I have a Coleman D.E.S 80 gas furnace model #2845C666.
When the thermostat tells the furnace to blow heat, there is a fan that turns on (vent fan?), the ignitor glows, gas flows and flames start dancing and when the blower should turn on, it does not and the gas turns off but the fan (vent fan?) keeps going. I started having problems last winter.
I have turned off the furnace, turned off the gas and then turned them back on. Last winter, this worked. I would reset it and then it would start working. The furnace worked for a month or so but now, the blower will not turn on.
Any ideas? I have limited knowledge but from a logical standpoint, I seem to think the fan switch. I have attached the wiring diagram.
Thank you in advance for any help
When the thermostat tells the furnace to blow heat, there is a fan that turns on (vent fan?), the ignitor glows, gas flows and flames start dancing and when the blower should turn on, it does not and the gas turns off but the fan (vent fan?) keeps going. I started having problems last winter.
I have turned off the furnace, turned off the gas and then turned them back on. Last winter, this worked. I would reset it and then it would start working. The furnace worked for a month or so but now, the blower will not turn on.
Any ideas? I have limited knowledge but from a logical standpoint, I seem to think the fan switch. I have attached the wiring diagram.
Thank you in advance for any help
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