AC unit freezing over?

Question

Obviously this affects the way it runs.... the strength of air flow and coolness a little.

I have a wall unit... not a window... but they are similar, you know... not central unfortunatly.

What causes this?

What can I do to prevent it?

And is there something wrong w/ my until that would need fixed b/c of this?

thanks so much in advance!!

Answer 1

T

You will have to have someone come out and top off the freon on the unit and check it out.  Shouldn't be too expensive.

Answer 2

Only two things cause this.Low airflow which can be many different things or low refrigerant.A defective metering device also sometimes causes this but not as often as the other two.Where it says "heat cool off",put it to off on the thermostat.Where it says "fan on auto",put it to on.Run it this way for 30 minutes to an hour.Then put It back to normal operation.Set the temperature on 75 and "cool" and the fan to "auto".It will work for a while till it freezes over again.

Answer 3

poor air flow thru condenser coil,thats what cause to freeze up.You might have to check for dirty air filter,bad in door blower motor or dirty condenser coil..

Answer 4

if the evap coils or the filter is dirty then it can colllect ice,,,is that what you are writing about?

Answer 5

Make sure all the registers in the rooms are open all the way.

Clean the outside unit with the garden hose. If this doesn't work there is a good chance the unit is low on freon. Call a serviceman.

Answer 6

if its freezing up and the filters are clogged, clean the filters and you should be good to go.

if not, call repair man from reputable company.

Just cause it froze up doesn't mean it needs refrigerant