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SiUS12-928_B
Troubleshooting with LED
Service Diagnosis
136
1.2
Outdoor Unit
The outdoor unit has a green LED (LED A) and red LEDs (LED 1 ~ LED 4) on the PCB.
When the microcomputer works in order, the LED A blinks, and when the system is in normal
condition, the red LEDs are OFF.
Even after the error is canceled and the unit operates in normal condition, the LED indication
remains.
Service monitor PCB
LED A
LED 1
LED 2
LED 3
LED 4
2MXS18GVJU
3MXS24JVJU
4MXS32GVJU
(R17364)