Compressor System Sensor Abnormality - Daikin FLKS25BAVMB Service Manual

Troubleshooting

4.18 Compressor System Sensor Abnormality

H0
Error Code
Method of Error The system checks the DC current before the compressor starts.
Detection
Error Decision
Conditions
Supposed
Causes
Troubleshooting
Check the harness for the
compressor.
Turn off the power. Then, turn on
the power to restart the system.
88
The voltage converted from the DC current before compressor start-up is out of the range
0.5 ~ 4.5 V.
The DC voltage before compressor start-up is below 50 V.
Broken or disconnected harness
Defective outdoor unit PCB
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
Is the harness broken?
NO
Restart operation
and error displayed
again?
YES
YES
NO
SiBE05-722EE
Replace the harness.
Not a malfunction.
Continue use.
Replace the outdoor unit
PCB (main PCB).
(R22772)
Service Diagnosis