YES
Power off, then restart the unit after 3
minutes.
Does the error still exist?
Replace the outdoor
main control board
Does a problem remain? The unit is operating normallyNO
Check the wirings and connections
YES
Are all the
connections good?
Ensure proper connections
NO
YES
Replace the adapter main PCB
Problem solvedNO
DLCM(R/H)B: Service Manual
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