Specifications

SiBE04-624 Troubleshooting
Service Diagnosis 179
2.28 DC Voltage / DC Current Sensor Fault
Remote
Controller Display
H8
Outdoor Unit LED
Display
A5 55 ( - )
Method of
Malfunction
Detection
DC voltage or DC current sensor system fault is identified based on the compressor operation
frequency and the input current detected by the product of DC current and DC voltage.
Malfunction
Decision
Conditions
When the compressor operation frequency is more than 62 Hz
and when the input current is less than 0.75 A for 90 sec. continuously
(Input current is below 0.5 A)

The machine shuts down when the fault occurs 4 times.
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Fault counter will be reset to zero if the machine will not stop during accumulated
compressor operation time of 60 min. after restored from fault conditions.
Supposed
Causes

Defective outdoor unit PCB
Troubleshooting
Replace the outdoor unit PCB.
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.