Heidelberg Speedmaster SM 74

When doing automatic wash down the cleaning blade/ tray will not kick in everything.
It is doing this on both units.
It will always work if button pressed separately.
Tried reseting parameters etc using default but still have the problem.
Any ideas where to look.
Thank you for your help.
Update.
I have noticed that when you put her to automatic wash she starts up okay but not ownlay does she not kick wash up blade in but it does not put any washup liquid .
In short it's not operating correct at all.
Its random though as sometimes it does everything perfect.
??

 

Check the sensors on those units also not sure what card talks to the wash up program could try to reseat the board

 

Hi sir:
Try to test the automatic switch for : dirty , corroded, loose wires, or connector, or defective switch, of lack of voltage, check his schematic electrical wiring !

However look for the solenoids valve, by dirty, loose hoses, or leaking, or defective, or NOT enough voltage, look the wiring schematic electrical please.

 

Thank you all
Will go through the list

 

Okay

Blessings