View Full Version : Furnace blower doesn't come on
bigd53545
Oct 27, 2007, 10:08 AM
I have a Bryant furnace. The small draft inducer motor runs, but the blower doesn't come on. Any advice on this problem would be appreciated. Thank you.
T-Top
Oct 27, 2007, 05:47 PM
If the inducer motor is running and its not trying to light you may have a restricted vent pipe or bad ignitor on the furnace. How old is the system?
bigd53545
Oct 28, 2007, 08:25 AM
The furnace was built in 1989. The main burner seems to be running at times. Are there a set of points that signal the blower to run after main burner is running? Thanks again for the help.
esquire1
Oct 28, 2007, 09:07 AM
Check the blower relay
labman
Oct 28, 2007, 10:08 AM
Go to the sequence of operations of a gas furnace in https://www.askmehelpdesk.com/heating-air-conditioning/heating-cooling-maintenance-repair-troubleshooting-frequently-asked-questions-58313.html
Your furnace is likely new enough that a timer on the circuit board operates a relay to start the blower. If it doesn't come on, a temperature sensor shuts the furnace down, and it tries to start again.
Whether the timer or the relay is failing, likely you are out $$$$$$$$$$$$ to replace the board.