Trane Ignition Control Board CNT03457

Trane CNT03457 Integrated Direct Spark Ignition Control Board

Restore safe, reliable heating performance to your furnace with the genuine Trane CNT03457 Ignition Control Board. As a critical Factory Authorized Part for Trane and American Standard systems, this integrated furnace control module manages essential heating sequences, including fuel gas valve operation, direct spark ignition, and continuous safety limit monitoring.

This Service First OEM circuit board features advanced onboard diagnostics. It is engineered to instantly detect system malfunctions and display fault codes via a built-in LED indicator, making system troubleshooting and routine maintenance straightforward for technicians and homeowners alike.

Technical Specifications:

  • Model/Part Number: CNT03457
  • Ignition Type: DSI (Direct Spark Ignition)
  • Voltage Compatibility: 24 VAC Control Circuit
  • Frequency: 60 Hz
  • Diagnostic Interface: Onboard LED Indicator Codes
  • Safety Controls: Continuous flame monitoring, gas valve safety lockouts, and limit switch integration

Key Features & Benefits:

  • Genuine OEM Precision Engineering: Manufactured to exact Trane factory specifications, guaranteeing a flawless electrical match and drop-in physical fit. Avoid the compatibility and safety risks associated with "universal" aftermarket control modules.
  • Smart Diagnostic Codes: The integrated LED quickly flashes precise diagnostic signals when a system fault occurs, removing the guesswork from HVAC troubleshooting.
  • Comprehensive Flame Safeguard: Features high-precision microprocessors that constantly monitor the heating flame to ensure gas flows only when a safe ignition is established.
  • Heavy-Duty Construction: Built with durable, heat-resistant circuit paths and robust relays designed to survive high-cycling demands during peak winter seasons.

Compatibility & Cross-Reference

The CNT03457 serves as the official, factory-authorized update for multiple legacy controls. It is a direct fit replacement for:

  • Discontinued Part Numbers: CNT03456 and X13650874-010.
  • System Application: Residential and light commercial gas furnaces and packaged heating units.

Important Installation Notice:

Depending on your existing unit configuration, installing this updated control module may require a wiring upgrade kit (Part Number: KIT06839) to adapt to legacy wire harnesses. To guarantee you have everything needed for a successful installation, please call or email us with your equipment's full model and serial number before ordering.

Why Buy From Shortys HVAC Supplies?

At Shortys HVAC, we are dedicated to providing Original Equipment Manufacturer (OEM) parts so your equipment operates exactly as the engineers intended. Choosing factory-certified components protects your system's long-term reliability and preserves manufacturer warranty compliance.

Shipping Information: We provide fast, reliable shipping rates across the continental United States, ensuring your critical replacement parts arrive on time to keep your property warm and safe.

$514.00

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  • Model: CNT03457
  • Manufactured by: Trane
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