Dc Voltage / Current Sensor Abnormality - Daikin FTX20JV1B Service Manual

Troubleshooting

4.20 DC Voltage / Current Sensor Abnormality

H8
Error Code
Method of Error DC voltage or DC current sensor abnormality is identified based on the compressor running
frequency and the input current.
Detection
Error Decision
Conditions
Supposed
Causes
Troubleshooting
Replace the outdoor unit PCB.
77
The compressor running frequency is above 52 Hz.
(The input current is also below 0.1 A.)
If the error repeats, the system is shut down.
Reset condition: Continuous run for about 60 minutes without any other error
Defective outdoor unit PCB
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
SiBE041010EA
Service Diagnosis