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Old 08-07-2015, 08:07 PM   #1
Junior Member
Join Date: Aug 2015
Posts: 11
Basement A/C Cools To Set Temp Then Shuts Off & Won't Restart

Hello all. I'm new here and thought I'd start things out right by joining a Winnebago specific forum to seek a little help from time to time as problems arise. Hopefully I can help others in return too.

I just received my 2002 35U Adventurer this week which has been an extremely hot week in the AR river valley.

The delivery driver (I'm packing to move 2,200 miles and couldn't get away to pick it up) mentioned the dash A/C did not work but he ran the generator and the basement A/C worked fine.

I'm taking the coach to a very good truck/motorhome shop for the dash A/C repairs on Monday however I found a problem with the basement A/C. This shop works on the Ford F53 chassis and Ford components but won't touch the basement A/C.

The delivery driver did not know about it because he drove it 10 hours a day and got a motel room at night (does not believe he should be using the owner's coach for eating/sleeping or use the toilet).

So the basement A/C runs fine when turned on at the thermostat in both auto & manual. It seems to be blowing really cold air and will drop the inside temp from 96 degrees to 72 degrees in about 7 hours. This is with all windows covered, both slides out and it's parked in the sun.

The problem is once the coach cools off and the A/C shuts off the A/C will not come back on as the inside temp rises again. Only the blower fans come on. No compressors will run.

It's the same results on generator and shore power. I checked circuit breakers but nothing tripped.

I flipped the 2 circuit breakers off, waited a few seconds and flipped the breakers back on. The blower fans fan started immediately and the compressor kicked on within a few minutes.

The unit ran fine for 7 hours when the low temp setting was reached at the thermostat and it shut off. Compressors and the air blower.

Temp goes up from 72 to 74, 78, 82.............No A/C.

I'm thinking it's a thermostat gone bad but I'm no HVAC mechanic. I have been reading up on how important it is to keep the basement units clean so I planned on having it maintenance serviced once I get out to CA.

Anybody here experience this pattern with their basement A/C??

When it runs, it's cold. It just won't start a second time when needed without flipping the circuit breakers off and back on. Kinda strange to have to "reboot" the air conditioner.

Also note turning it on and off at the thermostat did not restart the compressors. Only the breakers.

Any and all suggestions are welcomed.

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Old 08-07-2015, 08:41 PM   #2
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Winnebago Owners Club
Join Date: Sep 2013
Location: Ft Worth texas
Posts: 820
Basement A/C Cools To Set Temp Then Shuts Off & Won't Restart

Install new start compositor on compressor. It gives you the kick it needs to start. They wear out and get weak. Just look up your model and find it and order very easy to install.

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2003 Sightseer 33L
Ford F53
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Old 08-07-2015, 08:52 PM   #3
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Join Date: Aug 2015
Posts: 11
Thank you !!!! I didn't know they had such a capacitor and now I know what the round tin can is I found in one of the kitchen drawers !!!!

Don't know if the one I found is any good but I'll buy a couple new ones and cool off.
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