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Is this normal AC operation?

mick2268
Explorer
Explorer
OK, so My 29'Cougar/Dometic has a history of AC not doing well, by that I mean struggling, and often freezing up. However, I spent some time this winter re-taping the ducts up in the unit and thought I had it fixed. The main problem up till now has been freeze up, yes, even with it on high and all vents open for full flow.

Ran it 6 hours yesterday, and NO FREEZE UP...Yay!! But thermometer still showed over 80 in the unit. Here are the specifics.

It was in my shop, and I turned it on around noon. So no sun, but it was pretty warm in there, especially 12' high near the unit. After six hours, it showed no signs of freeze, water was still dripping so it was still pulling moisture out. I showed 74 degrees coming out of the main vent, and showed at least 95 outside at the unit; maybe even 100 up on top.

But it seems to me she should be blowing colder air. The only thing left I can think of would be that the Freon is low. I know that it's a sealed system, and a pretty new unit, but is there anything else it could be? Cold low Freon be a possibility? My thought is that if I had a leak, it would be empty by now, but what say you all??

Thanks...Mick
15 REPLIES 15

Ed9824v
Explorer
Explorer
I would be curious of the temp of the air going into the return by the filter and the temp. of the air out of the ducts. Should see close to a 20 degree differance.
Ed So.Calif
1950 Ford F1 street rod
1968 Baha Bug with 2.2 ecotec motor 170 hp, kingcoil
2000 National Sea Breeze 5th wheel trailer
1998.5 Dodge 2500 4x4 Cummins,4.10 gears,turbo,trans,injectors,oil cooler,lockers,edge EZ, 35" BFG's, air dog lift pump etc.