Dometic Air Problem, Looking for Help

[ImagineIF]

One of my Dometic 15K BTU Heat and Air units keeps tropping the circuit breaker. The breaker trips even if the unit is in FAN ONLY mode. I assume this would mean the compressor is not the problem. The fan motor spins freely. I checked the run and start capacitors and both test okay (meaning my meter says the capacitor values are in spec). I replaced the start capacitor given it appears these are the most common problem. Still no luck.

Any ideas from those much smarter than I?

Thanks,

Gil

[Jambonee]

Try replacing the breaker. I just replaced one on my friends mh doing the same thing. They do get weak with age.

[ImagineIF]

Quote:

Originally Posted by Jambonee Try replacing the breaker. I just replaced one on my friends mh doing the same thing. They do get weak with age.

Now that's something I never considered. Given the fan only draws 3-4A, that would be one bad 20A circuit breaker.

Thanks!

[Jambonee]

It may or may not be the problem, but you will have a new breaker. Let me know if it does the trick.

[Rodneykrantz]

Tighten the wires on the breaker they may be loose that will cause it to trip from the heat a loose wire will make the breaker get hot and trip

[ImagineIF]

CW says it's the compressor. Strange given it happens even when the unit is on fan only. Anyway, a replacement is supposed to be on a truck. The CW at Lazydays stocks AC units up to 13,500 BTU and none with heat pumps.

Thanks,

Gil

[Triker56]

Did you have CW sign a contract, that if the new replacement trips the breaker.
They will put your old AC back on at no labor cost to you.

Doesn't make sense if on Fan only, it trips.
Compressor is not even in the mix then.

May just be a short in the $150 fan motor.

Only 3 years use out of a AC?
That's real bad luck.

[smiller]

Quote:

Originally Posted by ImagineIF CW says it's the compressor. Strange given it happens even when the unit is on fan only.

That really doesn't make sense. Out of curiosity, did you try replacing the breaker? Might be worth risking $20 to possibly save the cost of a unneeded replacement A/C. Or as mentioned above it might just be a short in the fan motor winding. I would ask the CW tech how the problem is being caused by the compressor when the unit is in fan-only mode. If he gives you a clear and reasonable answer then great, but if he mumbles and stumbles (more likely I think) then...