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5. TROUBLESHOOTING
5-1 Check Before and After Troubleshooting
(A) Check power supply wiring.
• Check the power supply wires are correctly connected.
(B) Check power supply.
• Check that voltage is in specified range (±10% of the rating).
• Check that power is being supplied.
• WARNING: If the following troubleshooting must be done with power supplied,
be careful not to touch any uninsulated live part that can cause
5-2 Circuit Breaker Trips or Fuse Blows
• When circuit breaker is set to ON, it trips in a few moments. Resetting is not possible.
• Measure insulation resistance. There is a possibility of ground fault.
If resistance value is 1 Mohm or less, insulation is defective.
5-3 Circuit Breaker Trips in Several Minutes
After Turning Air Conditioner On
1 • There is the possibility of short circuit.
eletric shock
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