Outdoor Unit - Daikin 3MKS50E3V1B Service Manual

Troubleshooting with LED
1.2

Outdoor Unit

The outdoor unit has one green LED (LED A) on the PCB. When the LED A blinks, the
microcomputer works in order.
There are a green LED (LED A) and red LEDs on the outdoor unit PCB. The LED A indicates
microcomputer operation condition. In normal condition, the LED A is blinking and the other
LEDs are OFF.
Even after the error is canceled and the unit operates in normal condition, the LED indication
remains.
252
Service monitor PCB
LED A
LED 1
LED 2
LED 3
LED 4
3 or 4-room model
SiBE121135
LED A
LED 1
LED 2
LED 3
LED 4
LED 5
5-room model
(R17270)
Service Diagnosis