Good morning everyone,
I am a super newbie but have run into an issue that I can't seem to google my way out of.
I have a Lennox Diplomat HVAC in my home. The home was built in 1994 and the unit is original to the house. I hope to replace it in the next year or so. The AC worked well all year and now that we are switching over to heat this issue came up. When I set the thermoset to heat (nest thermostat) or the dual mode, I can hear the furnace turn on but it seems the blower motor never engages. If I then switch it back over to AC, it turns on and the blower begins pushing air through the house.
It looks like everything is ok on the board (lights arent showing an error). I have checked all the breakers, checked the wires behind the thermostat, and turned it off and back on (im an IT guy).
Im sure someone smarter than me has seen this before. Any help would be great.
Thanks!
I am a super newbie but have run into an issue that I can't seem to google my way out of.
I have a Lennox Diplomat HVAC in my home. The home was built in 1994 and the unit is original to the house. I hope to replace it in the next year or so. The AC worked well all year and now that we are switching over to heat this issue came up. When I set the thermoset to heat (nest thermostat) or the dual mode, I can hear the furnace turn on but it seems the blower motor never engages. If I then switch it back over to AC, it turns on and the blower begins pushing air through the house.
It looks like everything is ok on the board (lights arent showing an error). I have checked all the breakers, checked the wires behind the thermostat, and turned it off and back on (im an IT guy).
Im sure someone smarter than me has seen this before. Any help would be great.
Thanks!
source https://hvac-talk.com/vbb/threads/2243176-Blower-not-running-on-Heat-Only?goto=newpost
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