Daikin Altherma 3 M - Page 6

Table of Contents
Service manual
6
EBLA09~16DA + EDLA09~16DA
Daikin Altherma 3 M
ESIE20-06A – 2021.03
3.10 Flow switch...................................................................................................................................................................... 155
3.10.1 Checking procedures...................................................................................................................................... 155
3.10.2 Repair procedures .......................................................................................................................................... 156
3.11 High pressure switch....................................................................................................................................................... 157
3.11.1 Checking procedures...................................................................................................................................... 157
3.11.2 Repair procedures .......................................................................................................................................... 159
3.12 Hydro PCB ....................................................................................................................................................................... 160
3.12.1 Checking procedures...................................................................................................................................... 160
3.12.2 Repair procedures .......................................................................................................................................... 164
3.13 Low pressure switch ....................................................................................................................................................... 167
3.13.1 Checking procedures...................................................................................................................................... 167
3.13.2 Repair procedures .......................................................................................................................................... 168
3.14 Main PCB ......................................................................................................................................................................... 171
3.14.1 Single fan outdoor unit - single phase ........................................................................................................... 171
3.14.2 Single fan outdoor unit - three phase ............................................................................................................ 181
3.15 Noise filter PCB ............................................................................................................................................................... 194
3.15.1 Single fan outdoor unit - single phase ........................................................................................................... 194
3.15.2 Single fan outdoor unit - three phase ............................................................................................................ 204
3.16 Outdoor unit fan motor .................................................................................................................................................. 217
3.16.1 Single phase outdoor unit .............................................................................................................................. 217
3.16.2 Three phase outdoor unit .............................................................................................................................. 224
3.17 Plate work ....................................................................................................................................................................... 230
3.17.1 To remove the discharge grille....................................................................................................................... 230
3.17.2 To open the outdoor unit............................................................................................................................... 231
3.17.3 To remove the top plate................................................................................................................................. 231
3.17.4 To remove the switch box.............................................................................................................................. 232
3.17.5 To install the switch box................................................................................................................................. 237
3.17.6 To close the outdoor unit............................................................................................................................... 241
3.17.7 To install the discharge grille.......................................................................................................................... 242
3.18 Reactor ............................................................................................................................................................................ 242
3.18.1 Checking procedures...................................................................................................................................... 243
3.18.2 Repair procedures .......................................................................................................................................... 244
3.19 Refrigerant pressure sensor ........................................................................................................................................... 244
3.19.1 Checking procedures...................................................................................................................................... 244
3.19.2 Repair procedures .......................................................................................................................................... 246
3.20 Thermistors ..................................................................................................................................................................... 248
3.20.1 Refrigerant side thermistors .......................................................................................................................... 248
3.20.2 Water side thermistors .................................................................................................................................. 254
3.20.3 Other thermistors........................................................................................................................................... 261
3.21 User interface.................................................................................................................................................................. 266
3.21.1 Checking procedures...................................................................................................................................... 266
3.21.2 Repair procedures .......................................................................................................................................... 268
3.22 Water flow sensor........................................................................................................................................................... 268
3.22.1 Checking procedures...................................................................................................................................... 268
3.22.2 Repair procedures .......................................................................................................................................... 270
3.23 Water pressure sensor.................................................................................................................................................... 272
3.23.1 Checking procedures...................................................................................................................................... 272
3.23.2 Repair procedures .......................................................................................................................................... 274
3.24 Water pump .................................................................................................................................................................... 276
3.24.1 Checking procedures...................................................................................................................................... 276
3.24.2 Repair procedures .......................................................................................................................................... 279
4 Third party components 284
4.1 Electrical circuit............................................................................................................................................................... 284
4.1.1 Checking procedures...................................................................................................................................... 284
4.1.2 Repair procedures .......................................................................................................................................... 286
4.2 Refrigerant circuit ........................................................................................................................................................... 286
4.2.1 Checking procedures...................................................................................................................................... 286
4.2.2 Repair procedures .......................................................................................................................................... 291
4.3 Water circuit ................................................................................................................................................................... 299
4.3.1 Checking procedures...................................................................................................................................... 299
4.3.2 Repair procedures .......................................................................................................................................... 302
4.4 Manufacturer components ............................................................................................................................................ 307
4.4.1 Checking procedures...................................................................................................................................... 307
4.4.2 Repair procedures .......................................................................................................................................... 307
4.5 External factors ............................................................................................................................................................... 307
4.5.1 Checking procedures...................................................................................................................................... 307
5 Maintenance 309
5.1 To clean the outdoor unit heat exchanger..................................................................................................................... 309