LG AMNW07GDBL1 Service Manual page 69

Part 5. Trouble Shooting
Display
Title
code
Sensor error of high
43
pressure
Is sensor connected
to PCB correctly?
After replacement of outdoor
unit main PCB is the system
Replace corresponding
pressure sensor
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Only for training and service purposes
Cause of error
Abnormal value of sensor
(Open/Short)
No
Yes
No
also abnormal?
Yes
Check point & Normal condition
• Bad connection of connector PCB
• Bad connection high pressure connector
• Defect of high pressure connector (Open/Short)
• Defect of connector PCB (Open/Short)
• Defect of outdoor main PCB.
Connect sensor to PCB correctly
END
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