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Old 09-01-2014, 10:14 PM   #1
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Possible Air Conditioner Issue...Need Help!


I've got 2 A/C units in my house (one in the basement, one in an upstairs attic).

I had an issue with an electrical outlet, that was not on the same circuit as my A/C, which might have caused an issue for me.

The outlet blew one something was plugged into it. The breaker popped. I had a buddy who's an electrician come over, and he flipped the breaker on. The outlet blew again, so we immediately shut off the breaker (replaced the outlet, etc).

However, when he flipped the breaker on (with the bad outlet still in it), my whole house sort of buzzed for a split second, and the A/C unit which is in the basement utility room made a weird mechanical sound (it's the best way I can describe it). It was just a quick bang/mechanical noise, and that was it.

So later in the day I went to turn on the circuit breaker for the replaced outlet, and noticed water on my utility room floor coming from the bottom of the A/C unit. I popped off both covers, and I could see ice on the coils. It was the ice melting that caused the water on the floor.

Did that other breaker someone cause damage to my A/C (they're not on the same breaker, each of the A/C has it's own dedicated breaker).

Was this maybe just a one time thing and everything should be OK? (the AC does seem to be working fine).

I've read online that the ice might be condensation from warm air entering the unit....but nothing in the unit/seals has changed. Hasn't been opened, etc.

Anywhere else I should check for "damage" that might be causing this?

Any help is appreciated!

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Old 09-01-2014, 10:50 PM   #2
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Possible Air Conditioner Issue...Need Help!


Is this a central air or window air?

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Old 09-01-2014, 10:54 PM   #3
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Possible Air Conditioner Issue...Need Help!


Sorry for not clarifying. Both are central A/C units. (York)
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Old 09-01-2014, 11:00 PM   #4
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Possible Air Conditioner Issue...Need Help!


Sudden icing up of unit is normally caused by lack of airflow acrossed the A coil,either from clogged up filter or blower motor not running.
Is the blower running,is filter really clogged up?
It could also be really low on Freon,but since it just happened when you were having electrical issues Im going to lean towards the blower motor.
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Old 09-01-2014, 11:06 PM   #5
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Possible Air Conditioner Issue...Need Help!


Yes, the blower motor is running. In fact, it's blowing right now.

The filter looks brand new. I replaced it 2 or 3 months ago, and just checked on it. Still looks new.
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Old 09-01-2014, 11:48 PM   #6
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Possible Air Conditioner Issue...Need Help!


if blower is running, have someone check refrigerant pressures and temps. To verify unit is properly charged... One thing to keep in mind is that the blower maybe failing and working intermittently where it runs fine for a while then stops.
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Old 09-01-2014, 11:48 PM   #7
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Is the unit still iced up?
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Old 09-02-2014, 09:55 AM   #8
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Possible Air Conditioner Issue...Need Help!


Check to be sure the outdoor unit shuts off when the thermostat is satisfied and is no longer "calling" for cooling. A stuck or welded shut contactor will keep the outdoor unit running all the time. Without the indoor unit blower motor in operation there is no air flow and the evaporator coil can freeze.

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