Daikin FTXP20-71L Service Manual page 5

ATXP20~35 + FTXP20~71 + ARXP20~35 + RXP20~71
Split Comfora R32
ESIE18-01E - 2023.01
3.3.2 Repair procedures .......................................................................................................................................... 67
3.4 High pressure switch....................................................................................................................................................... 72
3.4.1 Checking procedures ...................................................................................................................................... 72
3.4.2 Repair procedures .......................................................................................................................................... 74
3.5 Indoor unit fan motor ..................................................................................................................................................... 75
3.5.1 Checking procedures ...................................................................................................................................... 75
3.5.2 Repair procedures .......................................................................................................................................... 77
3.6 Indoor unit main PCB ...................................................................................................................................................... 78
3.6.1 Checking procedures ...................................................................................................................................... 78
3.6.2 Repair procedures .......................................................................................................................................... 81
3.7 Main PCB ......................................................................................................................................................................... 84
3.7.1 Checking procedures ...................................................................................................................................... 84
3.7.2 Repair procedures .......................................................................................................................................... 96
3.8 Outdoor unit fan motor .................................................................................................................................................. 100
3.8.1 Class 20~35 units............................................................................................................................................ 100
3.8.2 Class 50~71 units............................................................................................................................................ 106
3.9 Plate work ....................................................................................................................................................................... 111
3.9.1 Outdoor unit ................................................................................................................................................... 111
3.9.2 Indoor unit ...................................................................................................................................................... 117
3.10 Reactor ............................................................................................................................................................................ 122
3.10.1 Checking procedures ...................................................................................................................................... 122
3.10.2 Repair procedures .......................................................................................................................................... 123
3.11 Swing flap motor............................................................................................................................................................. 124
3.11.1 Checking procedures ...................................................................................................................................... 124
3.11.2 Repair procedures .......................................................................................................................................... 125
3.12 Swing raster motor ......................................................................................................................................................... 126
3.12.1 Checking procedures ...................................................................................................................................... 126
3.12.2 Repair procedures .......................................................................................................................................... 127
3.13 Thermistors ..................................................................................................................................................................... 129
3.13.1 Refrigerant side thermistors .......................................................................................................................... 129
3.13.2 Other thermistors........................................................................................................................................... 136
3.14 Wifi control PCB .............................................................................................................................................................. 138
3.14.1 Checking procedures ...................................................................................................................................... 138
3.14.2 Repair procedures .......................................................................................................................................... 139
4 Third party components
4.1 Electrical circuit............................................................................................................................................................... 142
4.1.1 Checking procedures ...................................................................................................................................... 142
4.1.2 Repair procedures .......................................................................................................................................... 143
4.2 Refrigerant circuit ........................................................................................................................................................... 144
4.2.1 Checking procedures ...................................................................................................................................... 144
4.2.2 Repair procedures .......................................................................................................................................... 148
4.3 External factors ............................................................................................................................................................... 152
4.3.1 Checking procedures ...................................................................................................................................... 152
5 Maintenance
5.1 To clean the outdoor unit heat exchanger..................................................................................................................... 154
5.2 To clean the indoor unit heat exchanger ....................................................................................................................... 154
5.3 To clean the indoor unit heat exchanger in extreme condition .................................................................................... 155
5.4 To clean the air filters ..................................................................................................................................................... 155
6 Technical data
6.1 Detailed information setting mode ................................................................................................................................ 158
6.1.1 Detailed information setting mode: Indoor unit ........................................................................................... 158
6.1.2 Detailed information setting mode: Outdoor unit ........................................................................................ 158
6.1.3 Detailed information setting mode: Remote controller................................................................................ 158
6.2 Wiring diagram................................................................................................................................................................ 159
6.2.1 Wiring diagram: Indoor unit........................................................................................................................... 159
6.2.2 Wiring diagram: Outdoor unit........................................................................................................................ 165
6.3 Piping diagram ................................................................................................................................................................ 170
6.3.1 Piping diagram: Indoor unit............................................................................................................................ 170
6.3.2 Piping diagram: Outdoor unit......................................................................................................................... 174
6.4 Component overview...................................................................................................................................................... 180
6.4.1 Component overview: Indoor unit................................................................................................................. 180
6.4.2 Component overview: Outdoor unit.............................................................................................................. 182
6.5 Field information report ................................................................................................................................................. 183
6.6 Service tools .................................................................................................................................................................... 186
6.7 Field settings ................................................................................................................................................................... 187
6.7.1 Field settings: Indoor unit .............................................................................................................................. 187
6.7.2 Field settings: Outdoor unit ........................................................................................................................... 189
Table of contents
142
154
158
Service manual
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