Trane Xr90 Parts Diagram Fix Jun 2026

: The gas valve controls fuel flow to the burners, where ignition occurs to produce heat. Integrated Furnace Control (IFC)

| Component | Buy OEM (Trane) | Buy Aftermarket (Generic) | | :--- | :--- | :--- | | | Yes – Aftermarket boards often mis-time the blower. | No | | Inducer Motor | Yes – Fitment issues are common with universal motors. | No | | Igniter (HSI) | No – Universal Norton/Protech models work fine. | Yes | | Flame Sensor | No – $10 generic rod works as well as $35 Trane. | Yes | | Gas Valve | Yes – Requires specific pressure regulator tuning. | No | | Pressure Switch | No – Standard 1.20” WC switch is universal. | Yes | | Blower Motor | Maybe – Compare RPM/Speed taps carefully. | Preferred | Trane Xr90 Parts Diagram