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Old 04-08-2010, 09:04 AM   #1
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Air Conditioning


I live in a trailor and the other day I opened the pannel to the coils and found that there was Ice "from condensation" an inch thick all around them. What causes this? Is it due to low coolant?

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Old 04-08-2010, 09:12 AM   #2
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Air Conditioning


What was iced...the indoor coil (evaporator) or outdoor coil (condenser)?

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Old 04-08-2010, 12:38 PM   #3
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Air Conditioning


The inside coils.
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Old 04-08-2010, 12:56 PM   #4
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Air Conditioning


The most common reason evaporator coils (indoor coil, A-coil) ice up is due to restricted air flow, usually caused by a dirty return air filter or because the coil's fins are plugged with dust and hair. If you've already eliminated these possibilities, then yes, the unit may be low on charge.

The only sure way to tell is to hook up a set of gauges and check the high and low side pressures.

Can you see any places on either the indoor unit or outdoor unit (condenser) where there are traces of oil? If so, you will have found a good indication of a possible refrigerant leak.
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Old 11-24-2010, 05:38 AM   #5
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Air Conditioning


Hi,
Evaporator Coils are a key part in a central heating and cooling system. In the warmer months when you need air conditioning, the air conditioning condensing unit compresses the Freon in your HVAC system and turns gas into a very cold liquid

Thanks,
with regards
---------------
Spam

Last edited by Ed the Roofer; 11-24-2010 at 01:43 PM. Reason: Spam
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Old 11-24-2010, 10:42 AM   #6
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The defrost cycle is not working most likely. Heat pumps defrost regularly to keep this icing from happening.
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Old 11-24-2010, 07:00 PM   #7
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Air Conditioning


Are the coils clean?
Over time dirt / grease / mould can build up in the fins
of the heat exchanger.
This can reduce the amount of air moving thru the heat exchanger
and they can then ice up.
Ensure there is good air flow thru the coils.
If not clean them with good soap and also bleach if there is
mould build up.
Check the air filter is clean.

I had a simulair problem,
after a good clean with bleach,
the problem was solved.

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Originally Posted by Sapper View Post
I live in a trailor and the other day I opened the pannel to the coils and found that there was Ice "from condensation" an inch thick all around them. What causes this? Is it due to low coolant?

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