Daikin Emura RXJ20A5V1B Service Manual page 5

RXJ20~50A + FTXJ-A(W)(S)(B)
Split Emura 3 R32
ESIE22-04B - 2022.08
4 Components
4.1 4-way valve...................................................................................................................................................................... 53
4.1.1 Checking procedures ...................................................................................................................................... 53
4.1.2 Repair procedures .......................................................................................................................................... 57
4.2 Compressor ..................................................................................................................................................................... 62
4.2.1 Checking procedures ...................................................................................................................................... 62
4.2.2 Repair procedures .......................................................................................................................................... 68
4.3 Compressor thermal protector....................................................................................................................................... 77
4.3.1 Checking procedures ...................................................................................................................................... 77
4.3.2 Repair procedures .......................................................................................................................................... 79
4.4 Expansion valve............................................................................................................................................................... 82
4.4.1 Checking procedures ...................................................................................................................................... 82
4.4.2 Repair procedures .......................................................................................................................................... 86
4.5 Front panel motor........................................................................................................................................................... 90
4.5.1 Checking procedures ...................................................................................................................................... 90
4.5.2 Repair procedures .......................................................................................................................................... 92
4.6 High pressure switch....................................................................................................................................................... 95
4.6.1 Checking procedures ...................................................................................................................................... 95
4.6.2 Repair procedures .......................................................................................................................................... 96
4.7 Humidity sensor .............................................................................................................................................................. 98
4.7.1 Checking procedures ...................................................................................................................................... 98
4.7.2 Repair procedures .......................................................................................................................................... 99
4.8 Indoor unit fan motor ..................................................................................................................................................... 101
4.8.1 Checking procedures ...................................................................................................................................... 101
4.8.2 Repair procedures .......................................................................................................................................... 102
4.9 Indoor unit main PCB ...................................................................................................................................................... 103
4.9.1 Checking procedures ...................................................................................................................................... 103
4.9.2 Repair procedures .......................................................................................................................................... 106
4.10 Indoor unit power PCB.................................................................................................................................................... 108
4.10.1 Checking procedures ...................................................................................................................................... 108
4.10.2 Repair procedures .......................................................................................................................................... 111
4.11 Intelligent thermal sensor............................................................................................................................................... 114
4.11.1 Checking procedures ...................................................................................................................................... 114
4.11.2 Repair procedures .......................................................................................................................................... 115
4.12 Main PCB ......................................................................................................................................................................... 117
4.12.1 Class 20~35 units............................................................................................................................................ 117
4.12.2 Class 42+50 units............................................................................................................................................ 126
4.13 Outdoor unit fan motor .................................................................................................................................................. 134
4.13.1 Class 20~35 units............................................................................................................................................ 134
4.13.2 Class 42+50 units............................................................................................................................................ 138
4.14 Plate work ....................................................................................................................................................................... 144
4.14.1 Outdoor unit ................................................................................................................................................... 144
4.14.2 Indoor unit ...................................................................................................................................................... 149
4.15 Reactor ............................................................................................................................................................................ 156
4.15.1 Checking procedures ...................................................................................................................................... 156
4.15.2 Repair procedures .......................................................................................................................................... 159
4.16 Streamer unit .................................................................................................................................................................. 159
4.16.1 Checking procedures ...................................................................................................................................... 159
4.16.2 Repair procedures .......................................................................................................................................... 159
4.17 Swing flap motor............................................................................................................................................................. 161
4.17.1 Main swing flap motor ................................................................................................................................... 161
4.17.2 Secondary swing flap motor........................................................................................................................... 164
4.18 Swing raster motor ......................................................................................................................................................... 168
4.18.1 Checking procedures ...................................................................................................................................... 168
4.18.2 Repair procedures .......................................................................................................................................... 169
4.19 Thermistors ..................................................................................................................................................................... 169
4.19.1 Checking procedures ...................................................................................................................................... 169
4.19.2 Repair procedures .......................................................................................................................................... 173
4.20 Wifi control PCB .............................................................................................................................................................. 176
4.20.1 Checking procedures ...................................................................................................................................... 176
4.20.2 Repair procedures .......................................................................................................................................... 177
5 Third party components
5.1 Electrical circuit............................................................................................................................................................... 180
5.1.1 Checking procedures ...................................................................................................................................... 180
5.1.2 Repair procedures .......................................................................................................................................... 181
5.2 Refrigerant circuit ........................................................................................................................................................... 182
5.2.1 Checking procedures ...................................................................................................................................... 182
5.2.2 Repair procedures .......................................................................................................................................... 187
Table of Contents
53
180
Service manual
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