Troubleshooting; Check Before And After Troubleshooting; Check Power Supply Wiring; Check Indoor Unit Wiring - Technibel GR120R Technical Data & Service Manual

8.TROUBLESHOOTING

8-1 Check before and after troubleshooting

Hazardous voltage can cause ELECTRICAL SCHOCK
or DEATH. Disconnect power or turn off circuit
breaker before you start checking or servicing.

8-2 Check power supply wiring

•
Check that power supply wires are connected to terminals L and N on the terminal plate in the indoor unit.

8-3 Check indoor unit wiring

•
Check that inter-unit wiring is correctly connected to the outdoor unit from the indoor unit

8-4 Check power supply

•
Check that voltage is in specified range (+/- 10% of the rating)
•
Check that power is being supplied.
8-5 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.
WARNING
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