Dc Voltage / Dc Current Sensor Fault - Daikin E Series Service Manual

SiBE04-624

2.28 DC Voltage / DC Current Sensor Fault

H8
Remote
Controller Display
Outdoor Unit LED A5
Display
Method of 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
Detection
Malfunction 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
Decision
(Input current is below 0.5 A)
Conditions
Supposed
Causes
Troubleshooting
Replace the outdoor unit PCB.
Service Diagnosis
55 ( - )
The machine shuts down when the fault occurs 4 times.
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.
Defective outdoor unit PCB
Be sure to turn off power switch before connect or disconnect connector,
Caution or parts damage may be occurred.
Troubleshooting
179