Onan 7000/ac

[Carolinamobile]

I have an Onan 7000 with 3780 hours. About a month ago the generator would start with no power. We changed the brushes and transfer switch and it was fine. Last week my ac started tripping the breaker on the generator and the compressor would turn on and off. Today, with the ac on the generator would start sputtering and stalling but no flipped breaker. Any idea what’s going on? I don’t know where to start.

[Kpackpackkelley]

MrWizard wrote:
Turn off the A/C
Get some other loads to run from the generator,
Electric heaters, air compressors, coffee maker , water heater and fridge on electric

Load up the generator with as many loads on different circuits as possible

Does the generator handle it ?
If so you have an A/C problem

Good advice and I’ll add a clamp on ac multimeter and check you starting amps when ac runs and the compressor kicks in.

[MrWizard]

Turn off the A/C
Get some other loads to run from the generator,
Electric heaters, air compressors, coffee maker , water heater and fridge on electric

Load up the generator with as many loads on different circuits as possible

Does the generator handle it ?
If so you have an A/C problem

[Carolinamobile]

Yes, that’s what I’m trying to figure out. I’m assuming A/C but not sure where to start in my search for the culprit.

[MEXICOWANDERER]

Start by finding out WHICH OF THE TWO is at fault