Sanyo SPW-C303G5 User Manual
SM830043
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4
4. 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 1M
Ω
or less, it is a defect of insulation.
1
2
3
(Example)
*Set the circuit breaker to OFF.
Remove power supply cords
from the terminal plate in
the outdoor unit.
• Check insulation resistance
of power supply cords.
from the terminal plate in
the outdoor unit.
• Check insulation resistance
of power supply cords.
OK
NO
NO
Insulation of
outdoor unit
is defective.
outdoor unit
is defective.
Execute
rewiring.
Remove interunit power line
from the terminal plate in
the outdoor unit.
• Check insulation resistance
of outdoor unit.
from the terminal plate in
the outdoor unit.
• Check insulation resistance
of outdoor unit.
OK
Remove interunit power line
from the terminal plate in
the indoor unit.
• Check insulation resistance
of indoor unit.
from the terminal plate in
the indoor unit.
• Check insulation resistance
of indoor unit.
OK
Interunit power lines are
defective.
defective.
NO
Insulation of
outdoor unit
is defective.
outdoor unit
is defective.
• Check insulation
resistance of
electrical parts
in the outdoor unit.
resistance of
electrical parts
in the outdoor unit.
• Check insulation
resistance of
electrical parts
in the outdoor unit.
resistance of
electrical parts
in the outdoor unit.
Execute
rewiring.
0613_X_S
+
+
+
+
+
+
+
1
3
2
Circuit
breaker
breaker
Outdoor
unit
5 1
6 2
3
4
unit
5 1
6 2
3
4
Indoor
unit
1
2
3
4
unit
1
2
3
4
Power
supply
cords
supply
cords
Interunit
power line
power line
L
N
N
Earth
+
+
+
+
+
+
+
+
+
1
3
2
Circuit
breaker
breaker
Indoor
unit
1
unit
1
2
Power
supply
cords
supply
cords
Interunit
power line
power line
L1
L2
L3
N
L2
L3
N
Earth
4
+
+
+
+
+
4
Outdoor
unit
5 1
6
7 2
4
3
unit
5 1
6
7 2
4
3
8
4
3
3