Question about Honeywell Electronic Programmable Heat/Cool Thermostat - CT3300A100 Heater
If its in the cooling mode the ice is in both places. It freezes up inside first then works its way outside just usually not easy to see the inside ice because its incased in the coil box. This could be due to a lack of airflow ie dirty filter coil or closed dampers or low on freon. If its a heat pump and in the heating mode it could be a bad defrost control, lack of airflow across the outdoor coil or low on freon.
Posted on Sep 12, 2009
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Posted on Jan 02, 2017
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