Troubleshooting an Advent AC That Runs For a Few Minutes Then Cuts Off But the Compressor Runs Still

Question:

I just installed 2 advent ACACDOM150 in replacement for duo-therm 59136.521 with the electric kit 3106481.009 both AC units come on but only run for a couple minutes then the fans shut off and the compressor stays running. Could this be due to incompatibility of something?

asked by: Shane

Expert Reply:

You have all the right stuff to make the upgrade, but to me It sounds like your Advent Air Replacement RV Air Conditioner for Dometic Setup # ACDOM150 is short cycling. This typically happens when the thermostat reads the temperature wrong, which can be caused by a couple of things.

If you notice that air is blowing directly into the thermostat, that is likely what is causing the issue and you'll want to re-direct the air away from it. It could also be caused by a frozen coil, which happens generally when it's humid, and when combined with the cold it will cause the coil to freeze; but this this can be fixed by just running the fan by itself.

The very last thing I can think of if everything else checked out is that you might have a faulty thermostat, but that would need to be verified by a certified technician.

expert reply by: Bryce D