Service Manual

SiUS091133 Troubleshooting
Service Diagnosis 132
4.22 CT or Related Abnormality (24/30/36 Class Only)
Remote
Controller
Display
H8
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 more than A Hz, and the CT input current is less than B
A.
 If the error repeats, the system is shut down.
 Reset condition: Continuous run for about 60 minutes without any other error
Supposed
Causes
 Defective power module
 Broken or disconnected wiring
 Defective reactor
 Defective outdoor unit PCB
A (Hz) B (A)
32 0.5