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Old 08-03-2014, 05:44 PM   #15
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SteveS, Thank you so much for taking the time to run the tests and report back with what you were able to find out. This helps to give me a starting point in diagnosing my buddies air conditioning problems.

As it turns out, I think he has the same year and model Alpine as yours. He has been plugging his power cord, using adapters, into a 15 or 20 Amp standard house plug outlet in his garage and running either the front or rear air conditioner for several years now with no problems. Now for some reason he can only run the rear air and when switching to the front air he gets nothing. Now, when he starts the generator, he can run either the front or rear or both.

I'm leaning towards a problem with the transfer switch and from what I've read on this forum can and will eventually go bad. I have never had to get into diagnosing transfer switch problems, so I'm kind of at a stand still.

I hate throwing parts at a problem, but it appears that this must be the bad link.

Thanks Again,
Sammie ( Steve ) Also
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Old 08-03-2014, 06:22 PM   #16
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The purpose of mulitple dogbone adapters is to eventually get 15/20/30 amps from a single pole spread across the two legs that powers the coach when the power cord is plugged to 50 amp or the genset is running [front and back A/Cs are on seperate legs in the coach]. It could be that the dogbone he is using is defective and is only providing shore power to one leg of 2-pole 50 amp cord. Wild guess--but I would first confirm you are getting shore power to both legs via the dogbone[s] ...beats tearing the transfer switch apart.
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Old 08-03-2014, 06:46 PM   #17
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Quote:
Originally Posted by Old Scout View Post
The purpose of mulitple dogbone adapters is to eventually get 15/20/30 amps from a single pole spread across the two legs that powers the coach when the power cord is plugged to 50 amp or the genset is running [front and back A/Cs are on seperate legs in the coach]. It could be that the dogbone he is using is defective and is only providing shore power to one leg of 2-pole 50 amp cord. Wild guess--but I would first confirm you are getting shore power to both legs via the dogbone[s] ...beats tearing the transfer switch apart.
Old Scout, Now you've shed some light on an aspect of my buddies problem that I have not even considered. I can't wait to call him and possibly be able to solve this mystery.

Thanks So Much,
Sammie
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Old 08-03-2014, 07:49 PM   #18
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No problem--since everyting seems to work on 50 amp shore power or the genset; it points you to the dogbones as a possibility. Hopefully its that simple--many of my issues are....
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Old 08-04-2014, 05:14 PM   #19
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Sammie - Yes, I agree with Oldscout. Had I known the complete story initially, a bad adapter would have been my first guess...I have seen it before. Anyway, good information from the tests are now available and can hopefully help with future questions/problems.
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