Mitsubishi Heavy Industries FDUA160AVSAVH Service Manual page 4

(34) Indoor unit overload alarm (RC-EX(Z)3A only).......................................... 25
(35) Peak-cut timer (RC-EX(Z)3A only) ............................................................ 25
(36) Motion sensor control (RC-EX(Z)3A and RCN-E2 only)............................ 26
(37) Dew drop prevention control 1 (FDUA160VH only)................................... 27
(38) Dew drop prevention control 2 (FDUA160VH only)................................... 27
1.1.4 Operation control function by the outdoor control ............................ 28
(1) Determination of comressor speed (Frequency) ....................................... 28
(2) Compressor start control ........................................................................... 29
(3) Compressor soft start control .................................................................... 29
(4) Outdoor fan control.................................................................................... 29
(5) Defrost operation ....................................................................................... 31
(6) Protective control/anomalous stop control by compressorʼs number of revolutions ..... 32
(7) Silent mode ............................................................................................... 36
(8) Test run ...................................................................................................... 36
(9) Pump-down control ................................................................................... 36
(10) Base heater ON/OFF output control (Option)............................................ 37
(11) DRED ........................................................................................................ 37
1.2 MAINTENANCE DATA ................................................................................... 39
1.2.1 Diagnosing of microcomputer circuit .................................................. 39
(1) Selfdiagnosis function ................................................................................. 39
(2) Troubleshooting procedure.......................................................................... 42
(3) Troubleshooting at the indoor unit ............................................................... 42
(4) Troubleshooting at the outdoor unit ............................................................. 48
(5) Check of anomalous operation data with the remote control ...................... 56
(6) Power transistor module (Including the driver PCB) inspection procedure ... 58
(7) Inverter checker for diagnosis of inverter output ......................................... 59
(8) Outdoor unit control failure diagnosis circuit diagram ................................. 60
1.2.2 Troubleshooting flow ............................................................................. 61
(1) List of troubles ............................................................................................. 61
(2) Troubleshooting ........................................................................................... 62
1.3 ELECTRICAL WIRING ...................................................................................109
(1) Indoor units................................................................................................109
(2) Outdoor units .............................................................................................111
1.4 PIPING SYSTEM ............................................................................................112
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'21 • PAC-SM-398