I have a new 2017 RV with a Dometic 15,000 BTU air conditioner. The AC is equipped with a heat pump. The heat pump was working great. Now the heat pump trips the breaker after 3-4 hours of use.I had a 2008 RV with a 15,000 BTU AC and a heat pump that gave me the same problem. Had it checked out a number of times but no one could fix it permanently.Anyone else out there have a similar problem? If so were you able to get it fixed? If so, what was the fix?Thanks in advance for any suggestions on how to fix the problem permanently.

What kind of power are you plugged into?

Plugged into 50 amp. That's the only way I run the heat pump.

A prime suspect would be the run capacitor. Could be other things of course like weak breaker, low voltage, bad compressor, etc.

What is the voltage coming into the rig after several hours. Measure on both legs.

To have 2 units 10 years apart experience the same EXACT problem is way out there. What is the outside temp when it is running? Doug

AC with heat pump problem???? | Good Sam Community

SaltiDawg
Explorer
Oct 04, 2017
In a residential or commercial installation, you do not have a "AC equipped with a heat pump," but rather you have a Heat Pump. It typically has a "reversing valve" which serves to allow you to cool the inside (A/C) or cool the outside (Heat inside.)

Assuming it is the same in the OP's unit, it begs the question as to whether when cooling the inside with a high demand does the same tripping occur after 3-4 hours?

Remember, I'm not a RV person. Just trying to help. :D
wolfe10
Explorer
Oct 04, 2017
How clean are the evaporator and condenser. Wonder if high head pressure is involved.

Yes, that is probably third on my "suspect" list with capacitor and voltage being more likely.
dougrainer
Nomad
Oct 04, 2017
To have 2 units 10 years apart experience the same EXACT problem is way out there. What is the outside temp when it is running? Doug
Ivylog
Explorer III
Oct 04, 2017
What is the voltage coming into the rig after several hours. Measure on both legs.
road-runner
Explorer III
Oct 04, 2017
A prime suspect would be the run capacitor. Could be other things of course like weak breaker, low voltage, bad compressor, etc.
golf_bears
Explorer
Oct 04, 2017
Plugged into 50 amp. That's the only way I run the heat pump.
akrv
Explorer
Oct 04, 2017
What kind of power are you plugged into?