Troubleshooting
Electrical Control System 203
2.4.1.2. Outdoor unit malfunction
Whether the outdoor
main board has error
display
Refer to corresponding solving stepsYes
No
No Check whether the power is on
Replace outdoor main
board
Yes
Whether the outdoor
unit is power on
Check whether the
communication wire
between the indoor and
outdoor unit is
connected correctly
Yes
Connect the wiring well or
replace the communication wire
No
Replace the indoor PCB Trouble is solved
check if the errors
happen again?
Yes
No
Outdoor unit malfunction
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