8 | Troubleshooting
User reference guide
50
ATXM20~50N2V1B
Daikin room air conditioner
4P518786-2F – 2020.05
LED on outdoor unit printed circuit board for 3AMXM series
Green Red Diagnosis
Micro-
compute
r normal
Malfunction detection
LED-A LED1 LED2 LED3 LED4
— — — — Turn the power off and on again. If the LED display recurs,
the outdoor unit PCB is faulty.
— — — — Power supply fault
(a)
(a) May NOT apply in some cases. Refer to the service manual.
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