90
15.5.30. 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
:
to several M
:
Abnormal resistance
0 or
Содержание CS-E24MKES
Страница 9: ...9 4 Location of Controls and Components 4 1 Indoor Unit 4 2 Outdoor Unit 4 3 Remote Control ...
Страница 10: ...10 5 Dimensions 5 1 Indoor Unit Remote Control ...
Страница 11: ...11 5 2 Outdoor Unit ...
Страница 12: ...12 6 Refrigeration Cycle Diagram ...
Страница 13: ...13 7 Block Diagram ...
Страница 14: ...14 8 Wiring Connection Diagram 8 1 Indoor Unit ...
Страница 15: ...15 8 2 Outdoor Unit 8 2 1 CU E24MKE ...
Страница 16: ...16 8 2 2 CU E28MKE ...
Страница 17: ...17 9 Electronic Circuit Diagram 9 1 Indoor Unit ...
Страница 18: ...18 9 2 Outdoor Unit 9 2 1 CU E24MKE ...
Страница 19: ...19 9 2 2 CU E28MKE ...
Страница 20: ...20 10 Printed Circuit Board 10 1 Indoor Unit 10 1 1 Main Printed Circuit Board ...
Страница 22: ...22 10 1 6 Comparator Printed Circuit Board 10 1 7 Human Activity Sensor Printed Circuit Board ...
Страница 23: ...23 10 2 Outdoor Unit 10 2 1 Main Printed Circuit Board ...
Страница 24: ...24 10 2 2 Power Printed Circuit Board ...
Страница 92: ...92 16 1 3 To remove power electronic controller ...
Страница 93: ...93 16 1 4 To remove discharge grille 16 1 5 To remove control board ...
Страница 94: ...94 16 1 6 To remove cross flow fan and indoor fan motor ...
Страница 95: ...95 ...
Страница 109: ...109 18 2 Outdoor Unit 18 2 1 CU E24MKE ...