Hi there, how are you doing?
We have a "Bryant Plus 90" which was purchased about 10-13 years ago. It's been working great until about a year ago we had to "reset" it and it went back to work. Recently the LED shows a error code (31, three short blink and then one long blink) which according to the manual meaning:
PRSSURE, DRAFT SAFGUARD, AUX-LIMIT SWITCH(WHEN USED)OR BLOCKED VENT SWITCH(WHEN USED) DID NOT CLOSE OR REOPENED (DOWNFLOWONLY) If open longer than five minutes, inducer shuts off for 15 minutes before retry. Check for:
- proper vent sizing * defective inducer motor * restricted vent * excessive wind * low inducer voltage(115VAC) * defective blower motor or capacitor * defective pressure switch * inadequate combusstion air supply * disconnected or obstructed pressure tubing
If it opens after trial for ignition period, blower will come on for
90 sec. recycle delay.