6. TROUBLESHOOTING
6-1 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
eletric shock
6-2 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.
6-3 Circuit Breaker Trips in Several Minutes
After Turning Air Conditioner On
1 • There is the possibility of short circuit.
3
Summary of Contents for 38.7104.070
Page 9: ...2 DIMENSIONAL DATA 9...
Page 13: ...4 ELECTRICAL DATA 4 1 Electric Wiring Diagrams HEAT PUMP MODELS COOLING MODELS 13...
Page 14: ...4 2 Wiring System Diagram HEAT PUMP MODELS COOLING MODELS 14...
Page 29: ...6 5 Some Parts of the Air Conditioner Do Not Operate 5...
Page 30: ...6 6 Air Conditioner Operates But Abnormalities Are Observed 6...
Page 31: ...7...
Page 32: ...6 7 Poor Cooling or Heating 8...
Page 33: ...6 8 Excessive Cooling or Heating 6 9 A Sensor is Defective 9...
