Bryant plus 80 furnance. Error code 33. Never goes to 13
Furnance turns on for about 3 mins of heat than kicks off.
1. Took blower motor out (cleaned, man it was nasty)
2. Checked graphite ignitor for cracks (nothing)
3. Filters (all clean)
4. Took out high limit switch tapped it just in case it was stuck
5. Bypassed limit switch (still error 33)
6. checked fuse on board (good)
7. check for loose wires (good there also)
8. Do notice after it kicks to 33 that motor is humming.
I can reset all night every 3 mins to try to get warm, but that may get boring.
