Ct Or Related Abnormality - Daikin F-Series Service Manual

Troubleshooting

4.17 CT or Related Abnormality

H8
Remote
Controller
Display
Method of A CT or related error is detected by checking the compressor running frequency and CT-
detected input current.
Malfunction
Detection
Malfunction 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.)
Decision
Conditions
Supposed
Causes
140
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).
Power transistor defective
Internal wiring broken or in poor contact
Reactor defective
Outdoor unit PCB defective
SiBE04-705
Service Diagnosis