SiE-05C
Table of Contents
v
4.4
Defrost (For Heat Pump System) ........................................................ 227
4.5
Oil Equalization Control ....................................................................... 228
4.6
Heating Pump Down Residual Operation (For Heat Pump System) .. 232
4.7
Compressor Oil Temperature Protection Control ................................ 233
4.8
Low Pressure Protection Control Step ................................................ 234
4.9
High Pressure Control Step................................................................. 236
4.10 Discharge Temperature Protection Control ......................................... 237
4.11 Cooling Overload Control .................................................................... 238
4.12 Inverter Protection Control................................................................... 238
4.13 Standby by Outdoor Temperature When Heating
(For Heat Pump System)..................................................................... 238
4.14 Low Outdoor Temperature Control When Cooling .............................. 239
4.15 Low Noise and Demand Control.......................................................... 240
4.16 Compressor Capacity Control ............................................................. 241
4.17 Backup Operation................................................................................ 243
4.18 Emergency Operation.......................................................................... 244
4.19 Pump Down Operation ........................................................................ 248
5. Flow of Refrigerant in Each Operating Mode ......................................251
5.1
Heat Pump Model................................................................................ 251
5.2
Cooling Only Model ............................................................................. 264
Part 7 Test Operation
PLUS Series ....................................................................271
1. Test Operation ....................................................................................272
1.1
Procedure and Outline......................................................................... 272
1.2
Operation When Power is Turned On ................................................. 274
1.3
Outdoor Unit PC Board Ass’y .............................................................. 275
1.4
Switch Settings According to Number of Outdoor Units ...................... 277
1.5
Setting Modes...................................................................................... 278
1.6
Sequential Start ................................................................................... 286
1.7
External Control Adaptor for Outdoor Units
(DTA104A61 · DTA104A62) ................................................................ 287
1.8
Cool/Heat Mode Switching (*Except for Cooling Only System)........... 290
1.9
Low Noise Operation ........................................................................... 294
1.10 Demand Control .................................................................................. 295
1.11 Wiring Check Operation ...................................................................... 296
Part 8 Troubleshooting
PLUS Series ....................................................................297
1. Troubleshooting for VRV PLUS Series ...............................................299
1.1
Troubleshooting for VRV PLUS Series................................................ 299
2. Diagnosis by Malfunction Code...........................................................300
2.1
Diagnosis by Malfunction Code ........................................................... 300
3. Troubleshooting ..................................................................................301
3.1
Outdoor Unit: Actuation of Safety Device ............................................ 301
3.2
Outdoor Unit: Actuation of Safety Device ............................................ 302
3.3
Outdoor Unit: PC Board Defect ........................................................... 303
3.4
Outdoor Unit: Acturation of High Pressure Switch............................... 303
3.5
Outdoor Unit: Actuation of Low Pressure Switch................................. 304
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