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My ac unit

Why does my ac freeze up no matter what temp it is set on?

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Re: my ac unit

Air conditioners freeze up for one of 2 reasons, #1 restricted air flow, is the filter, /orthe evaporator (cool) coil clean?
#2 it is low on freon, causing the coils to be colder than they should be.

Posted on Nov 13, 2007

Re: my ac unit

Well there are a couple of other reasons for a "freezing" a/c unit, and that would be intermittent indoor blower motor failure, which is in a way could be considered restricted air flow.

Posted on Jan 28, 2008

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  • 107 Answers

SOURCE: ac unit only blows out

This sounds like a split system and not a window unit ? First check the outside unit known as the condenser and make sure it is running correctly by --- Check that fan is running on outdoor unit and listen to see if the compressor is running. If neither of these are running then it can be a loss of control voltage to the contactor, bad contactor or even bad capacitor. If nothing is running then turn off the power by using diconnect next to unit....then remove the side or corner panel that has access to the control compartment . Visually check that the contactor is pulled in so that the center section is pulled in to make a complete contact across the terminals for power to flow... look at capacitor and see if it is swollen on the top and if it is swollen then it must be replaced with exact matching numbers from an electrical parts or motor dealer. If everything still looks ok then you will need to contact a local company to troubleshoot the unit further.

Posted on Sep 01, 2010

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If i set the temp to low on my window air conditioner can it cause the unit to freeze up

Under some conditions, it could freeze up. High humidity levels can cause the coils to freeze. Not cleaning the air intake filter regularly, can also cause the coils to freeze. However, most window units can not be set below 65 degrees. But, in high humidity, it could freeze at that temp.

If you want to avoid the possibility of the coils freezing, operate a ceiling fan or other small fan as fast as comfortable. This keeps the cool air moving a generates a wind chill that fools your body into thinking it's cooler than it really is. Doing this will keep you from having to turn the AC way down and thus, save on energy cost.

I hope this has helped you and thanks for choosing FixYa.

Sep 08, 2011 | Air Conditioners

2 Answers

My A/C freezing its coils, while the fans keep running. The AC unit (outside) keep running and never stop caused the coils freezing. It doesn't matter when I turn off or set it to Cool position, the...

Sounds like the contactor in the condensing unit is stuck. That is why it will not turn off when the thermostat is satisfied. If the inside air handler is not blowing and the outside condensing unit is running, then this will cause the inside coils to freeze up rather quickly.
The contactor is located in the outside condensing uni in the electrical compartment.
If it is sticking it will need to be replaced.

Sep 07, 2011 | Air Conditioners

1 Answer

We have a Mach III coleman AC unit... a little

Sounds like the evap coil is dirty or its low on freon.

Aug 31, 2009 | Dometic Rooftop RV Air Conditioner

1 Answer

Ac freezing up

Most freezing is caused low refrigerant or temp control will not shut off unit if there is no humidity problem.
one or the other can be checked by an refrigeration tech.

May 01, 2009 | Ruud UBHC Air Conditioner

2 Answers

Furnace runs on heat, air conditioner does not

If you have a Gas furnace in the Attic then the answer is yes. The outside condenser will not run if in fact you have a gas furnace.

Feb 11, 2009 | Ruud Central System Air Conditioner

1 Answer

Duo Therm AC not working

If unit was freezing up the air flow would normally stop, until the unit is turned off and allowed to thaw. I suspect evaporator blower may have a worn out belt, or compressor is shutting off due to control or internal overheat. What is the age of the unit?

Aug 06, 2008 | Dometic Rooftop RV Air Conditioner

1 Answer

Penguin AC cycling

Did you try contacting Dometic directly, to speak to a technical assistant. ( )

Jul 09, 2008 | Dometic Rooftop RV Air Conditioner

1 Answer

AC not producing cool air

If this is a newer system there will be a freeze sensor. It may be low on refrigerant. I would check the obvious things first. Are the filters and coils free of debris? Finally only set the temperature to your comfortable temp not lower as this can cause freezing too (generally not below 70 degrees)

Jun 23, 2008 | LG BG8000ER Air Conditioner

2 Answers

Ac unit freezing up

Either the coil is clogged, the fan is slow, or the freon is low... A solved rating is great motivation to continue giving priceless advise........

Oct 03, 2007 | Samsung AW0603B Air Conditioner

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