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The outside unit will not defrost and a thick layer of frost will build up, rendering it innefective.

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14y ago

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When using heat why would ice up on your central heating unit?

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What component controls the operation of the electric defrost heater and the hot gas solenoid?

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What is wrong with your central air and heat unit when it has ice on it when running the heat?

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When i turn on the defrost no air seems to go the windshield?

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