Unit turns on and hums like it wants to work but does not force air and after 3-5 minutes trips the breaker in my camper.

The breaker

You got a bad wire to the camper!

Have you checked breakers in panel, to make sure one isn't tripped?
What type, year camper is this on?

Hi!!

It seems like the blower motorr is not kicking in. Turn breaker OFF, remove the grill, check that electrical connections are nice and tight, and turn breaker back ON, start unit and see if evaporator coil is gatting cold, if so, Turn Breaker off, remove blower motor capacitor and test it, if capacitor OK, blower motor needs to be replaced.

Good Luck!! Rate this Post!!

the air filter may be dirty, if thats not it it is the condinser burned up and not pumping freeon

Sounds like start relay for compressor may be faulty.

hi there,
ac not cycling off,the thermostat is not working
have to replace a new one.havve anice day fix my rate thanks

Hi, If the motor hums and trips breaker it is froze up, or shorted out. When they lock up like that, they draw a lot of amps which in turn trips the breaker.There is not much you can do but try and remove this motor and replace it. It may be worth it as I am sure the price tag on this heater is not cheap. You can try and get to the motor and see if maybe it is just stuck, as I have had this happen before and get it to work again. More then likely, it has died out on you. Please let me know what you find and keep me posted.
Sincerely,
Shastalaker7

this could be a bad capacitor,a shorted wire or bad run windings in the compressor.

By the main breaker in the camper, do you mean the main 24 or 12 volt breaker, or the incoming 120vac breaker? Is it tripping the breaker in the camper, or the house? If it is tripping the breaker inside, i would look for maybe water damage, rusty components, maybe have an electrician come look at it, not worth going out away from home, and that problem ruining your vacation! Does this unit have a generator set? Try disconnecting the generator too. Hope that helps!