On 4/30/2012 9:43 AM, Tamara Lynn wrote:
wrote:
On 04/29/2012 07:44 PM, Tamara Lynn wrote:
wrote:
On 4/29/2012 7:29 PM, Tamara Lynn wrote:
wrote:

Just temporarily disconnect the thermostat if you
want to rule that out.
I pulled the batteries out of the thermostat for 10-15 seconds. When I
put
them back in, the fan immediately kicked on and finally shut off.



Check to see if there is an LED light blinking on the furnace unit.
There
could be an error code. May be minor, may be major, may be nothing at
all. Worth investigating.
My Lennox system is 30 years old, I think before they got LED. :-)

Anyway, I went out and turned the pilot light to the heat (gas) and then
turned off the gas to the unit. So far the fan hasn't came back on.
crosses fingers

Perhaps the heat on the flame on the pilot heated the central system, and
it
kicked on just to disperse that heat. At least that is what I am hoping
for...sigh. I should have just rented a husband!lol

T


That's a very real possibility on a system that old. I had the same thing
happen one especially hot day. For a complete solution I needed to adjust
the fan limit switch to not come on until it reached a somewhat higher
temperature (my furnace is in the attic, and here in Texas it can reach
150 up there on a hot day, which is where the switch had been set to turn
on the fan during heating season).
So you had it turned up high enough to fan the flames? ;-) I have an attic
fan that comes on at a certain temp. At first that was what I thought was
happening, until I went in the attic and found that was not the problem.
Since I pulled the batteries in the thermostat and doused the natural gas
pilot, the problem has went away.

Thanks to everyone who answered my post!

T



It's good to hear your system lasted that long but you might want to
look into getting a new one and have someone look at your duct work too.