Service manual

Troubleshooting for Outdoor Unit SiUS12-928_B
179 Service Diagnosis
6.16 CT or Related Abnormality
Remote
Controller
Display
H8
Outdoor Unit LED
Display
A j 1 i 2 i 3 h 4 h
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 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)
18 class 55 1.25
24/32 class 32 0.5