Sanyo C1852 Service Manual page 31

11. SERVICE PROCEDURES
2) Air Conditioner does not Operate
1 1 1 1 1
Circuit breaker trips (or fuse blows).
(a) When the circuit breaker is set to ON, it is tripped soon.
• There is a possibility of ground fault.
• Check insulation resistance.
If resistance value is 1 M or less, it is a defect of insulation.
(Example)
Circuit
breaker
*Set the circuit breaker to OFF.
Remove power supply cords
1
from the terminal plate in
the outdoor unit.
• Check insulation resistance
of power supply cords.
Remove inter-unit power line
2
from the terminal plate in
the outdoor unit.
• Check insulation resistance
of outdoor unit.
3
Remove inter-unit power line
from the terminal plate in
the indoor unit.
• Check insulation resistance
of indoor unit.
Inter-unit power lines are
defective.
1 2
Outdoor
unit
6 1
5 2
Power
3
supply
G
cords
Inter-unit
power line
Ground
OK
OK
OK
3
Indoor
unit
4
1
2
3
G
NO
Execute
rewiring.
NO Insulation of
outdoor unit
is defective.
NO
Insulation of
indoor unit
is defective.
Execute
rewiring.
– 31 –
• Check insulation
resistance of
electrical parts
in the outdoor unit.
• Check insulation
resistance of
electrical parts
in the indoor unit.
1334_X_S
SM830079