"bill" wrote in message
...
I just wanted to know if gas valve cycling is normal while the
thermostst waits to be satisfied. one says no others say yes.???
anyway...i changed a dirty filter and the valve remeined opened during
the complete cycle, which leads me to believe... that gas valve
cycling ( on my model) is NOT normal.......Thanks for your inputs and
discussion. its all helpful.. Bill



Well, quite simply...its NOT normal on ANY model made in the last 20
years....or any before that if its installed right.
Call for heat from thermostat, valve is open..unless a thermal trips...


On 23 Nov 2005 04:18:12 -0800, "buffalobill"
wrote:

mike b's post reminded me to tell you that we've cleared up a
malfunction more than once, cleaning out the silicone updraft flue
blower motor tube connection with a paperclip.

"Mine did that too, but is a diff model Carrier. Was caused by a slug
of
water in the draft motor pressure switch tubing.

MikeB"