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Furnace fan but no heat
It was 47 degrees the other night and I had no heat. I took the whole thing apart in addition to hitting the reset rocker switch with no success. Additionally, the circuit board showed no red light indications. I changed the 15A fuse - no success. I shut off the furnace at the thermostat to work on it the following day. After several hours, the furnace kicks on for 30 seconds and shuts off. No heat was pushed out. This happened with the thermostat turned "off"?! How is that possible? So I turned on the furnace before hitting the sack and the fan turned on/off all night? Any ideas?
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