York (Model: P4HUA1ZN06401B) vertical natural gas furnace. Observed that the burner on right, by the glowing starter, starts properly but the other three burners do not light and since the thermocouple on the left does not start, the gas is stopped in about 5 tyo 10 seconds. I cleaned all four...

Hi, I have a Heil furnace, propane, in my shop 125,000/100,000 BTU. Looks to be an older furnace but came out of a remodeled house where it was working. 2" PVC exhaust, intakes in building. TStat is newer (used in house) confirmed good, furnace turns on, exhaust fan runs, igniter makes sparking...

All right, I'm at my wit's end and I could use some help... Last week my furnace started blowing cold air. The pilot lights fine, but the burners will not light. My ex-wife's boyfriend's friend came out and looked at it and suggested we replace the furnace, said the heat exchanger/combustion...

Hi, I have an older York furnace and just replace the ignitor with a Honeywell glowfly universal ignitor. At first, it glows but no ignition... after a while, the burners finally lit and the furnace seemed to work fine with the furnace going on and off. After a few hours, ignitor glows but the...

I have a Ruud Silhouette II Gas Furnace. The whole unit is turned off/on by a light like switch. The AC is working, but the heater is not. It appears that no gas is flowing to the burner. The PWR light is on, steady. The OK light is flashing; three times on, then off. The Flame light is off in...