On 7 Dec 2005 07:59:04 -0800, "dave" wrote:

I just bought a house with a Rheem forced-air gas furnace upstairs with
an electronic pilot light and a manual thermostat. Here's the problem:
For about 17 hours every day it works fine. Every night around bedtime
it shuts down for several hours and won't restart. I've tried turning
it off and on. It just comes one for a few minutes, blows cold air and
shuts down. Can it be a bad thermostat if it works fine the rest of the
day? I'm confused and need some help. I'd call a service technician,
but he would come during the day, charge me a $100 service call, and
tell me it works fine. Help?


My house is like that too. I think during the day, people are walking
around helping circulate the air and preventing the buildup of static
temperature gradients.

At night when the air is still, the bedrooms get cold, but the
thermostat (in the hallway) stays satisfied.

I don't have an answer.... That just seems to be the way it works.
That being said, check to see if your thermostat has some sort of
anticipator adjustment. It's supposed to prevent wide temperature
swings.

Beachcomber