Air Conditioner Cuts Out After 2 Minutes
I have a Dometic/Duo Therm air conditioner, model 630035.321. I think it is referred to as a Penguin. The unit starts fine and cools, and using the heat pump heats fine, but only for about 4 minutes. It then shuts down, and just hums. When this happens, I shut the breaker off as it doesn't trip by itself. The same thing happens if I just run the fan on the unit.
I have replace both capacitors, and it has made no difference at all. Everything is clean and all cooling fins are clear as I wash them out twice a year.
While testing the unit, I have observed the motor getting extremely hot. I am guessing over 200 degrees as I can only touch it for a second. The motor spins very freely by hand, and makes no noise at all when it spins. I think all the bearings are fine, but I believe it is getting way too hot and there may be some type of thermal protection that shuts it off when it gets too hot.
Any thoughts on where to check next, or just try a new motor?
2017 F-150 Toad