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FRANKKINCAID
Oct 23, 2008, 02:15 PM
my bryant furnance model 100-394u wont light up.the gas is on,the pilot is on but it still wont light. last year i put a new hunter thermostat and it worked all winter but this year it wont start any advise
wmproop
Oct 23, 2008, 04:14 PM
wow,,,,if you got a year out of a hunter tstat,consider your self lucky,,they are junk
T-Top
Oct 23, 2008, 06:16 PM
Check to see if you have 24v at the gas valve(when the thermostat is calling for heat). If you dont have 24v, jump from R to W on the low voltage. If no flame or 24v on the gas valve after that make sure you have a 115v to power the furnace and transformer. Make sure you put the gas valve back to on after lighting the pilot. This unit has to be around 30 years old.