PM52 C30 error code

Hi All
PM52 4 colour press.
Running envelopes and press misdeeds and stops. Had many times before. Clear jam and start running again.

Not this time!

Press feed button and no suction. I have error code C30 on the console, but can’t find out what the error code is. Just lists as a feeder error.

 

The C30 error was because a breaker had tripped inside the control box. Reset and the error went, but still no suction or blow on the feeder head.

The problem was broken carbon veins in the pressure/vacuum pump. Engineer sourced and replaced veins and all is good.