Trane Gas Furnaces: TUD / TDD /TUX / TDX Re: Furnace Lockout Codes / Diagnostic Codes INTEGRATED FURNACE CONTROL - ERROR CODES Flashing Slow Normal - No call for heat Flashing Fast Normal - Call for heat On Replace Control Off Check Power 2 Flashes ...

Make: Trane Model or Series: TUX120R960W5 Type: 90% Furnace Problem Description: Installed a new furnace control board (CNT05159) and the glow plug went out two days later. Observed Symptoms: The old control board would not energize gas valve. The new control board functions correctly...

Gas Furnace: TUX1/TDX1 Re: Flashing Code 3 Code 3 = Pressure switch fault A Code 3 will result from either of the following conditions: Pressure switch contacts "Closed" when the inducer motor is commanded OFF. Pressure switch contacts "Open" when the inducer motor is commanded ON. ►...

Gas Furnace: TUX1 Re: Flashing Code 4 Code 4 = Open Limit Circuit There are three limits in the limit circuit: Main Limit (TCO-A) - Automatic-reset limit for the heat exchanger. Roll-Out Limit - Manual-reset limit mounted above burners. Auxiliary Limit (TCO-B) - Automatic-reset limit,...