
68
15.4.22 F99 (Output Over Current Detection)
Malfunction Decision Conditions
During operation of cooling and heating, when an output over-current (DC peak current value at IPM Prevention
Control) is detected by checking the current that flows in the inverter DC peak sensing circuitry.
Malfunction Caused
Faulty outdoor unit PCB
Faulty
compressor
Troubleshooting
Checking the power transistor.
Never touch any live parts for at least 10 minutes after turning off the circuit breaker.
If unavoidable necessary to touch a live part, make sure the power transistor’s supply voltage is below 50V using
the tester.
For the UVW, make measurement at the Faston terminal on the board of the relay connector.
Tester’s negative terminal
Power transistor (+)
UVW
Power transistor (-)
UVW
Tester’s positive terminal
UVW
Power transistor (+)
UVW
Power transistor (-)
Normal resistance
Several k
Ω
to several M
Ω
Abnormal resistance
0 or
∞
Summary of Contents for CS-CE12NKE
Page 12: ...12 4 Location of Controls and Components 4 1 Indoor Unit 4 2 Outdoor Unit 4 3 Remote Control ...
Page 13: ...13 5 Dimensions 5 1 Indoor Unit ...
Page 14: ...14 5 2 Outdoor Unit ...
Page 15: ...15 6 Refrigeration Cycle Diagram ...
Page 16: ...16 7 Block Diagram ...
Page 17: ...17 8 Wiring Connection Diagram 8 1 Indoor Unit ...
Page 18: ...18 8 2 Outdoor Unit ...
Page 19: ...19 9 Electronic Circuit Diagram 9 1 Indoor Unit ...
Page 20: ...20 9 2 Outdoor Unit ...
Page 22: ...22 10 2 Outdoor Unit ...
Page 45: ...45 15 3 Error Codes Table ...
Page 46: ...46 ...
Page 74: ...74 17 Technical Data 17 1 Operation Characteristics 17 1 1 CU CE9NKE ...
Page 75: ...75 ...
Page 76: ...76 ...
Page 77: ...77 ...
Page 78: ...78 17 1 2 CU CE12NKE ...
Page 79: ...79 ...
Page 80: ...80 ...
Page 81: ...81 ...