Fan won't turn off in old Bryant furnace - http://www.hvacmechanic.com/ Forums


Original message

jwozniak29

207.119.237.237

"Fan won't turn off in old Bryant furnace" , posted Tue 30 Jan 20:41user profileedit/delete messagepost reply


The only time the fan shuts off is when the breaker is off or when the push button on the furnace is not pushed in. Someone mentioned that it might be the fan limit switch, but I'm not sure about that. Also, while all this is going on the burners are not lighting up. I'm not sure if the two are related, but no heat is produced. Hope someone can help.

 


Replies:

Houston204



24.175.6.172

"Re(1):Fan won't turn off in old Bryant furnac" , posted Sat 3 Feb 23:36user profileedit/delete messagepost reply


How old? If its a 1992 or newer you dont have a fan limit.
the first 4 digits of the serial number indicate week and year of manufactor date.

 

 

jwozniak29

66.112.68.89

"Re(2):Fan won't turn off in old Bryant furnac" , posted Sun 4 Feb 15:31user profileedit/delete messagepost reply


The first 4 numbers are 3783. I guess it was made in 1983. Any tips?

 

 

jwozniak29

66.112.68.89

"Re(2):Fan won't turn off in old Bryant furnac" , posted Sun 4 Feb 15:29user profileedit/delete messagepost reply


 

tinmantu

24.224.7.77

"Re(1):Fan won't turn off in old Bryant furnac" , posted Tue 30 Jan 21:52user profileedit/delete messagepost reply


If its indeed an old bryant it probably has a timer that heats a small coil, time delay if you will....some had a slide adjustment on them and you can make note of the current setting and work it back and forth a few times and hope for the best....I'm sure there are still factory replacements out there but I still salvage one to carry in my van to get me out of a pinch.

 

 

moondog



24.118.176.227

"Re(2):Fan won't turn off in old Bryant furnac" , posted Wed 31 Jan 05:03user profileedit/delete messagepost reply


where is this 'push button' located?

Thermostat (thur me-stat') The 1st thing a HomeOwner suspects is wrong which is usually wrong thinking on their part. If in doubt jump it out.

 

 

jwozniak29

207.119.237.237

"Re(3):Fan won't turn off in old Bryant furnac" , posted Wed 31 Jan 13:20user profileedit/delete messagepost reply


The push button is located on the inside of the top panel of the furnace. When the top panel is in place, the button is pushed in. Already tried replacing the thermostat, that was not the problem.