
- Refrigerant piping is too short 20
- Service diagnosis 19 20
- Si10 417_c troubleshooting by symptoms 20
- Supposed causes 20
- Trouble shooting 20
- Air is not humidified enough for humidifying type unit 21
- Air is short circuited at outdoor unit 21
- Ceiling is very high 21
- Clogged air supply filter 21
- Hose length is not set 21
- Improper setting for hose length 21
- Indoor ventilation is made too often 21
- Insufficient heat insulation of duct 21
- Service diagnosis 21
- Supposed causes 21
- Trouble shooting 21
- Troubleshooting by symptoms si10 417_c 21
- Explain to the user 22
- Service diagnosis 21 22
- Set the air outlet at the height of 1 m confirm the humidification performance 22
- Si10 417_c troubleshooting by symptoms 22
- Check method 1 23
- Service check function 23
- Timer cancel button 23
- Arc433 series 24
- Arc445 series 24
- Timer cancel button 24
- Arc447a4 25
- Arc452 series 25
- Timer cancel button 25
- Arc455 series 26
- Arc466 series 26
- Timer cancel button 26
- Arc470 series 27
- Timer cancel button 27
- Order of error codes 28
- Pattern 1 28
- Pattern 2 30
- Pattern 3 31
- Pattern 4 32
- Pattern 5 33
- Check method 2 34
- Pattern 1 34
- Pattern 2 39
- Pattern 3 42
- Arc447a1 a2 a3 45
- Indoor unit 46
- List of applicable models 46
- Wall mounted type 46
- Floor standing type 61
- Floor ceiling suspended dual type 62
- Duct connected type 63
- Ceiling mounted cassette type 66
- Wall built in type 66
- Outdoor unit 67
- Error codes and description 82
- Indoor unit 82
- Outdoor unit 85
- Defective indoor unit pcb 95
- Disconnection of connector 95
- Indoor unit pcb abnormality 95
- Malfunction decision conditions 95
- Method of malfunction detection 95
- Reduction of power supply voltage 95
- Remote controller display 95
- Supposed causes 95
- The system cannot set the internal settings 95
- The system checks if the circuit works properly within the microcomputer of the indoor unit 95
- Trouble shooting 95
- Troubleshooting by error code 95
- Wrong models interconnected 95
- Check the power supply voltage 96
- Completed 96
- Correct the power supply 96
- Error repeats yes 96
- Note check the following connector 96
- R15514 96
- Replace the indoor unit pcb 96
- Service diagnosis 95 96
- Si10 417_c troubleshooting by error code 96
- Start operation 96
- Voltage as rated no 96
- Drain water level or related abnormality 97
- Go to on the next page 98
- Service diagnosis 97 98
- Si10 417_c troubleshooting by error code 98
- Trouble shooting 98
- Service diagnosis 99
- Troubleshooting by error code si10 417_c 99
- Flowchart 1 100
- Freeze up protection control or heating peak cut control 100
- Check no 1 refer to p 27 101
- Clean the air filter 101
- Clean the indoor heat exchanger 101
- Provide sufficient air passage 101
- Replace the indoor unit pcb 101
- Replace the thermistor 101
- Service diagnosis 101
- Trouble shooting 101
- Troubleshooting by error code si10 417_c 101
- Flowchart 2 102
- Check no 1 refer to p 27 103
- Clean the air filter 103
- Clean the indoor heat exchanger 103
- Provide sufficient air passage 103
- Replace the indoor heat exchanger replacement of the solenoid valve only is impossible 103
- Replace the indoor unit pcb 103
- Replace the thermistor 103
- Service diagnosis 103
- Trouble shooting 103
- Troubleshooting by error code si10 417_c 103
- Fan motor or related abnormality 104
- Flowchart 1 104
- Replace the indoor fan motor 105
- Replace the indoor fan motor and the indoor unit pcb 105
- Replace the indoor unit pcb 105
- Service diagnosis 105
- Troubleshooting by error code si10 417_c 105
- Flowchart 2 106
- Check no 3 refer to p 31 107
- Service diagnosis 107
- Trouble shooting 107
- Troubleshooting by error code si10 417_c 107
- Flowchart 3 108
- Check no 4 refer to p 32 109
- Correct the power supply 109
- Go to on the next page 109
- Replace the capacitor replace the indoor unit pcb 109
- Replace the fan motor 109
- Replace the indoor unit pcb 109
- Service diagnosis 109
- Trouble shooting 109
- Troubleshooting by error code si10 417_c 109
- Replace the fan motor 110
- Replace the fan motor or indoor unit pcb 110
- Replace the indoor unit pcb 110
- Service diagnosis 109 110
- Si10 417_c troubleshooting by error code 110
- Radiant panel temperature rise indoor electronic expansion valve motor operated valve abno 111
- Radiant panel temperature rise indoor electronic expansion valve motor operated valve abnormality freeze up protection control 111
- Check no 1 refer to p 27 112
- Check no 6 refer to p 33 112
- Clogged air filter of the indoor unit 112
- Defective indoor electronic expansion valve or coil 112
- Defective indoor heat exchanger thermistor 112
- Defective radiant panel thermistor s 112
- Defective room temperature thermistor 112
- Dust accumulation on the indoor heat exchanger 112
- Freeze up protection control during cooling operation the operation stops when the temperature detected by the radiant panel thermistor φ 4 has dropped 112
- Provide sufficient air passage 112
- Replace the indoor electronic expansion valve coil 112
- Replace the thermistor radiant panel thermistors indoor heat exchanger thermistor room temperature thermistor 112
- Service diagnosis 111 112
- Short circuited air 112
- Si10 417_c troubleshooting by error code 112
- Start operation within the specified range of the outdoor temperature 112
- Supposed causes 112
- Trouble shooting 112
- When the outdoor temperature is below the lower limit for cooling operation 10 c the freeze up protection control is activated and the cooling operation stops 112
- Clean the air filter 113
- Clean the indoor heat exchanger 113
- Completed 113
- Replace the indoor heat exchanger 113
- Service diagnosis 113
- Troubleshooting by error code si10 417_c 113
- Streamer unit abnormality 114
- Clean the streamer unit 115
- Connect the connector again for ensuring the connection 115
- Correct the connection 115
- Install the streamer unit surely 115
- Note 1 be careful not to break the electrode while cleaning 2 since the electrode part is electrified in high voltage be sure to pull out the power supply plug or turn the breaker off while cleaning the electrode part touching in electrifying results in electrical shock 115
- Replace the harness 115
- Replace the limit switch 115
- Replace the streamer unit pcb 115
- Service diagnosis 115
- Trouble shooting 115
- Troubleshooting by error code si10 417_c 115
- Cleaning unit system abnormality 116
- Go to on the next page 117
- Service diagnosis 117
- Trouble shooting 117
- Troubleshooting by error code si10 417_c 117
- Thermistor or related abnormality indoor unit 119
- Shutter drive motor shutter limit switch abnormality 120
- Check the shutter for deformation or its sealing material 121
- Check the shutter s sealing material 121
- Service diagnosis 121
- Troubleshooting by error code si10 417_c 121
- Front panel open close fault 122
- 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 123
- Service diagnosis 123
- Troubleshooting by error code si10 417_c 123
- Grille locking abnormality panel up and down storage locking abnormality 124
- Service diagnosis 125
- Trouble shooting 125
- Troubleshooting by error code si10 417_c 125
- Go to on p 29 126
- Service diagnosis 125 126
- Si10 417_c troubleshooting by error code 126
- Service diagnosis 127
- Troubleshooting by error code si10 417_c 127
- Service diagnosis 127 128
- Si10 417_c troubleshooting by error code 128
- Go to on p 24 129
- Go to on p 29 129
- Lower limit position when the high ceiling setting is off 1 m from the ceiling when the high ceiling setting is on 1 m from the ceiling 129
- Service diagnosis 129
- Stop the operation press the unlock button on the panel remote controller for 2 seconds to release the lock and then press the down button to lower the panel 129
- Troubleshooting by error code si10 417_c 129
- Service diagnosis 129 130
- Si10 417_c troubleshooting by error code 130
- Humidity sensor abnormality 131
- Flowchart 1 132
- Lights out of microcomputer status lamp 132
- Check and correct the power supply 133
- Correct the connection 133
- Provide proper grounding 133
- Replace the fuse 133
- Replace the indoor unit pcb 133
- Replace the varistor 133
- Service diagnosis 133
- The malfunction may be caused by an external factor rather than defective parts locate the cause of the noise etc and correct the situation 133
- Trouble shooting 133
- Troubleshooting by error code si10 417_c 133
- Flowchart 2 134
- Service diagnosis 135
- Troubleshooting by error code si10 417_c 135
- 1 measure the voltage between and beside the diode bridge db1 136
- Diode bridge db1 136
- Transformer t1 136
- Flowchart 3 137
- Malfunction decision conditions 137
- Method of malfunction detection 137
- No display 137
- Outdoor unit pcb is not power supplied 137
- Power supply failure due to noise 137
- Remote controller display 137
- Service diagnosis 137
- Supposed causes 137
- Trouble shooting 137
- Troubleshooting by error code si10 417_c 137
- When a microcomputer fault is detected led a or led 5 turns off 137
- Remove noises 138
- Remove noises from the power supply 138
- Replace the outdoor unit pcb 138
- Service diagnosis 137 138
- Si10 417_c troubleshooting by error code 138
- Flowchart 4 139
- Malfunction decision conditions 139
- Method of malfunction detection 139
- No display 139
- Outdoor unit pcb is not power supplied 139
- Power supply failure due to noise 139
- Remote controller display 139
- Service diagnosis 139
- Supposed causes 139
- Trouble shooting 139
- Troubleshooting by error code si10 417_c 139
- When a microcomputer fault is detected led a turns off 139
- Flowchart 1 140
- Refrigerant shortage 140
- Check no 1 refer to p 27 142
- Check no 2 refer to p 35 142
- Completed 142
- Ct is in trouble 142
- Discharge pipe thermistor 142
- Go to on the next page 142
- Indoor or outdoor heat exchanger thermistor 142
- Open the stop valve 142
- Outdoor temperature thermistor 142
- Repair the pipe flare or replace the union 142
- Replace the outdoor electronic expansion valve 142
- Replace the thermistors in position 142
- Room temperature thermistor 142
- Service diagnosis 141 142
- Si10 417_c troubleshooting by error code 142
- Trouble shooting 142
- Service diagnosis 143
- Troubleshooting by error code si10 417_c 143
- Flowchart 2 144
- Check no 1 refer to p 27 146
- Check no 2 refer to p 35 146
- Completed 146
- Discharge pipe thermistor 146
- Go to on the next page 146
- Indoor or outdoor heat exchanger thermistor 146
- Open the stop valve 146
- Outdoor temperature thermistor 146
- Repair the pipe flare or replace the union 146
- Replace the outdoor electronic expansion valve 146
- Replace the thermistors in position 146
- Room temperature thermistor 146
- Service diagnosis 145 146
- Si10 417_c troubleshooting by error code 146
- Trouble shooting 146
- Service diagnosis 147
- Troubleshooting by error code si10 417_c 147
- Low voltage detection or over voltage detection 148
- Check for such factors for a long term 149
- Correct the power supply 149
- Defective dc voltage detection circuit 149
- Defective indoor unit pcb 149
- Defective over voltage detection circuit 149
- Defective pam control part 149
- Disconnection of compressor harness 149
- Go to below 149
- Momentary fall of voltage 149
- Momentary power failure 149
- Power supply voltage is not as specified 149
- Reconnect the harness 149
- Replace the indoor unit pcb 149
- Replace the outdoor unit pcb 149
- Service diagnosis 149
- Supposed causes 149
- Trouble shooting 149
- Troubleshooting by error code si10 417_c 149
- Try to restart a few times 149
- Low voltage detection 150
- Flowchart 1 151
- Signal transmission error between indoor unit and outdoor unit 151
- Before you check the led a cancel the standby electricity saving function by operating fan operation with the remote controller wait at least for 7 sec after turning on the power 152
- Check no 1 refer to p 35 152
- Correct the indoor unit outdoor unit connection wires 152
- Correct the power supply 152
- Diagnose the outdoor unit pcb 152
- Locate the cause of the disturbance of the power supply waveform and correct it 152
- Replace the connection wires between the indoor unit and outdoor unit 152
- Replace the indoor unit pcb 152
- Service diagnosis 151 152
- Si10 417_c troubleshooting by error code 152
- Trouble shooting 152
- Flowchart 2 153
- Replace the indoor unit pcb control pcb 154
- Replace the outdoor unit pcb 154
- Service diagnosis 153 154
- Si10 417_c troubleshooting by error code 154
- Trouble shooting 154
- Outdoor unit pcb abnormality or communication circuit abnormality 155
- Check no 1 refer to p 35 156
- Go to on p 57 156
- R15538 156
- Rectify the power supply 156
- Replace the fuse 156
- Replace the varistor 156
- Service diagnosis 155 156
- Si10 417_c troubleshooting by error code 156
- Trouble shooting 156
- Go to on the next page 157
- Investigate the cause of disturbance and take remedial action 157
- Reconnect the relay wire 157
- Replace the indoor unit pcb 157
- Replace the outdoor unit pcb 157
- Service diagnosis 157
- Troubleshooting by error code si10 417_c 157
- Service diagnosis 157 158
- Si10 417_c troubleshooting by error code 158
- Flowchart 1 159
- Signal transmission error on outdoor unit pcb 159
- Flowchart 2 160
- Service diagnosis 161
- Trouble shooting 161
- Troubleshooting by error code si10 417_c 161
- Incomplete setting for hose length 162
- Unspecified voltage between indoor unit and outdoor unit 165
- Unspecified voltage between indoor unit and outdoor unit anti icing function in other rooms 166
- Anti icing function 167
- Check no 1 refer to p 27 168
- Check no 2 refer to p 35 168
- Service diagnosis 167 168
- Si10 417_c troubleshooting by error code 168
- Trouble shooting 168
- Flowchart 1 169
- Outdoor unit pcb abnormality 169
- Service diagnosis 169 170
- Si10 417_c troubleshooting by error code 170
- Trouble shooting 170
- Flowchart 2 171
- Ol activation compressor overload 172
- Check no 1 refer to p 27 173
- Check no 2 refer to p 35 173
- Check no 3 refer to p 38 173
- Check no 4 refer to p 40 173
- Discharge pip 173
- Insert the thermistor in position 173
- Refer to the refrigerant line check procedure 173
- Refrigerant shortage 173
- Replace the discharge pipe thermistor 173
- Replace the four way valve or the coil replace the outdoor unit pcb 173
- Replace the outdoor electronic expansion valve or the coil 173
- Replace the outdoor unit pcb 173
- Service diagnosis 173
- Stop valve 173
- Trouble shooting 173
- Troubleshooting by error code si10 417_c 173
- Water mixed 173
- Compressor lock 174
- Check no 5 refer to p 40 175
- Service diagnosis 175
- Trouble shooting 175
- Troubleshooting by error code si10 417_c 175
- Dc fan lock 176
- Check no 6 refer to p 44 177
- Remove the foreign matters 177
- Replace the outdoor fan motor 177
- Replace the outdoor unit pcb 177
- Service diagnosis 177
- Trouble shooting 177
- Troubleshooting by error code si10 417_c 177
- Turn off the power and reconnect the connector 177
- Input overcurrent detection 178
- Check no 5 refer to p 40 179
- Check no 7 refer to p 46 179
- Check no 8 refer to p 47 179
- Service diagnosis 179
- Trouble shooting 179
- Troubleshooting by error code si10 417_c 179
- Flowchart 1 180
- Four way valve abnormality 180
- Check no 1 refer to p 27 181
- Check no 3 refer to p 38 181
- Check no 4 refer to p 40 181
- Correct the four way valve coil 181
- Reconnect the harness 181
- Reconnect the thermistors in position 181
- Refer to the refrigerant line check procedure 181
- Refrigerant shortage 181
- Replace the defective thermistor 181
- Replace the four way valve coil 181
- Replace the four way valve defective or dust clogged 181
- Replace the outdoor unit pcb 181
- Service diagnosis 181
- Stop valve 181
- Trouble shooting 181
- Troubleshooting by error code si10 417_c 181
- Water mixed 181
- Flowchart 2 182
- Check no 1 refer to p 27 183
- Check no 3 refer to p 38 183
- Check no 4 refer to p 40 183
- Correct the four way valve coil 183
- Reconnect the harness 183
- Reconnect the thermistors in position 183
- Refer to the refrigerant line check procedure 183
- Replace a defective thermistor 183
- Replace the four way valve coil 183
- Replace the four way valve defective or dust clogged 183
- Replace the outdoor unit pcb 183
- Service diagnosis 183
- Stop valve 183
- Trouble shooting 183
- Troubleshooting by error code si10 417_c 183
- Water mixed 183
- Discharge pipe temperature control 184
- Check no 1 refer to p 27 185
- Check no 2 refer to p 35 185
- Check no 4 refer to p 40 185
- Service diagnosis 185
- Trouble shooting 185
- Troubleshooting by error code si10 417_c 185
- Flowchart 1 186
- High pressure control in cooling 186
- Flowchart 2 187
- Change the installation location or direction clean the outdoor heat exchanger 188
- Check no 1 refer to p 27 188
- Check no 2 refer to p 35 188
- Check no 7 refer to p 46 188
- Check no 8 refer to p 47 188
- Check no 9 refer to p 48 188
- Check the installation space 188
- Replace the fan motor reconnect the connector or fan motor lead wires 188
- Replace the outdoor electronic expansion valve or the coil replace the outdoor unit pcb 188
- Replace the outdoor heat exchanger thermistor 188
- Replace the outdoor unit pcb 188
- Replace the stop valve 188
- Service diagnosis 187 188
- Si10 417_c troubleshooting by error code 188
- Trouble shooting 188
- Flowchart 3 189
- Change the installation location or direction clean the outdoor heat exchanger 190
- Check no 1 refer to p 27 190
- Check no 2 refer to p 35 190
- Check no 23 190
- Check no 3 refer to p 51 190
- Check no 7 refer to p 46 190
- Check no 8 refer to p 47 190
- Check no 9 refer to p 48 190
- Check the installation space 190
- Replace the fan motor reconnect the connector or fan motor lead wires 190
- Replace the outdoor electronic expansion valve or the coil replace the outdoor unit pcb 190
- Replace the outdoor heat exchanger thermistor 190
- Replace the stop valve 190
- Service diagnosis 189 190
- Si10 417_c troubleshooting by error code 190
- Trouble shooting 190
- Compressor system sensor abnormality 191
- Flowchart 1 191
- Flowchart 2 192
- Service diagnosis 193
- Trouble shooting 193
- Troubleshooting by error code si10 417_c 193
- Damper abnormality 194
- Flowchart 1 195
- Position sensor abnormality 195
- Check no 0 refer to p 50 196
- Check no 5 refer to p 40 196
- Check no 8 refer to p 47 196
- Service diagnosis 195 196
- Si10 417_c troubleshooting by error code 196
- Trouble shooting 196
- Service diagnosis 197
- Troubleshooting by error code si10 417_c 197
- Flowchart 2 198
- Check no 5 refer to p 40 199
- Check no 8 refer to p 47 199
- Service diagnosis 199
- Trouble shooting 199
- Troubleshooting by error code si10 417_c 199
- Dc voltage current sensor abnormality 200
- Ct or related abnormality 201
- Check no 1 refer to p 50 202
- Check no 5 refer to p 40 202
- Check the supply voltage 202
- Go to on the next page 202
- Replace the outdoor unit pcb 202
- Service diagnosis 201 202
- Si10 417_c troubleshooting by error code 202
- Trouble shooting 202
- Service diagnosis 203
- Troubleshooting by error code si10 417_c 203
- Flowchart 1 204
- Thermistor or related abnormality outdoor unit 204
- Check no 1 refer to p 27 205
- H9 outdoor temperature thermistor j3 discharge pipe thermistor j6 outdoor heat exchanger thermistor p4 radiation fin thermistor 205
- Replace the indoor heat exchanger thermistor 205
- Replace the outdoor unit pcb 205
- Service diagnosis 205
- Trouble shooting 205
- Troubleshooting by error code si10 417_c 205
- Flowchart 2 207
- Check no 1 refer to p 27 208
- H9 outdoor temperature thermistor j3 discharge pipe thermistor j6 outdoor heat exchanger thermistor j8 liquid pipe thermistor j9 gas pipe thermistor p4 radiation fin thermistor 208
- Replace the following thermistor indoor heat exchanger thermistor 208
- Replace the outdoor unit pcb 208
- Service diagnosis 207 208
- Si10 417_c troubleshooting by error code 208
- Trouble shooting 208
- Electrical box temperature rise 210
- Flowchart 1 210
- Check no 01 check the thermistor resistance value 211
- Check no 1 refer to p 27 211
- Check no 7 refer to p 46 211
- Check no 9 refer to p 48 211
- Check the radiation fin temperature 211
- From below 211
- Go to above 211
- Go to below 211
- Replace the outdoor unit pcb 211
- Replace the radiation fin thermistor 211
- Service diagnosis 211
- Trouble shooting 211
- Troubleshooting by error code si10 417_c 211
- Flowchart 2 212
- Check no 7 refer to p 46 213
- Check no 9 refer to p 48 213
- Clean up the radiation fin 213
- From below 213
- Go to above 213
- Go to below 213
- Replace the fan motor correct the connectors and fan motor lead wire replace the outdoor unit pcb 213
- Replace the outdoor unit pcb 213
- Service diagnosis 213
- Trouble shooting 213
- Troubleshooting by error code si10 417_c 213
- Flowchart 1 214
- Radiation fin temperature rise 214
- Check if the silicon grease applied properly on the radiation fin if not apply it silicon grease part no 1172698 215
- Check no 1 refer to p 27 215
- Check no 7 refer to p 46 215
- Check no 9 refer to p 48 215
- Check the power transistor and the radiation fin for looseness if they are found to be fit tightly replace the outdoor unit pcb or the power transistor 215
- Clean up the radiation fin 215
- From below 215
- Go to above 215
- Go to below 215
- Radiation fin thermistor 215
- Replace the fan motor correct the connectors and fan motor lead wire replace the outdoor unit pcb 215
- Replace the radiation fin thermistor 215
- Service diagnosis 215
- Trouble shooting 215
- Troubleshooting by error code si10 417_c 215
- Flowchart 2 216
- Check if the silicon grease applied properly on the radiation fin if not apply it silicon grease part no 1172698 217
- Check no 7 refer to p 46 217
- Check no 9 refer to p 48 217
- Clean up the radiation fin 217
- From below 217
- Go to above 217
- Go to below 217
- Replace the fan motor correct the connectors and fan motor leads replace the outdoor unit pcb 217
- Replace the outdoor unit pcb 217
- Service diagnosis 217
- Trouble shooting 217
- Troubleshooting by error code si10 417_c 217
- Output overcurrent detection 218
- Check no 2 refer to p 51 219
- Check no 5 refer to p 40 219
- Check no 7 refer to p 46 219
- Check no 8 refer to p 47 219
- Correct the power supply or replace the outdoor unit pcb 219
- Fully open the stop valve 219
- Go to on the next page 219
- Replace the outdoor unit pcb 219
- Service diagnosis 219
- Trouble shooting 219
- Troubleshooting by error code si10 417_c 219
- Check the connectors and other components 220
- Correct the power supply 220
- Keep on using 220
- Replace the compressor 220
- Service diagnosis 219 220
- Si10 417_c troubleshooting by error code 220
- Fan motor system abnormality fan lock 221
- Check no 6 refer to p 44 222
- Completed 222
- From below 222
- Go to below 222
- Reconnect the connector properly 222
- Replace the outdoor fan motor humidifying fan motor outdoor unit pcb go to above 222
- Replace the outdoor unit pcb 222
- Service diagnosis 221 222
- Si10 417_c troubleshooting by error code 222
- Trouble shooting 222
- Heater wire abnormality 223
- Check no 1 refer to p 27 224
- Modify the supply voltage 224
- Replace the heater assy 224
- Service diagnosis 223 224
- Si10 417_c troubleshooting by error code 224
- Trouble shooting 224
- Humidifying thermistor abnormality humidifying heater temperature abnormality 225
- At humid heating operation instead of trial operation the on timing of the hygroscopic fan may delay 20 min at maximum 226
- Check no 1 refer to p 27 226
- Check no 9 refer to p 48 226
- Replace the heater assy 226
- Replace the humidifying rotor motor 226
- Replace the thermistor 226
- Service diagnosis 225 226
- Si10 417_c troubleshooting by error code 226
- Trouble shooting 226
- Refer to p9 troubleshooting 227
- Remove the foreign matter 227
- Replace the outdoor unit pcb 227
- Service diagnosis 227
- Troubleshooting by error code si10 417_c 227
- 15 0 15 30 45 c 228
- Check no 1 disconnect the connectors of the thermistors from the pcb and measure the resistance of each thermistor using a tester the relationship between normal temperature and resistance is shown in the table and the graphs below 228
- K ω 75 228
- Thermistor resistance check 228
- Type 1 50 228
- Type 2 228
- Type 3 k ω 228
- Check no 2 231
- Check the connection of connector 2 check motor power supply voltage output pins 4 7 and 4 8 3 check motor control voltage pins 4 3 4 check rotation command voltage output pins 4 2 5 check rotation pulse input pins 4 1 231
- Fan motor connector check 231
- Check no 3 232
- Fan motor connector check 232
- Fan motor wire breakdown short circuit check 1 check the connector for connection 2 turn the power off 3 check if each resistance at the phases u v and v w is 90 ω 100 ω between the pins 12 9 and between 9 6 232
- Motor control voltage check 1 check the connector for connection 2 check the motor control voltage is generated between the pins 2 3 232
- 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 3 232
- Hall ic check 233
- Check no 6 234
- Indoor electronic expansion valve coil check 234
- Check no 7 235
- Check no 8 235
- Check that the connection is proper 2 change the ambient conditions and check that the input level changes accordingly change the humidity temperature airflow rate to do this merely breathe upon 235
- Humidity sensor check 235
- Limit switch continuity check 235
- Remove the front grille the limit switch is located at the left side of the drain pan assembly check the continuity of the switch connection 235
- The shutter can be opened and closed with hand keep the shutter open and closed all the way for each continuity check steps 235
- Check no 1 236
- Check no 2 236
- Outdoor electronic expansion valve check 236
- Power supply waveform check 236
- Check the liquid pipe temperature of no operation unit 238
- Check the low pressure 238
- If the system keeps operating with a defective outdoor electronic expansion valve the following problem may occur 238
- R11266 238
- R11267 238
- Replace the ev of the room 238
- Service diagnosis 237 238
- Si10 417_c check 238
- The ev is not defective 238
- Be sure to wait for 30 sec or more after turning off the power supply 239
- Check no 3 239
- Check si10 417_c 239
- Four way valve performance check 239
- Service diagnosis 239
- Ac motor 240
- Four way valve coil cooling dry no continuity heating continuity 240
- Replace the four way valve 240
- Replace the four way valve coil 240
- Replace the outdoor unit pcb 240
- Service diagnosis 239 240
- Si10 417_c check 240
- Check no 4 241
- Check no 5 241
- Inverter checker check 241
- Inverter unit refrigerant system check 241
- Check no 6 245
- For 13 pin connector of outdoor fan motor 1 check that the voltage between the pins 10 11 is 15 vdc 2 check if the hall ic generates the rotation pulse 0 15 vdc 4 times between the pins 10 12 10 13 when the fan motor is manually rotated once 245
- For 7 pin connector of outdoor fan motor or humidifier fan motor outdoor fan motor s70 humidifier fan motor s72 245
- Make sure that the voltage of 320 30 v is applied 1 set operation off and power off disconnect the connector s70 or s72 2 check that the voltage between the pins 4 7 is 320 vdc 3 check that the control voltage between the pins 3 4 is 15 vdc 4 check that the rotation command voltage between the pins 2 4 is 0 15 vdc 5 keep operation off and power off connect the connector s70 or s72 245
- Rotation pulse check on the outdoor unit pcb 245
- Change the installation location or direction 247
- Check no 7 247
- Check si10 417_c 247
- Check the outdoor temperature the outdoor temperature should be 43 46 c or lower 247
- Clean the outdoor heat exchanger 247
- Installation condition check 247
- Service diagnosis 247
- Check no 8 248
- Discharge pressure check 248
- Service diagnosis 247 248
- Si10 417_c check 248
- Check no 9 249
- Check si10 417_c 249
- Dc motor 249
- Outdoor fan system check 249
- Service diagnosis 249
- Ac motor 250
- Service diagnosis 249 250
- Si10 417_c check 250
- Before the measurement be sure to check the main circuit for short circuit and set the multimeter to dc voltage range 251
- Capacitor voltage check 251
- Check no 0 251
- Check no 1 251
- If the resistance is or less than 1 k ω short circuit occurs on the main circuit 251
- Main circuit short check 251
- Measure the resistance between the pins of the db1 as below 251
- Note check to make sure that the voltage between and of the diode bridge db1 is approx 0 v before checking 251
- Reference 251
- Since the capacitor and are connected to the power transistor and the capacitor voltage can be measured at the power transistor and terminals 251
- With the circuit breaker still on measure the voltage at the power transistor and terminals be careful never to touch any live parts 251
- Check no 2 252
- Check no 3 252
- Dehumidifying solenoid valve check 252
- Disconnect the compressor harness connector from the outdoor unit pcb to disengage the connector press the protrusion on the connector 252
- Faulty criterion in dehumidification test operation mode pcb is identified defective when the dehumidifying solenoid valves do not turn on within 2 seconds after compressor start up when dehumidifying solenoid valves are not used the operation mode is similar to cooling operation 252
- 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 252
- Note check to make sure that the voltage between and of the power module is approx 0 v before checking 252
- Power module check 252
- Check si10 417_c 253
- Service diagnosis 253
- Revision history 254
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