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Coil froze up how do we recharge it - Dometic Rooftop RV Air Conditioner

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The only way to recharge an RV unit is to drill a small hole in the return line of the system and solder a schrader valve on the line. Once this is completed, you will need to pull a vacuum on the system for at least 12 hours, making sure there are no leaks. The only reason that your unit would need freon is because it has a developed a leak. If you can pinpoint the leak, then it may be able to be repaired and the system recharged. Careful of this however as it can get more expensive than a new upper unit costs.

Where you running the unit of low fan/cool mode when it froze up? This will often cause this to happen in the summer months due to the lack of fan speed at the condenser and the evaporator. Both fans are on the same motor.

Hope this helps.


Posted on Jul 03, 2009

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Clean the cond. & evap . first ,run fan on high at high temp.

Posted on Jul 04, 2009


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1 Answer

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