45
9.2.2 Indoor / outdoor units communication protection error diagnosis and solution
No
Reconnect and retest
Replace outdoor e-box.
Yes
Yes
No
Yes
Replace indoor
PCB and repower
The unit does not work normally.
Check the wiring between indoor and outdoor
unit. Is the connection of L, N, S and GND good?
No
Is the LED4(red) bright and LED1(yellow)
blinking on outdoor PCB?
The power supply for outdoor PCB is fail.
Check the wiring on outdoor PCB
comparing with wiring plate. Is the
connection good?
The unit does
not work normally.
Turn off the power supply, after 1 minute, connect the
power supply , turn on the unit with remote controller
Correct the connection.
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