My a/c comes on and runs fine for 20-30 minutes, but when the compressor cycles it trips the breaker. I had an electrician check the current and it runs about 15-16 amps initially with the compressor on. When the compressor cycles it runs up to about 33-34 amps for about a minute then it stops trying to start the compressor for a couple of minutes then restarts the compressor at about 18 amps eventually dropping back to about 16 amps. I was wondering if this is a capacitor problem or a compressor problem.
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Check the capacitor. You probably have one capacitor that controls both the compressor and fan. If that isn't it, check the contactor and make sure that it pulls in when the thermostat calls for the A/C to come on. Also check the voltage on the line side and load side of the contactor. I have seen some with voltage on the line side but it wasn't making it to the load side.
The simplest answere to start is it' looks like the compressor is the ssue." Either it has siezed"or in my oppinion needs a proper household power to activate it. If the voltage drop on these units is a little below a certain value, it will not start and will burn out. Thats why i suggest a household power be tried first. I feel your generator is a little undersized. You will only know once you have applied household power.
I had a problem with my coleman mach 3 AC, we were at an RV park up at lake shasta CA and the fan would stay on but the compressor would come on for a few seconds and then trip off. It was the motor overload relay on the compressor that was tripping. the RV park was old and apparently the wiring to the panelboard at the RV park was too small, when you are drawing a lot of current there was too much voltage drop across their line, to make up for this the motor tries to draw more current and heats up the motor overload and it trips off. I solved this problem by buying an autoformer from Camping World, it senses a voltage drop and automatically boosts the voltage.
I am now having a seperate problem, the compressor is either locked up or has too much back pressure and trips off the service breaker when trying to start. The only solution I can see with my current problem is to replace the entire unit.
It is definitely with the compressor. It should more like you may have a weak winding in the compressor, you can a hard start capacitor (sp5 ) that will help the compressor on restart. Note that this is a last chance solution for a compressor.