Ct Or Related Abnormality - Daikin SUPER MULTI NX G Series Service Manual

Troubleshooting

5.20 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-detected
Malfunction input current.
Detection
 The compressor running frequency is more than
Malfunction
Decision
Conditions
 If the error repeats 4 times, the system is shut down.
 Reset condition: Continuous run for about 60 minutes without any other error
 Defective power transistor
Supposed
 Breaking of wiring or disconnection
Causes
 Defective reactor
 Defective outdoor unit PCB
131
1 2 3 4
18 class 24/32 class
(Hz) 55
(A) 1.25
Hz and input current is below
32
0.5
SiUS12-928_A
A.
Service Diagnosis