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Part 5. Trouble Shooting
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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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