iii
SM830080
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
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