Compressor Sensor System Abnormality - Daikin 2MXS40H2V1B Service Manual

Troubleshooting for Outdoor Unit

7.12 Compressor Sensor System Abnormality

H0
Error Code
Method of Error Fault condition is identified by DC current which is detected before compressor startup.
Detection
Error Decision
Conditions
Supposed
Causes
Troubleshooting
Check the relay harness for the
compressor.
Turn off the power and turn it on
again.
195
When the DC current before compressor startup is other than 0.5 to 4.5 V (detected by
converting the sensor output to voltage), or the DC voltage is 50 V or less.
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
SiBE121123_A
Replace the harness.
No problem.
Keep on running.
Replace the outdoor unit
PCB.
(R11712)
Service Diagnosis