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I've been going round and round with Airxcel tech support on this subject and am getting a bit frustrated with them, so I thought I'd drop the question here: I have a Coleman Mach roof A/C unit that's ~10 years old. It works well generally and is controlled with a mode selector switch as well as a manual thermostat dial. My unit has a simple, add-on heat strip which comes in handy for cool weather camping, and the heat function is activated by turning the mode selector switch to "Low Heat." The problem is that, when using the heat strip, the thermostat dial doesn't seem to have any bearing on its function—the unit just blows warm air constantly and always pulls about 12A, regardless of the thermostat setting and regardless of the ambient temp in the RV. That can get real toasty, real fast, in a tiny RV! And that is not how it was designed to work; the thermostat is intended to turn the heat strip off and on, in order to maintain a set temperature of course. The question is, "Why is it not working correctly?" If you look at the highlighted portion of the attached wiring diagram you can see that, in Low Heat mode, the hot/black wire is always connected to the Heater Plug. Then, when the thermostat is calling for heat, the white/neutral supply wire makes a connection to the blue wire, which is the other side of the circuit at the Heater Plug (in other words, it's designed to switch the neutral off/on, rather than switching the hot). I have tried completely replacing the thermostat, which didn't help at all. I then tried pulling the blue wire completely off the thermostat, left it dangling... and the heat strip still continued to burn merrily away! Bottom-line, it appears that the heat strip circuit is being completed via another path, bypassing the thermostat somehow and making it irrelevant. Which seems dangerous. How does this happen and what's the fix?

Hi All, I'm looking for a replacement upper control arm bushing for my 1991 Winnebago Warrior. The small local auto shops can't located them quickly, what should I be looking for and where do you recommend I have them serviced? I'm going to be up in the Boston, MA area from tomorrow and want to get the service done there. Thanks in advance. Nick

I found the owners manual for electrical control center, the 7200 series. 7200 Series Electrical Control Center Owners Manual.pdf

At long last, after replacing my plugs, wires, distributer cap, ignition coil, and fuel filter, I have discovered the cause of my Dolphin failing under load and idleing rough; the Idle Air Control Valve. Unfortunately, this part has been a booger to find. Does anybody have one for sale or know where I can locate one? Obviously, salvage yards are a good option, and I've been to a number of them, just haven't found a 22re with the part still in it.