Question about Dometic Rooftop RV Air Conditioner

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My jayco is 9 years old. now the a/c blows mostly hot. is it empty ? Can it be recharged.

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Could possibly be a low charge. Make sure all the fans are running. There should be one for the condenser and evaporator. Also see if you can tell whether or not the compressor is running. If the compressor is not running then it could be the capacitor for the compressor. If everything is running then you could get the refrigerant charge checked. I would get an estimate for this then price a new unit to see which is cheaper.

Posted on Jul 04, 2010

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1 Answer

I have recently had the air charged and it is full now it is blowing out hot air


Was it hot before the recharge?
Was it cold right after the recharge?
....and now it's hot again?
Could be empty again.
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More likely the recharge blew a o-ring and you have a leak. When your Cavalier was blowing hot air and a recharge fixed it that means it was low on freon which lets o-rings dry out, go back to the shop and have them leak test it. They use a pressurized dye to find the problem. If it's blowing it's not the cooling fan relay, they may have meant compressor relay but I'd have a leak test done first it's not expensive and easier that chasing unknown possibilities.

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