Carrier LH33WP007 Control Board

The Carrier LH33WP007 Ignition Control Board is a factory-authorized OEM replacement engineered for high-performance 24VAC furnace and packaged unit applications. As a critical HVAC furnace control board, this module manages the entire ignition sequence, including spark ignition, flame sensing, and gas valve regulation. Built for 60Hz systems, the Carrier LH33WP007 ensures precise timing and burner operation, providing a direct drop-in solution that eliminates the need for field modifications or complex rewiring. This OEM ignition control module features integrated safety lockout functions and diagnostic LED indicators to streamline troubleshooting for service technicians in the field.

Designed to withstand the thermal stress of high-heat environments, the Carrier LH33WP007 Control Board provides professional-grade reliability across compatible 48ES, 48EZ, and 48ESA series units. By maintaining exact manufacturer specifications, this direct replacement ignition board helps restore system efficiency and ensures the blower motor and inducer assembly function in proper sequence. Whether you are performing a routine furnace circuit board replacement or diagnosing a flame sensing failure, this genuine Carrier part is the standard for maintaining original equipment performance and safety.

• OEM Compatibility: Guaranteed fit for specific Carrier, Bryant, and Payne equipment, including popular 48ES and 48EZ packaged units.
• Integrated Diagnostics: Features onboard LED fault codes to quickly identify ignition failures or safety circuit trips.
• Advanced Safety: Manages flame rectification and gas valve timing to prevent hazardous operating conditions.
• Rugged Construction: Engineered with 1-phase, 24V architecture and a 5-amp fuse to protect sensitive downstream components.
• Streamlined Installation: Compact 7-inch by 5-inch footprint allows for easy mounting within the existing control cabinet.

• How do I troubleshoot a failure on the LH33WP007? Check the diagnostic LED on the board. Common codes indicate issues with the pressure switch, limit circuit, or flame sensing rod. Ensure the 24V supply is stable and the 5-amp fuse is intact.
• Does this board require a model plug? When replacing an older module, always verify if your specific furnace requires the transfer of an existing model plug to the new LH33WP007 for proper firing rates.
• Will this fix a 'No Heat' call where the igniter won't glow? If the inducer motor is running but the igniter is not receiving voltage, the LH33WP007 ignition relay may be the culprit, provided all safety limits (high limit, rollout) are closed.

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.