Rv Roof Ac Freeze Up

If it fails to open and the temperature is above 69 degrees it needs to be replaced.

Rv roof ac freeze up.

This is true with the newer duo therm ac. Brand new rv ac freezing up. In all instances every effort is made to ensure the correctness of all content on the rv doctor website. Insufficient airflow across your air conditioner s evaporator coil.

There are four main reasons your air conditioner may freeze up. Your air conditioner is low on freon. This can also result from running an ac at a sufficiently low temperature for long enough. If your rv ac is freezing up at night it means that the night air is a lot lower than that benchmark.

This freeze control is a thermally activated switch of sorts that closes once the temperature of the evaporator falls below 49 degrees f. The coils in your air conditioner unit evaporator coils and condenser coils need to be cleaned regularly. Once closed it will reopen when the temperature rises to between 61 and 69 degrees f. You are running your air conditioner when the outside air is below 62 degrees.

A simple continuity test and temperature measurement should quickly reveal the status of your freeze control device. The way to solve this issue is to simply turn the air conditioner off when you go to bed and open the windows. If it fails to open and the temperature is above 69 degrees it needs to be replaced. The majority of rv a c freeze ups are caused by low airflow usually due to dirty evaporator or condenser coils.

So there you are on a blazing hot day with no air coming out of the vents and no compressor operation. It is possible that your new rv ac is built with a cold switch. A crow bet that the dealer finds nothing wrong with the ac. When the coil is iced over air delivery to the vents is blocked and if enough of the coil freezes up the freeze protector that serves to protect the compressor from operating with an iced coil closes or opens a circuit depending on which manufacturer s air conditioner is on the roof and the compressor quits running.

I believe this is a self inflicted problem caused by leaving the roof vents open while running the a c. If i m correct the a c pulled humid air in from outs. If either set of coils is dirty the air conditioner needs to work harder to cool the air and transfer heat out of the rv. You can prevent this by setting modest thermostat temperatures or 72 75.

If you set your thermostat too low the ac is going to blast chilled air which will inevitably lead to over cooling and condensation. Freeze ups can and do happen in high humidity.