View Full Version : coleman furnaces
10-27-2006, 07:47 PM
Are the fan switches on a coleman furnace adjustable. This furnace sits in a trailer. The blower motor runs for about 3mins after thermostat is satisfied. Is this the correct amount of time or is it too long?
10-27-2006, 08:27 PM
Your fan will run until your heat exchanger has cooled down enough to "break" fan switch. Is your thermostat overshooting its set point because of this?
10-27-2006, 08:54 PM
Is your filter clean. What about your A-Coil?
When was your last tune-up?
10-28-2006, 11:17 AM
Sounds a little long. Are you certain it is 3 minutes, or might it just seem that long :D
Are the homeowner of this unit or a tech working on it?
10-28-2006, 07:05 PM
I am a service tech. Adjusted anticipator on thermostat and watched cycle off. It is a 7600 series coleman furnace and the fan shuts off at 2min 30 seconds. Is there some sort of timer on this furnace that breaks contact after so long.
10-29-2006, 06:14 AM
look at the unit...a tech should be able to tell what cycles the blower off.....
10-29-2006, 10:32 AM
It could have a fan limit switch with the fan switch fixed at 105-20, or a fan switch at 110-20, or 130-35.
You'll have to look for yourself which one is controling the fan.
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