Forum Discussion
aaron_o_
Jul 20, 2017Explorer
Bikeboy57 wrote:
Before you rewire the entire coach.......
If you measure the voltage at the transfer switch when the AC is trying to start, what do you get? 120+, dropped some when compressor kicked on but not super low, 110 maybe? I think lowest number I saw was like 107.
The point is that measuring there divides your issue into half. If it's OK, then the problem is between the xfer switch and the AC. If it's low, then measure at the gen output while starting the AC. Keep measuring at different points at the system until you find the low voltage instead of guessing at the problem. That's a good point, but I don't have a real good way to measure there as it's wire nutted. I guess I could test right at the generator, but it's hard to run from AC to front of RV to test. I'll have to get some help I guess.
Given the AC units run on shore and an external gen, your assumptions about the generator are valid. I just think it best to do the diagnostics with a voltmeter.Agreed, that's what I've been doing.
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