Why does the furnace fan run continouslyPost created: 2018-02-27 Type of Equipment: Furnace Views: 4
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Since early 1960s The furnace fan keeps running continuously. This has been going on for a couple weeks now. I've sorta isolated it to the timer switch. The only way to shut fan off is to shut power to furnace. Once the power is turned on after a while the gas fires up and shortly after the fan comes on and keeps on running even after the gas has shut off. The fan will again run continuously unless it's power is switched off.