8. TROUBLESHOOTING
8-1. Check before and after troubleshooting
8-1-1. Check power supply wiring.
●
Check that power supply wires are correctly connected to terminals L and N on the terminal plate in the indoor
unit.
8-1-2. Check inter-unit wiring.
●
Check that inter-unit wiring is correctly connected to the outdoor unit from the indoor unit.
8-1-3. Check power supply.
●
Check that voltage is in specified range (±10% of the rating).
●
Check that power is being supplied.
8-1-4. 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.
Outdoor
unit
Indoor
unit
Power supply :
Single phase
220 – 240V ~ 50Hz
Ground
Ground
Inter – unit
power wiring
Power plug
(Local supply)
Inter – unit
control wiring
L
1
2
3
4
L
1
2
3
4
N
N
25
WARNING
Hazardous voltage can cause ELECTRIC SHOCK or
DEATH. Disconnect power or turn off circuit breaker
before you start checking or servicing.
