fan shuts down

[salv97]

i have a 23 yr old bryant heater,when it cycles on and off the fan shuts down too,shouldnt the fan run constantly till it reaches the desired temp,how can i fix this problem,i thought it was suppose to work that way

[hvacrmedic]

i have a 23 yr old bryant heater,when it cycles on and off the fan shuts down too,shouldnt the fan run constantly till it reaches the desired temp,how can i fix this problem,i thought it was suppose to work that way

The fan is supposed to shut down at the end of the cycle. If the heater isn't heating the house, then call an hvac contractor and have them check it out, or set the t-stat higher.

[salv97]

the fan shuts down every time it cycles every 3 or 4 minutes the fan should continue till it reaches the temp setting,right

[hvacrmedic]

the fan shuts down every time it cycles every 3 or 4 minutes the fan should continue till it reaches the temp setting,right

Ok, I think I understand what you're saying now. The fan is short-cycling during a call for heat. Same answer though, you need to have it checked out by a qualified service tech. I could go over a couple of likely causes for that, but unless you're going to attemp a repair youself, that info won't be of much value to you, and unfortunately we can't provide DIY advice in this forum.

[salv97]

can you tell me a couple of things that it could be,thanks

[hvacrmedic]

can you tell me a couple of things that it could be,thanks

I can only list two possible causes without providing DIY info. Those are plugged air filter and/or too many vents closed off. Have you checked the air filter? Do you have several vents closed off? The other items on the list would involve mechanical repair to the system, and because of that they would fall under the category of DIY, which again, is not allowed in this forum. HTH.

[salv97]

ok thanks,its not either of those two

[ccut]

the fan shuts down every time it cycles every 3 or 4 minutes the fan should continue till it reaches the temp setting,right

If you cancel your call for heat will your fan run in the on position?

[man from trane]

What kind of stat are you using? If it's mechanical it could be the anticipator adjustment.

Has it always done this? New house? You said "heater". Is that electric or gas furnace, or heat pump?

[Rusty49]

sounds like it's cycling on temp limit. Get a pro to find out why or if.

[uniservice]

ANTICIPATOR

[salv97]

its a gas furnace,ive had 2 thermostats and its done them on both,the fan will run on on position,

[Rusty49]

are you saying the funace shuts down after running a few min. and not reaching your thermostat setpoint, and then cycles back on a few min. later?