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I can hear the A/C compressor kick on when on A/C.
I can hear the motor hum when just on Fan.
So far this has only happened in the drive way - hooked up to a 120v, 20AMP with a 10 foot extension cord.
I know that could keep the A/C from working, but when it works, even it the drive way, it's works fine.
I had this to the dealer for a week, they could not reproduce the problem.
I know that is low AMP for the A/C, but it seems like the fan should work no matter what?
As mentioned, I car hear the fan motor and A/C compressor hum. So, the switch is good and I don't 'think' power is the issue. The last time this happened, I got on top my rig and checked the fan (made sure it turned), and it seemed fine too.
Now I might get up in the morning and check it again, and it might just start working.
Could be a dead spot on the fan, I have also seen a wasp nest that would stop a fan from starting only when the coach was parked at a certan angle. But more thank likly there is a voltage problem or faulty contact in the control relay. good luck