Trane CNT5133 Control Board

The Trane CNT5133 Control Board is a critical OEM 1-stage ignition control board designed for high-reliability direct spark ignition (DSI) in residential furnaces and packaged units. As a direct replacement for the CNT05133 and D674711P01, this board functions as the central logic unit, managing the precise timing of the single-stage heating sequence, including inducer motor engagement, flame sensing, and gas valve regulation. Engineered for Trane and American Standard equipment, it utilizes advanced adaptive heat timing to ensure consistent ignition even as components age. The integrated microprocessor provides real-time diagnostic monitoring, using onboard LED flash codes to accelerate HVAC troubleshooting of safeties like limit switches and pressure sensors. This circuit board is built with heavy-duty traces to resist thermal stress and moisture, ensuring system performance and stable terminal communication across the YCC, YCX, 4YCC, and 4YCX equipment series.

• OEM Precision: Genuine Trane replacement part ensures 1:1 fitment and factory-standard logic for single-stage furnace control.
• Diagnostic Accuracy: Onboard LED diagnostic codes simplify fault detection for gas valves, flame sensors, and pressure switches.
• Enhanced Safety: Continuous flame sensing technology prevents gas buildup by immediately closing the gas valve if a flame is not detected.
• Broad Compatibility: Drop-in replacement for common part numbers including CNT05133 and D674711P01 across multiple tonnage models.

Is the CNT5133 compatible with 2-stage heating systems?
No, this board is specifically engineered for single-stage gas furnaces and packaged units. Verify your equipment nameplate for 1-stage operation before installation.

What do the LED flash codes signify?
The integrated diagnostics communicate specific system faults—such as a lockout or an open limit switch—to identify whether the issue is the board itself or an external safety component.

Does this board replace the CNT05133 model?
Yes, the Trane CNT5133 is the current OEM designation and it successfully replaces CNT05133, providing updated circuitry and heat timing logic.

This item is not eligible for free shipping.

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.