Daikin Perfera RXM71R - Page 5

Table of Contents
Service manual
5
RXM20~71R + ARXM25~71R + FTXM20~71R + ATXM25~50R +
FVXM25~50A
Split New Perfera R32
ESIE20-11 – 2021.01
3.3.2 Repair procedures .......................................................................................................................................... 68
3.4 Damper motor ................................................................................................................................................................ 71
3.4.1 Checking procedures...................................................................................................................................... 71
3.4.2 Repair procedures .......................................................................................................................................... 73
3.5 Expansion valve............................................................................................................................................................... 75
3.5.1 Checking procedures...................................................................................................................................... 75
3.5.2 Repair procedures .......................................................................................................................................... 79
3.6 High pressure switch....................................................................................................................................................... 85
3.6.1 Checking procedures...................................................................................................................................... 85
3.6.2 Repair procedures .......................................................................................................................................... 87
3.7 Humidity sensor .............................................................................................................................................................. 88
3.7.1 Checking procedures...................................................................................................................................... 88
3.7.2 Repair procedures .......................................................................................................................................... 89
3.8 Indoor unit fan motor ..................................................................................................................................................... 91
3.8.1 Wall mounted indoor units ............................................................................................................................ 91
3.8.2 Floor standing indoor units ............................................................................................................................ 94
3.9 Indoor unit main PCB...................................................................................................................................................... 102
3.9.1 Checking procedures...................................................................................................................................... 102
3.9.2 Repair procedures .......................................................................................................................................... 106
3.10 Indoor unit power PCB.................................................................................................................................................... 110
3.10.1 Checking procedures...................................................................................................................................... 110
3.10.2 Repair procedures .......................................................................................................................................... 115
3.11 Intelligent eye sensor...................................................................................................................................................... 119
3.11.1 Checking procedures...................................................................................................................................... 119
3.11.2 Repair procedures .......................................................................................................................................... 122
3.12 Main PCB ......................................................................................................................................................................... 123
3.12.1 Class 20~35 units............................................................................................................................................ 123
3.12.2 Class 42~71 units............................................................................................................................................ 132
3.13 Outdoor unit fan motor .................................................................................................................................................. 140
3.13.1 Class 20~35 units............................................................................................................................................ 140
3.13.2 Class 42~71 units............................................................................................................................................ 145
3.14 Plate work ....................................................................................................................................................................... 151
3.14.1 Outdoor unit ................................................................................................................................................... 151
3.14.2 Indoor unit ...................................................................................................................................................... 156
3.15 Reactor ............................................................................................................................................................................ 166
3.15.1 Checking procedures...................................................................................................................................... 166
3.15.2 Repair procedures .......................................................................................................................................... 169
3.16 Streamer unit .................................................................................................................................................................. 169
3.16.1 Checking procedures...................................................................................................................................... 169
3.16.2 Repair procedures .......................................................................................................................................... 170
3.17 Swing flap motor............................................................................................................................................................. 172
3.17.1 Wall mounted indoor units - Class 20~42...................................................................................................... 172
3.17.2 Wall mounted indoor units - Class 50~71...................................................................................................... 174
3.17.3 Floor standing indoor units ............................................................................................................................ 178
3.18 Swing raster motor ......................................................................................................................................................... 181
3.18.1 Checking procedures...................................................................................................................................... 181
3.18.2 Repair procedures .......................................................................................................................................... 182
3.19 Thermistors ..................................................................................................................................................................... 189
3.19.1 Checking procedures...................................................................................................................................... 189
3.19.2 Repair procedures .......................................................................................................................................... 193
3.20 Wifi control PCB .............................................................................................................................................................. 197
3.20.1 Checking procedures...................................................................................................................................... 197
3.20.2 Repair procedures .......................................................................................................................................... 199
4 Third party components 202
4.1 Electrical circuit............................................................................................................................................................... 202
4.1.1 Checking procedures...................................................................................................................................... 202
4.1.2 Repair procedures .......................................................................................................................................... 203
4.2 Refrigerant circuit ........................................................................................................................................................... 204
4.2.1 Checking procedures...................................................................................................................................... 204
4.2.2 Repair procedures .......................................................................................................................................... 209
4.3 External factors ............................................................................................................................................................... 212
4.3.1 Checking procedures...................................................................................................................................... 212
5 Maintenance 214
5.1 To clean the outdoor unit heat exchanger..................................................................................................................... 214
5.2 To clean the indoor unit heat exchanger ....................................................................................................................... 214
5.3 To clean the indoor unit heat exchanger in extreme condition .................................................................................... 214
5.4 To clean the indoor unit and user interface................................................................................................................... 215
5.5 To clean the front panel ................................................................................................................................................. 215