Question about Daewoo DSA-122L Air Conditioner

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After a few hrs of cooling it began to ice. What's the problem?

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Hi I don't know how old the unit is, but what causes the indoor unit to ice up, can be a number of things. The coil or filter up top at the indoor unit being dirty. If the coil is dirty, the blower motor can't blow enough air across the coil and will cause it to ice over. If the coil is dirty, it will need to be cleaned. If not, I would have to say that the unit is low on freon, you have a leak somewhere. You have developed a small leak and this will cause the indoor coil to ice up very quickly. On these split systems, the freon lines are screwed together and not brazed with a torch causing this to be a weak link in the system. The system is under high pressure. Anytime you have 2 freon lines connected together by threaded connections, there is a good chance they will leak over time, or right away if not done properly. I would take a good strong light and remove the cover indoors to check the condition of the coil. If it is clean, and the filter is clean, make sure you have only the fan on and the ice has melted off before you do this, and feel the force of the air coming in from the blower motor. It should be nice and strong. If this all appears to be clean and alright, then I would say you have a leak and you will need to call out a tech to do this type of job. This is all that you can do at this point. If the unit is new, lets say less then 6 months, it should still be under warranty. You would know this. I hope I have been of help to you on this, as I see this everyday. Please don't forget to rate me, and please keep me posted on the outcome. I will be here if you need me.
A/C, & Heating Contractor

Posted on Oct 02, 2010


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