ghost fan..??

[primmers]

a friend of mine says her fan comes on all by its self..
the t-stat is one of those old round non-digital ones.
its set on auto, and the heat/cooling is in off.

but insists the fan comes on all by its self then shuts off..

can someone give me a clue?

[beenthere]

Where is the unit located.

Some attics get hot enough for the fan/limit switch to start the fan, and then shut it off when the sensor cools.

[ct2]

how would you like the thermostat to work.? if it wont turn off then set the temp do that it will

[primmers]

ct, the way the t-stat is set, fan on auto and cooling/heat on off, why would the fan come on??

been, it hasnt got hot enough here..the heater is in the garage..the ac unit is on the south wall..

[Senior Tech]

Bet it's a comfortmaker furnace...any takers?

[danj]

You may need a resistor between G and C to stop the ghost fan.

[primmers]

what size??

[beenthere]

Brand, and mod of furnace?

[Edmund Forsthe]

does the furnace have a camstat

[dec]

With that little of information.....who knows? Now as much as I made answering that question......the answer was worth about the same.

[primmers]

"i'll be bock"...

[dec]

Primmers.......Im just curious, Now at first I thought you were a homeowner trying to fix a friends furnace. Now I see that you are a tech, from looking at your other posts. Am I right?

[beenthere]

looks like he's a refer guy.

[dec]

[QUOTE]Originally posted by beenthere
looks like he's a refer guy. [/QUOTE


What .........like he would be better to refer it to someone that knows?

[beenthere]

Originally posted by dec
[QUOTE]Originally posted by beenthere
looks like he's a refer guy. [/QUOTE


What .........like he would be better to refer it to someone that knows?

LOL...
refrigeration.

[primmers]

i dont do ac, and ...im not able to get to this girls house to check it out..so i thought id ask here..


im telling you guys what shes telling me..i do know its not a big bucks ac system, a propane heater and a small ac unit..
i had installed a robertshaw digital t-stat, and replaced it 3 times, until she asked that i replace the original back...its was fine for the past few months, and now the fan is comming on...for no aparent reason...ill get there in my spare time and look at it...


thanks anyway...

[Edited by primmers on 06-05-2005 at 06:58 PM]

[jacob perkins]

Sounds like it is operating as it should.
If you will turn the temp dial all the way up when you turn the mode off ,it should prevent the fan coming on (unless they like to keep the house at 90+ degrees,or unless the t-stat is tilted.)

[fick]

Have you considered calling in a ghost tech?

[dec]

I think thats why its being asked here.....ghost pay