1 selection will not shut off with timer

[kentadel]

I have a problem in one of my self service bays. The wax, (high pressure), will not shut off when time expires on meter. Turning to stop will shut it down but a customer could finish with wax and leave the bay and leave the pump running.
Any ideas?

 

[MEP001]

Check all your terminal strips and the switch itself - sounds like you've got a stray wire touching across somewhere.

 

[kentadel]

Thanks MEP100, Pulling what hair I have left on this one. I am thinking the problem may be in the equipment room pumpstand wiring or relays. Everything in the bay looks ok, and checks out the same as the next bay over.