Hitting the hay and figured to ask one late night question. When the inductor gas exhaust vent is removed, the furnace fires and runs fine, but as soon as the exhaust vent is installed 4 flashes and then off.
How many times have you had to clean out the cap on the roof of bees/birds nests? Going to check in the morning, but thought I'd throw it out there and ask.
If its not the exhaust pipe plugged and there is no blockage in the fresh air input, we swapped out the inductor fan motor assembly, ignitor, probe, high limit switch on the blower housing.
Brain dead right now........ running out of ideas. Sleep time.....
How many times have you had to clean out the cap on the roof of bees/birds nests? Going to check in the morning, but thought I'd throw it out there and ask.
If its not the exhaust pipe plugged and there is no blockage in the fresh air input, we swapped out the inductor fan motor assembly, ignitor, probe, high limit switch on the blower housing.
Brain dead right now........ running out of ideas. Sleep time.....
source https://hvac-talk.com/vbb/showthread.php?2223352-No-flame-4-flashes-high-limit-switch-replaced-dirty-filters-inductor-motor-replac&goto=newpost
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