high pressure stays on while foam brush is being used

[tascosa]

On 1 bay of my dilling harris SS, when foam brush is being used, the high pressure rinse function remains on and wastes a lot of water. Any ideas how to fix? I have tried cleaning foam brush solenoids, but can't seem to find the problem.
Thanks

 

[MEP001]

Touchtron doors or rotary switch?

It's not the solenoids.

 

[tascosa]

It is a Touchpad

 

[mac]

Sounds like a faulty one, unless someone has been working on the wiring lately.