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Old 07-28-2016, 11:54 AM   #11
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wow some mis info posted . if your freezing up check the location of your freeze sensor . it has eiither fallen out or is not positioned in the correct location . should be low on the coils and pushed in enough to touch the coil . if it's the puck style then it needs to be clipped to the coils on the end of evaporator . low Freon will not cause freeze up and no way to add refrigerant . no need to run fan on high . again look at freeze sensor and or very dirty coils blocking air flow or both .
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Old 07-28-2016, 12:09 PM   #12
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Keep the fan on high.

The lack of airflow across the evaporator is more than likely the problem.




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Old 07-28-2016, 12:49 PM   #13
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Bama Rambler and Northstar are spot on. I know because this happened to us in 2013. Turbs advised we check the freezer coil & Yup! there it was dangling by the wire.


I am almost positive this is your problem
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Old 07-28-2016, 01:21 PM   #14
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Pull the Interior cover off a see if a white wire coming from above is attached to the ACCOUNT fins. This wire acts as a thermostat and doesn't allow the unit to freeze. If not you will have to have installed.
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Old 07-28-2016, 01:29 PM   #15
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Air flow will DEFINITELY cause it to freeze up!
When I had one a/c I would close vents off to get more air in the bedroom and then my a/c would freeze up.
If I left all those vents open it would not freeze.

I fixed that by adding a second a/c

Run your fan on high in high humidity


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Old 07-28-2016, 02:16 PM   #16
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Sounds good everyone and thanks! I'll take some time and look into the freeze sensor, if it's not simple and obvious I'll run it up to the dealer for a warranted repair.

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Old 07-28-2016, 07:57 PM   #17
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Run fan on high during hot, humid weather. At night turn fan to auto. This will keep air flowing over the coils and help prevent them from icing up. Once they ice up, your A/C will not cool. You can't add Freon to an RV A/C the only solution is to replace the A/C unit.
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Old 07-28-2016, 08:14 PM   #18
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Quote:
Originally Posted by tomrob1161 View Post
Run fan on high during hot, humid weather. At night turn fan to auto. This will keep air flowing over the coils and help prevent them from icing up. Once they ice up, your A/C will not cool. You can't add Freon to an RV A/C the only solution is to replace the A/C unit.
before you go and replace an AC for icing up it would be best to address why it's icing up #1 reason freezer sensor fell out of place or was installed incorrectly in the first place or and not likely the freeze sensor is bad #2 reason is blockage of air flow , dirty coils full of dust . #3 reason is the area between supply and return is allowing the cold air to go right back into the return side . That's pretty much it as to why you have freeze ups . the freeze sensor will shut the compressor down when it senses freezing which is why you want it low on the coils and as close to and touching a coil between the fins . the fan will still run and the sensor will turn on and off the compressor as needed .
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Old 07-28-2016, 08:41 PM   #19
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Aquaman is right on the money. Check the filter, intake area and outlets, any restriction will slow the humid air down and the moisture will freeze on the coils. Running on Fan/Air there is enough time to defrost the coils, this is just away around freeze ups.
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Old 07-28-2016, 09:30 PM   #20
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When you have the filter and grate off look to see if the return air divider hasn't came loose allowing cold air to mix with warm return air.



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