yourpcgeek49

Thanks everyone for the comments and thoughts. Before starting the A/C the line voltage at our whole house power protector reads 123 V, under load it hovers around 115 - 116 V. Yes, I am using a clamp on amp meter at the breaker box clamping on the AC lead.

As I said, it would run for several hours in the morning when the temperature is only 85 - 95 (only???).

The coils and fins are clean, but some of the fins have gotten bent (maybe a too low tree branch?) The original breaker was 15A, so I replaced with a new 15A.

If anyone has additional ideas, I'd be happy to hear them.

We have a Dometic 59516 rooftop A/C on our 5th wheel trailer. We are currently in Sedona, AZ, but the temp has been hitting 100+. Our A/C will run about 4 hours in the morning and then it will throw the circuit breaker. The compressor in the rooftop unit is way too hot to touch. I have replaced the circuit breaker (it was tripping at 13.5 Amps on a 15 amp circuit.) After letting everything cool off for a couple hours (still in 100 degree afternoon heat) I put a clamp on amp meter on the feed wire and turned on the A/C. It started at 12.5 Amp and gradually increased to over 17.5 amps, then the breaker popped.

Is my compressor shot? I would expect that the A/C "should" be able to handle 100 degree temps, even if it had to cycle on & off for thermal protection. Anyone got any great ideas?

If your old machine is otherwise good, you can buy a USB network card for $25 - 50.