9. TROUBLESHOOTING
9-1. Check before and after troubleshooting
9-1-1. Check power supply wiring.
●
Check that power supply wires are correctly connected to terminals No.1 and No.2 on the 3P terminal plate
in the outdoor unit.
9-1-2. Check inter-unit wiring.
●
Check that inter-unit wiring is correctly connected to the indoor unit from the outdoor unit.
9-1-3. Check power supply.
●
Check that voltage is in specified range (±10% of the rating).
●
Check that power is being supplied.
9-1-4. 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.
Hazardous voltage can cause ELECTRIC SHOCK or
DEATH. Disconnect power or turn off circuit breaker
before you start checking or servicing.
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