Troubleshooting SiENBE05-722_A
88 Service Diagnosis
3.18 DC Voltage / Current Sensor Abnormality
Remote Control
Display
H8
Method of
Malfunction
Detection
DC voltage or DC current sensor abnormality is identified based on the compressor running
frequency and the input current.
Malfunction
Decision
Conditions
The compressor running frequency is above 52 Hz.
If the error repeats 4 times, the system is shut down.
Reset condition: Continuous run for about 60 minutes without any other error
Supposed
Causes
Defective outdoor unit PCB
Troubleshooting
Replace the outdoor unit PCB.
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
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