Hi,

I have a 1215C CPU and it was in operation for almost a year.

Now, it has

RUN/STOP LED flashes Green/Orange alternate.

ERROR LED Solid RED. (Does not blink)

MAINT LED Blinks YELLOW 

How can I make it operational again, will it work if I upload program again or is there any hardware fault?

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Split from CPU1215 all led blinking on first power on.

Hello,

try find maybe in System manual LED status description, combination.

Hi,

the LED status (with solid red/error) is not described in the manual.

But  you can try to update/reinstall the firmware of the cpu with a simatic memory card.

It is worth a try, maybe this works.

Status LEDs

Firmware update

regards

sancruz