Rv Air Conditioner Evaporator Coil Freezing Up

The reason your evaporator coils can freeze is that in addition to cooling the air inside your home air conditioners also dehumidify it.

Rv air conditioner evaporator coil freezing up.

The positioning of the control switch is crucial to proper operation. You can fix this problem from inside your rv and best of all you do not need any tools. It is also a recipe for several other unpleasant problems with your ac like dirty sock syndrome. The majority of rv a c freeze ups are caused by low airflow usually due to dirty evaporator or condenser coils.

You can only see it from inside your rv so there is no need to go up onto the roof and take the cover off the air conditioner. Normally this isn t a problem because the condensation droplets fall off the coils into the drip pan. The coils in your air conditioner unit evaporator coils and condenser coils need to be cleaned regularly. You are running your air conditioner when the outside air is below 62 degrees.

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. When these become dirty gather lint or lots of dust gets on them they stop working or they can freeze. It is the water running down that coil and into a drain pan that drips off the roof of your rv when the air conditioner is running. That is the evaporator coil and it gets very cold so cold that it approaches the freezing point of water.

Your air conditioner is low on freon. Check your evaporator coil if your air conditioner is freezing up. First a little bit more about what. Liz all duotherm roof units have a freeze control device specifically mounted on the evaporator coils.

Have someone check for the proper positioning of the control switch and that it indeed measures no continuity when the ambient temperature is over 69 degrees. Rv ac evaporator coil freezing up it is the evaporator coils that are responsible for cooling the hot air in your rv. A dirty evaporator coil the inside one can cause a lack of airflow across it dropping the temperature and causing your air conditioner to freeze up. They pull the water out of the air which makes condensation that builds up on the coils.

There are four main reasons your air conditioner may freeze up. This happens because the refrigerant in the evaporator coils can no longer absorb the heat needed for the coils to warm up. Insufficient airflow across your air conditioner s evaporator coil. When this situation arises you will need to remove the inside cover of your air conditioner and start cleaning.

More likely it will help you take immediate steps necessary to prevent more damage while you arrange for professional hvac service to repair the problem.