Question about Heating & Cooling
Hello, that code states that the limit switch is open on the Furnace, a limit switch opens when airflow is not adequate. Reason for this are dirty air filter, dirt on blower wheel, blower motor not running at proper speed, or blower motor not running at all. Anything that restricts the airflow over the heat exchanger will cause this switch to open. Let me know what you find and I will be glad to assist you further.
Posted on Mar 13, 2011
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Posted on Jan 02, 2017
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