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Coils freezing up on a/c unit - Heating & Cooling

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Hello quincy4,

a lot of things to consider of coil freezing up, first as doc jhon has stated, could be the filter. check and clean it out.
another thing would be the evaporator itself, if it is dirty, the coils would freeze up too. that you need a service guy to clean your coil. they do have aluminum cleaners that they use to bring out the dirt in between the fins.
then there is this undercharge unit where in a partial of the coil only will freeze( the start of cooling tubes). not the whole evaporator.
with this problem, you need a qualified tech to do it.

tnx 4 using fixya,

drcool

Posted on Sep 27, 2008

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  • Master
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Hi thanks for the question i would check the air filter this is a must it has to be kept clean the only other reason is if your trying to keep the room too cold the unit.has to shut down to let that ice melt so if your trying to keep the room too cold it will never shut down don't try to get 68 degrees

Posted on Sep 27, 2008

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