Lennox model G51MP furnace runs with heat to operating thermostat temp, but blower still keeps running.

SOURCE: coleman evcon Dgato7obdc

Small blower motor? Are you talking about the combustion blower if so then check your vents for blockage.. if the vents are blocked won't work... if it has a control board init it will give you a diagnostic code. Flashing light on the board... count the flashes and look up the fault on the chart in your owners manual ot on the furnace door..

Dale Koehn

• 88 Answers
• Posted on Jan 20, 2009

SOURCE: furnace blower not working how it should

first off buy yourself a honeywell stat, in my personal opinion lux stats are garbage, I have run into so many that are bad stats !!! but as far as your fan not shuting down, sounds to me like your fan center on your circuit board is bad and will not shut down the fan when needed, you will have to replace the circuit board, as the fan center is a part of the whole of the circuit board, hope that helps

SOURCE: re: furnace keeps running, no heat

sounds like the high limits tripped

SOURCE: Frigidaire furnace will not run the heat cycle, The furnace calls

It's a flame sensor.It looks like size of regular welding rod and have one wire connected to it.you have to removed and clean with 1000 grid sand paper and put it back on, that's all..

SOURCE: Rheem RHQA Heater:Blower works but no heat.

Is there a setting on the thermostat for Auto or Fan? If so, make sure it is in the Auto setting. You will have a contactor that turns on the elements and a relay for the fan. Follow the wiring diagram to see which relay energizes the fan then unplug it to see if the fan stops.