Troubleshooting
SiUS091628EA
91
Service Diagnosis
4.23 Compressor System Sensor Abnormality
Error Code
H0
Method of Error
Detection
The system checks the DC current before the compressor starts.
Error Decision
Conditions
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.
Supposed
Causes
Broken or disconnected harness
Defective outdoor unit PCB
Troubleshooting
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
NO
(R24613)
YES
Turn off the power. Then, turn on
the power to restart the system.
YES
NO
Replace the harness.
Replace the outdoor unit
PCB (main PCB).
Is the harness broken?
Restart operation
and error displayed
again?
Check the (relay) harness for the
compressor.
Not a malfunction.
Keep observing.
Summary of Contents for FFQ09Q2VJUFFQ12Q2VJUFFQ15Q2VJUFFQ18Q2VJURX09QMVJURX12QMVJURX15QMVJURX18QMVJU
Page 12: ...SiUS091628EA 1 List of Functions Part 1 List of Functions 1 Functions 2...
Page 14: ...SiUS091628EA 3 Specifications Part 2 Specifications 1 Specifications 4...
Page 120: ...Check SiUS091628EA 109 Service Diagnosis 15 18 class R20701 1 2 3 4 Multimeter...
Page 122: ...Check SiUS091628EA 111 Service Diagnosis 15 18 class R20704 W V U DC_P1 DC_N1...