Service Manual
4. S tart-u p failu re (LC) (AP1 below m eans co ntrol board o f o u td o o r unit)
Main detection points:
• If the compressor wiring is correct?
• If the stop time of compressor is sufficient?
• If the compressor is damaged?
• If the refrigerant charging amount is too much?
The stop time is not sufficient and
the high and low pressure of system
is not balanced , please start the uni
after 3min
Check the connection situation
of outdoor mainboard A PI and
compressor COMP, and the
connect it according to wiring
diagram
Yes
/ Charge the refrigerant/
according to service
manual
No
_____
▼
______
Replace outdoor
mainboard API
No
,
_____
N
_____
Replace the
compressor
Yes-
Yes-
End
78
£ Installation and Maintenance
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