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

SiBE12-712
4.16 DC Voltage / DC Current Sensor Abnormality
H8
Remote
Controller
Display
Method of DC voltage or DC current sensor system fault is identified based on the compressor operation
Malfunction frequency and the input current detected by the product of DC current and DC voltage.
Detection
Malfunction When the compressor operation frequency is more than 52 Hz
and when the DC current is less than 0.3 A or DC voltage is less than 50V.
Decision
Conditions
Supposed
Causes
Troubleshooting
Replace the outdoor unit PCB.
Service Diagnosis
If this error repeats 4 times, the system will be shut down.
The error counter will reset itself if this or any other error does not occur during the following
60-minute compressor running time (total time).
Power transistor defective
Internal wiring broken or in poor contact
Reactor defective
Outdoor unit PCB defective
Refrigerant shortage
Be sure to turn off power switch before connect or disconnect connector,
Caution or parts damage may be occurred.
Troubleshooting
221