Ct Or Related Abnormality - Daikin Super Multi NX C-Series Service Manual

Troubleshooting

5.18 CT or Related Abnormality

H8
Remote
Controller
Display
Outdoor Unit LED
A
Display
Method of A CT or related error is detected by checking the compressor running frequency and CT-
Malfunction detected input current.
Detection
Malfunction
The compressor running frequency is below 55 Hz and the CT input is below 0.1 V.
Decision (The input current is also below 1.25 A.)
" If this error repeats 4 times, the system will be shut down.
Conditions
" The error counter will reset itself if this or any other error does not occur during the following
" Power transistor defective
Supposed
" Internal wiring broken or in poor contact
Causes
" Reactor defective
" Outdoor unit PCB defective
190
5 1 4 2 4 3 1 4
60-minute compressor running time (total time).
1
SiE12-411
Service Diagnosis