Trane S9X2 96 Two-Stage Gas Furnace E2.3: First-stage gas valve not energized when expected
The Trane S9X/S9B integrated furnace control table identifies E2.3 when the first-stage gas valve is not energized when it should be after repeated attempts.
Trane S9X2 96 Two-Stage Gas Furnace E3.1: Shorted first-stage pressure switch
The Trane S9X/S9B integrated furnace control table identifies E3.1 as a shorted first-stage pressure switch condition.
Trane S9X2 96 Two-Stage Gas Furnace E3.2: Open first-stage pressure switch
The Trane S9X/S9B integrated furnace control table identifies E3.2 as an open first-stage pressure switch condition.
Trane S9X2 96 Two-Stage Gas Furnace E3.3: Shorted second-stage pressure switch
The Trane S9X/S9B integrated furnace control table identifies E3.3 as a shorted second-stage pressure switch condition.
Trane S9X2 96 Two-Stage Gas Furnace E3.4: Open second-stage pressure switch
The Trane S9X/S9B integrated furnace control table identifies E3.4 as an open second-stage pressure switch condition.
Trane S9X2C100D5PSB E7.1: Gas valve energized when it should be off
The Trane S9X/S9B integrated furnace control table identifies E7.1 when the gas valve is energized without the proper request.
Trane S9X2C100D5PSB E11: Internal gas valve relay or valve error
The Trane S9X/S9B integrated furnace control table identifies E11 as a gas valve relay or gas-valve energizing error.
Trane S9X2 96 Two-Stage Gas Furnace E01: Internal control failure
The Trane S9X/S9B integrated furnace control table identifies E01 as loss of IRQ or another internal furnace-control failure.
Trane S9X2 96 Two-Stage Gas Furnace E2.1: Retry exceeded; flame never sensed
The Trane S9X/S9B integrated furnace control table identifies E2.1 as retries exceeded because flame was never sensed, resulting in a lockout condition.
Trane S9X2B080D4PSB E11: Internal gas valve relay or valve error
The Trane S9X/S9B integrated furnace control table identifies E11 as a gas valve relay or gas-valve energizing error.