PaulS97

I found out that the power supply ALM was the fan counter that need to be reset to zero.  This should be also known in the procedure.

 Hi,

I can reset all others, but not the power supply.

The message is "No write access with active controller"

Access level 3, Not-aus pressed. Any suggestion?

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Split from 840D having problem with reset of alarm (DP003.Slave003:XLM_00 (2).

Thank you for the suggestion, but I have no P0254.

Update:

OK, I got it. Changed r2 in supply module MD to 45 (from 00), module accepted the change.

Changed P0251 to 0 and restarted the machine.

Up and running!

Thank you all for your help.