Reznor 257473 Ignition Module

The Reznor 257473 Ignition Module is a critical direct spark ignition (DSI) control designed for precise HVAC furnace repair and system maintenance. This certified Reznor replacement part functions as the direct replacement for 234012, ensuring seamless integration into existing heating units without the need for extensive field modifications. Engineered for reliability in demanding commercial environments, the module manages the ignition sequence and provides gas valve control while monitoring flame rectification. The included lockout kit enhances system safety by preventing repeated ignition attempts in the event of a flame failure or sensing error. For technicians troubleshooting Reznor unit heater ignition problems, this module offers a standardized solution to restore burner sequencing and thermal output. Its robust solid-state construction and high-voltage spark output are optimized for compatibility with specific Reznor heating equipment configurations, maintaining OEM performance standards across high-cycle operations.

• OEM Compatibility: Specifically engineered to replace the legacy Reznor 234012 module with exact terminal matching.
• Integrated Safety: Features a built-in lockout mechanism to ensure safe furnace ignition sequence termination during faults.
• High-Voltage Precision: Delivers consistent spark energy to provide reliable DSI ignition control under varying gas pressures.
• Simplified Installation: Ignition module with lockout kit simplifies field upgrades for older Reznor units.

Does this module require a local or remote flame sensor?
The Reznor 257473 is designed for systems utilizing flame rectification through the spark electrode or a dedicated sensor, depending on the specific heater wiring diagram.

What does it mean if the module enters lockout mode?
Lockout occurs after failed ignition attempts to prevent unburned gas accumulation. Check the flame sensor rod for carbon buildup or verify gas valve voltage if this persists.

Can I use the 257473 to replace non-Reznor DSI controls?
This module is calibrated for Reznor’s specific combustion parameters. Cross-referencing the OEM part number is essential to ensure HVAC part compatibility and proper timing cycles.

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.