10-05-2024, 10:05 AM
Carl, just a a note to store in memory, some relays, added by coach builder, are there to convert a 12 vdc thermostat signal to a ground signal. Many A/C circuit boards send 12 vdc thermostat signals. The AH zone wires are ground signals.
Take a jumper cable that is connected to ground and touch the living room thermostat connection. Tthe zone pump and living room fans will come on.
Not being there, I can not say this is connected to your problem. Just sharing info.
Take a jumper cable that is connected to ground and touch the living room thermostat connection. Tthe zone pump and living room fans will come on.
Not being there, I can not say this is connected to your problem. Just sharing info.
Rudy Legett
2003 Foretravel U320 4010
ISM11 450 hp Allison 4000R
Factory Authorized Aqua Hot Repair Center
Southeast Texas Area