– 4 – SM830076
2-9 Auto. Mode for Automatic Heating/Cooling Switching........................................ 35
2-10 Defrosting Control, Outdoor Heat Exchanger Coil (Heating).............................. 37
2-11 4-Way Valve, Solenoid Control ...........................................................................38
(A)Normal Control Mode ....................................................................................38
(B)AUTO Control Mode ......................................................................................39
2-12 Automatic Restart after Power Interruption ........................................................39
2-13 Electronic Expansion Valve ................................................................................40
2-14 Compressor Discharge Gas Temperature ......................................................... 40
(A)Cooling .......................................................................................................... 40
(B)Heating (Except During Defrosting) ............................................................... 40
2-15 Compressor Current Detection Circuit ................................................................41
2-16 Electronic Expansion Valve Control ....................................................................42
2-17 Voltage Detection Control ...................................................................................43
3. ELECTRICAL DATA ....................................................................................................45
3-1 Indoor Unit (Electric Wiring Diagram, Schematic Diagram) ............................... 46
3-2 Outdoor Unit (Electric Wiring Diagram, Schematic Diagram)............................. 48
4. SERVICE PROCEDURES ........................................................................................... 53
4-1 Troubleshooting ..................................................................................................54
4-2 Checking the Electrical Components ..................................................................87