Came home today to find my house at 53 F. Thermostat was set at 68, so I checked the breaker and that was fine. Checked the wires from the t-stat to the furnace and everything looked good. Pilot light was lit, so I turned the fan switch to "manual" and now the furnace is blowing cool air. I've never dealt with heating/cooling systems so any advice would be great. Thanks in advance.

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Originally Posted by coach78

Came home today to find my house at 53 F. Thermostat was set at 68, so I checked the breaker and that was fine. Checked the wires from the t-stat to the furnace and everything looked good. Pilot light was lit, so I turned the fan switch to "manual" and now the furnace is blowing cool air. I've never dealt with heating/cooling systems so any advice would be great. Thanks in advance.

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Figured it out myself. The cable guy was around my furnace yesterday and must have hit the vent cover and tripped the reset "ring". That's all it was, a little red ring that gave me such a headache in the middle of winter.