Taking my coach out for the first time in a couple of years.
My Dash A/C will not come on.
Power at the dash switches, but not to the A/C pump clutch.
Can someone tell me where the fuse or circut breaker is for it?
E mailing me direct would help, since we are leaving early Monday morning.
It's 111 here today, in Az.
Thanks: Bob
Unclebob9@Gmail.com
Bob, Several reasons for AC to not operate.
Start with refrigerant charge, if low the low pressure switch will keep compressor from operating.
Also check sight glass at accumulator ( if you have one ) should see only a few bubbles with compressor running.
Locate the freeze stat near the evaporator, should have two wires, jump these wires and compressor should run.
On my 95 the compressor relay is located on the same panel with the isolator, jump or replace it and compressor should run.
Gary B
Hi Bob,
Good to see you posting. I hope all goes well with fixing the a/c. I'm sure the group will help you. Do you still have the place in San Fran?
Raymond
12 positive power probably comes from: large front breaker panel to
dash A/C temp switch to
compressor & condenser fan relays on isolator panel high-pressure switch & low pressure switch near compressor then to compressor.
So if you use a volt meter you will quickly determine where the power stops. Read your wiring diagram. Shorting across high & low pressure switches will show you if there is low/no pressure or there is a switch problem.
Good luck, if all else fails drive with generator on to power both roof air conditioners. No reason you can't use your generator for long periods to keep cool.
Sounds like checking things out a month before a big trip has merit.