White Rodgers 50E47-843 HSI Module

The White Rodgers 50E47-843 is a veteran technician’s primary solution for servicing non-integrated furnace control systems. This hot surface ignition module is engineered for maximum versatility, providing a universal replacement for over 125 legacy HSI modules. It features variable timing capabilities via six color-coded program keys, allowing you to field-select trial-for-ignition, pre-purge, and ignitor warm-up durations. This eliminates the need to carry dozens of single-application boards on your truck, ensuring you can restore heat on the first visit.

Built for rugged field performance, this universal HSI control supports both direct flame sense (through the ignitor) and indirect flame sense (via a separate remote sensor) using a simple onboard jumper. The tri-colored diagnostic LED indicator provides immediate feedback, streamlining troubleshooting by identifying internal faults, weak flame signals, or polarity issues. It is a direct fit for common York 025-25436-701 and Rheem 62-25077-01 units, and includes a comprehensive cross-reference guide to ensure HVAC part compatibility across competitive brands like Honeywell, Fenwal, and Robertshaw.

Key Benefits

• Universal Compatibility: Replaces nearly all silicon carbide HSI modules, reducing inventory overhead for service contractors.
• Selectable Timings: Six program keys allow for precise configuration of ignition trials (4s or 7s) and pre-purge cycles.
• Advanced Diagnostics: The tri-color LED provides real-time status and error codes to accelerate furnace repair.
• Flexible Ignition: Rated for 120V ignitor relays and includes mounting hardware for either surface or junction box installation.
• System Protection: 100% shut-off design safely locks out the gas valve if the burner fails to ignite, ensuring equipment safety.

Common Questions

Each 50E47-843 module comes with a timing label and a set of color-coded program keys. Match the original part number to the cross-reference table provided in the instructions, then snap the corresponding key into the module’s card port to lock in the OEM-specified timings.

No, the 50E47-843 is designed for 120V silicon carbide ignitors. If you are replacing a 240V system, verify the voltage requirements before installation as this board is rated for standard 120V furnace ignition control applications.

In the field, a solid red light usually indicates an internal module fault or reversed low-voltage connections at the gas valve. Before swapping the board, check your polarity and ensure all 24V leads are correctly phased.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.