Indoor unit display LED STATUS
E1 Communication malfunction between indoor and outdoor units
No
Yes
No
Yes
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
Replace indoor PCB and repower
Replace outdoor e-box.
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