Questions & Answers for: furnace blower speed

furnace blower unexpectantly changed from high speed (typical for summer A/C use) to low speed (for winter gas furnace heating use) last night even though the outside A/C compressor was still running.

...furnace, the blower is either a 2 or 3 speed. When the furnace operates in heating mode with the thermostat in the auto position, the furnace starts the fan when the furnace reaches a specific ...

...furnace off, locate where the blower motor is, usually near the filter.. If you are capable, reach in and try to turn the blower wheel. If does not move, its possible the motor is bad. If it is a ...

...furnace. This helps us techs. narrow the problems down ok. Next, It sounds to me like maybe the blower motor itself might have a bad winding it it, or not coming on in the heat mode. This is because ...

...blower's low speed wire with the furnaces power source making it go on and staying on with the furnace. This may have been done to keep the air circulating to mantain a consitant temperature in ...

furnace fan blower relay burned; replaced relay, and furnace works, but the fan won't blow when thermostat is on ac The fans heat speed is low speed and the cool speed is high speed. High speed is

Furnace blower won't turn on When you turn the thermostat up, the green light comes on the blower unit. after about 15 sec. the red light comes on. The blower never starts You may need to replace the ...

...furnace blower need to connect furnace blower motor and gas valve. I interrupted a copper thief and I need to reconnect my furnace wiring Gas valve should only have a couple of wires...24 Volt & ...

furance starts, runs short time, blower stops short time, then blower comes on, burner still runniing. Sounds like you fan limit control is not set properly. Or the blower speed is set to high.

How do I change furnace blower speed? Some blower speed selections are identified right on the blower, e.g., H M L