"stretch" wrote in message
ups.com...
What kind of filter do you have? The home centers are selling lots of
pleated filters like the 3M Filtrete. These filters have more pressure
drop and resistance to air flow than a fiberglass filter dirty enough
to grow seedlings in it. you could have a problem with low airflow
tripping the high limit switch. Put in a clean fiberglass filter and
try again. Messing with the heat anticipator is for professionals that
can measure the results. Make sure the registers in all rooms are
open. People sometiumes close them "to save money" and reduce airflow
in the system. Low airflow can ruin equipment.


stretch

Hi stretch, 3m pleated, right after I replied to HvacTech2 I read your post
and figured what the heck. Went down the basement and got the old fiberglass
filter and tapped out the loose gunk, put it back in and turned up the stat.
Sat there and watched it. The burner did cycle on a second time but then I
remembered the vent on the side of the cold air return at the furnace had
been closed off when some work was done on the house cause of code, but the
guy left it so it could be opened and said if you ever have trouble you can
open it. About 3 seconds after I opened it the burner shut off and there was
not a third or fourth burn. Right now it is hotter than hell in here and the
wood stove is going. Will try it in morning and see if it's back to 1 burn.
Going to have the Tech out anyway to check things out for safety's sake.

Stone