Question about Coleman Mach III Air Conditioner

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My coleman Mach Rv air conditioner with built in heat strip keeps tripping it's internal circuit breaker when running for any length of time. Just replaced heat strip with new one experienced same issue. I ended up with the fan continuing to run but only cold air comes out of the vents! When I removed the old unit and reset the circuit breaker it too worked again. Have no idea what is causing this to happen. The airconditing part of unit works just fine??? HELP! Ron

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There should be an overload protection device in series with the low voltage wiring(t-stat wiring) Is it resting on the heat strip or too close to it? It is a saftey device to shut off the heat strips if the fan quits or a fire in the heat strip section. check that or by pass it, if it stays running then ur thermal protector is bad, couple bucks at the parts house.

Posted on Nov 06, 2010

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