Daikin F-Series, Service Manual

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SiBE12-713 Troubleshooting
Service Diagnosis 261
5.20 CT or Related Abnormality
Remote
Controller
Display
H8
Outdoor Unit LED
Display A
5
1
4
2
4
3
1
4
1
Method of
Malfunction
Detection A CT or related error is detected by checking the compressor running frequency and CT-
detected input current.
Malfunction
Decision
Conditions
„
The compressor running frequency is below 55 Hz and the CT input is below 0.1 V.
(The input current is also below 0.5 A.)
„
If this error repeats 4 times, the system will be shut down.
„
The error counter will reset itself if this or any other error does not occur during the following
60-minute compressor running time (total time).
Supposed
Causes
„
Power transistor defective
„
Internal wiring broken or in poor contact
„
Reactor defective
„
Outdoor unit PCB defective