Roof AC shuts off with engine running
Hi folks, Here's one that has been puzzling me for a while, and today I decided to trace down the cause -without much luck, but I'm getting closer. I have a 2002 Bounder, with two roof AC units. If I...
Forum Discussion
Well here's where I am this morning.
My batteries should be fine, this set is 1 year old, and this AC problem occurred with my old set as well. I have always assumed that while on shore power, the batteries power the house lights and the converter charges the batteries, since there is no 'flicker' in the 12V lights when shore power is plugged in, and the batteries always charge up under shore power.
I went out this morning and tried everything in reverse. While under generator power and the engine off, I turned on the front AC, which worked fine. I then turned the ignition to 'on' without starting the motor, and the AC stayed on. So it's just an engine running problem, not a 'ignition on' problem.
So, I turned off the AC, started the engine, turned on the front AC, which as usual stayed on shed red, and the compressor refused to operate. I then switched on the rear AC fan only, which again started up the front AC.
So, if the relay for the front AC is now operating, and allowing the front AC to run, then turning off the rear fan should allow the front AC to keep operating. Not a chance. I would suspect the thermostat, but again that was recently replaced, and the old one was the same before the heat went out at Tgiving in freezing weather.
I'm looking for the breaker to the converter, but that breaker is apparently not marked, so I have to do some wire tracing to see if the converter is affecting anything. Thanks for the ideas!
My batteries should be fine, this set is 1 year old, and this AC problem occurred with my old set as well. I have always assumed that while on shore power, the batteries power the house lights and the converter charges the batteries, since there is no 'flicker' in the 12V lights when shore power is plugged in, and the batteries always charge up under shore power.
I went out this morning and tried everything in reverse. While under generator power and the engine off, I turned on the front AC, which worked fine. I then turned the ignition to 'on' without starting the motor, and the AC stayed on. So it's just an engine running problem, not a 'ignition on' problem.
So, I turned off the AC, started the engine, turned on the front AC, which as usual stayed on shed red, and the compressor refused to operate. I then switched on the rear AC fan only, which again started up the front AC.
So, if the relay for the front AC is now operating, and allowing the front AC to run, then turning off the rear fan should allow the front AC to keep operating. Not a chance. I would suspect the thermostat, but again that was recently replaced, and the old one was the same before the heat went out at Tgiving in freezing weather.
I'm looking for the breaker to the converter, but that breaker is apparently not marked, so I have to do some wire tracing to see if the converter is affecting anything. Thanks for the ideas!
