Failing furnace control board – If your furnace takes several tries to start up, if the burners turn on and off frequently or won’t shut off completely, or if the circuit board itself is giving off a burning smell, the furnace control board may be going bad. Gas Furnace Maintenance Tips...
•TROUBLESHOOTING Step8—InstallOutsideAirHood-FactoryOption.26 SystemVu™Controller(FactoryOption)...59 Step9—AssembleBarometricHood...27 SmokeDetectors...59 •BAROMETRICHOOD(VERTICALCONFIGURATION) •ADDITIONALAPPLICATIONDATA •BAROMETRICHOOD(HORIZONTAL CONFIGURATION...