Sanyo 1 852 658 85, Technical & Service Manual, Page: 4 / 48

iii
11-2.Air conditioner does not operate .......................................................................................... 29
11-2-1. Circuit breaker trips (or fuse blows).......................................................................... 29
A. When the circuit breaker is set to ON, it is tripped soon ...................................... 29
B. Circuit breaker trips in several minutes after turning the air conditioner on ......... 29
11-2-2. Neither indoor nor outdoor unit runs......................................................................... 30
A. Power is not supplied ........................................................................................... 30
B. Check "OPERATION selector" switch in the indoor unit ...................................... 30
C. Check remote control unit ........................................................................................ 30
D. Check fuse on the indoor PCB Ass'y ........................................................................ 31
E. Check TIMER SELECT button on the remote control unit. .......................................... 31
11-2-3.Only outdoor unit does not run.................................................................................. 32
A. Check setting temperature. .................................................................................. 32
B. Check PCB Ass'y in either indoor or outdoor unit. ............................................... 32
11-2-4.Only indoor unit does not run.................................................................................... 32
11-3.Some part of air conditioner does not operate. .................................................................... 33
11-3-1.Only indoor fan does not run..................................................................................... 33
11-3-2.Only flap motor does not run..................................................................................... 33
11-3-3.Only outdoor fan does not run. ................................................................................. 33
11-3-4.Only compressor does not run.................................................................................. 34
11-4.Air conditioner operates, but abnormalities are observed. ................................................... 35
11-4-1.Operation does not switch from HEAT to COOL (or COOL to HEAT). ...................... 35
11-4-2.Poor cooling or heating. ............................................................................................ 36
11-4-3.Excessive cooling or heating. ................................................................................... 36
11-5.If a sensor is defective. ......................................................................................................... 37
11-5-1.Indoor coil temp. thermistor (TH1) is defective.......................................................... 37
11-5-2.Room temp. thermistor (TH2) is defective................................................................. 37
12. ARRANGEMENT OF ELECTRICAL COMPONENTS................................................................. 38
13. CHECKING ELECTRICAL COMPONENTS
13-1.Measurement of insulation resistance.................................................................................. 40
13-1-1. Power supply wires................................................................................................... 40
13-1-2. Indoor unit ................................................................................................................ 40
13-1-3. Outdoor unit.............................................................................................................. 40
13-1-4. Measurement of insulation resistance for electrical parts ........................................ 40
13-2.Checking continuity of Fuse on PCB Ass'y .......................................................................... 41
13-3.Checking motor capacitor..................................................................................................... 41
INSTRUCTION MANUAL .......................................................................................... 42
APPENDIX