Pioneer WAE012AMFI15RL Service Manual page 42

 For 18000 BTU, 230V, Cool Only / 18000 BTU, 230V, Heat Pump:
LED2
LED1
(red)
standby
LED2 slow flashing
LED1 on
The picture of PCB above is only for reference.
LED 1 is a red light and for the PCB POWER display.
LED 2 is a yellow light. After power on, it will be slow flash (once every 5 secs) when the unit is in
standby and quick flash (2.5 per sec) if the unit has some problems, it will be always on when the unit
is in operation.
LED 4 (green) and LED3 (red) are two lights controlled by the compressor driver chip. Below are the
meanings for those lights.
LED3
(green)
(yellow)
operating
on
on
& LED4
(red)
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