This technical primer breaks down defrost control board operation, key components, and practical troubleshooting steps every ...
If it be me I would wire up a sail switch. Contact closed when the fan is on (hot air)and independent to the furnace.<BR><BR><BR>And yes, taping into the low voltage thermostat wiring would work ...
The fan center’s purpose is to control when the indoor fan turns on. Before the integrated gas control board, the indoor fan on gas and oil furnaces would either turn on at the same times as the heat ...
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