Original message
| neuend
 |  "Bryant 90 plus code 31"
, posted Wed 7 Nov 12:51  
My bryant 90 plus has been working fine until last night - got home, 62 degrees in house. Tech came out, and it was working (all I did was replace dirty filter). Woke up this morning and it's 62 degrees again. Called tech. An hour later, it's working again. Tech and owner guy came, pointed out code 31 and exhaust pipe that wasn't all too downhill toward the furnace. I redid the exhaust pipe, got a nice slope now. Furnace came on when I had the pipe disconnected about a couple feet up once. But since then, it keeps finding its way back to error code 31. No ignition or attempt to. I'm thinking pressure switch? Moved in 2000, not sure how old the furnace is (owner did not leave manual).
Whaddya think?
Bob
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Replies:
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| mgussler614
| "Re(1):Bryant 90 plus code 31" , posted Sat 10 Nov 14:42
try clearing the drain line and trap to the furnace make sure their is nothing inside the intake pipe to the furnace
guz 1
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