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Low airflow or refrigerant or both.

Is your a/c a Heat pump or a straight a/c. If it is a heat pump this could be a normal operation of the defrost cycle.

My answer to this question was thumb down. That answer should have been a thumb up. It was an excellent question and I agree with the answer given about low airflow or refrigerant. I just had a unit did and it was a very small, small hole in the Evaporator Coil.The Evaporator coil was replaced and the unit works excellent.

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16y ago
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Q: My central unit has develope frost.?
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