There are two LEDs on the MDMC panel: RUN and ALM.
Table 1 describes the LEDs on the MDMC panel.
LED |
Color |
Status |
Meaning |
|---|---|---|---|
RUN |
Green |
On for 1s and off for 1s |
The board is working and communicating with the GSCU. |
On for 0.25s and off for 0.25s |
The board cannot communicate with the GSCU, or the board is not working. |
||
Off |
There is no power supply or the power distribution box is faulty. |
||
ALM |
Red |
Off |
There is no alarm. |
On |
There is an alarm. When the board is starting up, the status indicates that the ALM indicator functions well. |