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

Troubleshooting

4.16 DC Voltage / DC Current Sensor Abnormality

H8
Remote Control
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
Decision and when the DC current is less than 0.3 A or DC voltage is less than 50V.
" If this error repeats 4 times, the system will be shut down.
Conditions
" The error counter will reset itself if this or any other error does not occur during the following
Supposed " Power transistor defective
Causes " Internal wiring broken or in poor contact
" Reactor defective
" Outdoor unit PCB defective
" Refrigerant shortage
Troubleshooting
Replace the outdoor unit PCB.
130
60-minute compressor running time (total time).
Be sure to turn off power switch before connect or disconnect connector,
Caution
or parts damage may be occurred.
SiEN12-710A
Service Diagnosis