iii
2-7
Overload Protection (Heating) ..................................................................II - 9
2-8
Discharge Temperature Control (Cooling and Heating) ........................... II - 10
2-9
Auto. Mode for Automatic Heating/Cooling Switching .............................. II - 11
2-10 Defrosting Control, Outdoor Heat Exchanger Coil (Heating) .................... II - 12
2-11 4-Way Valve, Solenoid Control .................................................................II - 13
(A) Normal Control Mode .......................................................................... II - 13
(B) AUTO Control Mode ...........................................................................II - 14
2-12 Automatic Restart after Power Interruption ............................................... II - 14
2-13 Electronic Expansion Control Valve .......................................................... II - 15
2-14 Compressor Discharge Gas Temperature ................................................ II - 15
(A) Cooling ................................................................................................II - 15
(B) Heating (Except During Defrosting) .................................................... II - 15
2-15 Compressor Current Detection Circuit ...................................................... II - 16
2-16 Dehumidifying Operation .......................................................................... II - 17
2-17 Auto-flap Control ....................................................................................... II - 18
2-18 Controlled by Electronic Expansion Valve ................................................ II - 19
2-19 Voltage Detection Control ......................................................................... II - 20
3. ELECTRICAL DATA ........................................................................................III - 1
3-1
Indoor Unit (Electric Wiring Diagram, Schematic Diagram) ..................... III - 2
3-2
Outdoor Unit (Electric Wiring Diagram, Schematic Diagram) .................. III - 14
4. SERVICE PROCEDURES ............................................................................... IV - 1
4-1
Troubleshooting ...................................................................................... IV - 2
4-2
Checking the Electrical Components ...................................................... IV - 36
5. APPENDIX ....................................................................................................... V - 1
5-1
P.C.B. ...................................................................................................... V - 2
