Author Topic: central air unit line freezing  (Read 5514 times)

Offline plan1

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central air unit line freezing
« on: August 25, 2008, 01:18:45 AM »
My unit continues to freeze up. the freon line freezes. unit stops getting cold . I had freon added a couple of days ago. Any suggestions :embarassed:

Offline Big Dave

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Re: central air unit line freezing
« Reply #1 on: August 25, 2008, 07:33:04 AM »
My unit continues to freeze up. the freon line freezes. unit stops getting cold . I had freon added a couple of days ago. Any suggestions :embarassed:


this will be a a air flow problem up filter-stopped up A coil-Dirty blower and so on. That is provided that it is a existing unit that has worked in the years past. If its a new install a oversized condensing unit will do the same thing.

Offline JWWebster

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Re: central air unit line freezing
« Reply #2 on: August 25, 2008, 08:46:21 AM »
Your inside coil is probably dirty. This causes the freon to liquify and freeze the slimey wet buildup on the coil. Removing the slime and spraying on a good non rinse foaming coil cleaner will probably cure the problem.The air filter needs to be clean also.
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Offline Icehouse

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Re: central air unit line freezing
« Reply #3 on: October 23, 2008, 09:27:20 PM »
If your coils and filter check your "TEET" Target Evaporator Exit Temperature.
This is done by using two thermometers. Place one in the return air grille and the other at the first register comming off the air handler.
You are looking for a 20* F difference.
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