Service manual

Troubleshooting SiBE041029_A
86 Service Diagnosis
4.21 CT or Related Abnormality (RX50/60G2V1B, 71 Class
Only)
Error Code
H8
Method of Error
Detection
A CT or related error is detected by checking the compressor running frequency and CT-
detected input current.
Error 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)
RX50/60G2V1B 55 0.5
71 class 32 0.5