11. TROUBLESHOOTING
11-1. Check before and after
troubleshooting
11-1-1. Check power supply wiring.
●
Check that power supply wires are correctly
connected to terminals No.1 and No.2 on the terminal
plate in the outdoor unit.
11-1-2. Check inter-unit wiring.
●
Check that inter-unit wiring is correctly connected to
the indoor unit from the outdoor unit.
11-1-3. Check power supply.
●
Check that voltage is in specified range
(±10% of the rating).
●
Check that power is being supplied.
11-1-4. Check lead wires and connectors in
indoor and outdoor units.
●
Check that coating of lead wires is not damaged.
●
Check that lead wires and connectors are firmly
connected.
●
Check that wiring is correct.
29
WARNING
Hazardous voltage can cause ELECTRIC
SHOCK or DEATH. Disconnect power or turn
off circuit breaker before you start checking
or servicing.
4
3
2
1
Ground
Ground
Power supply :
220–240V ~ 50Hz
4
3
2
1
1
2
Ground
Outdoor Unit
I
ndoor Unit A
Inter-unit
wiring
4
L
I
ndoor Unit B
N
1
2
4
L
N
1
2
