Carrier LH33WP002A Circuit Board

The Carrier LH33WP002A Ignition Control Circuit Board acts as the central logic and safety hub for high-efficiency Carrier, Bryant, and Payne gas-heating systems. As an OEM factory authorized replacement, this board is the exact technical equivalent of the LH33WP002 and is engineered for precise spark timing control, gas valve modulation, and constant flame sensing. For technicians service-calling rooftop units or residential furnaces, installing this 1068-83-121A-spec component ensures immediate compatibility with existing wiring harnesses without the need for field modifications. The board operates on a standard 24V control circuit and is built to withstand extreme thermal environments ranging from -40°F to 185°F. By strictly managing the ignition sequence and providing diagnostic LED error codes (such as 3-flash flame sense faults or 5-flash ignition lockouts), this HVAC circuit board maintains system uptime while preventing hazardous conditions. Whether you are addressing an internal microprocessor failure or a recurring ignition lockout, this genuine replacement ignition control restores factory-spec combustion performance and safety protocols.

• Universal Compatibility: Directly replaces and is identical to LH33WP002, fitting a wide range of Carrier, Bryant, and Payne equipment.
• Advanced Diagnostics: On-board LED indicator provides troubleshooting flash codes to quickly identify flame sense faults or limit switch trips.
• Enhanced Safety: Integrated ignition lockout and safety timing algorithms prevent gas buildup and ensure reliable furnace operation.
• OEM Durability: Robust construction designed for a 24V furnace control environment, resisting vibration and thermal stress.

• Is the LH33WP002A interchangeable with the LH33WP002? Yes, these part numbers are technically identical and serve as direct replacements for one another in all compatible HVAC systems.
• What does a 5-flash LED error code mean on this board? A 5-flash signal typically indicates an ignition lockout, meaning the board attempted ignition multiple times without successfully proving flame via the sensor.
• Can this board be used in 460V systems? While the unit itself may be part of a 460V system, this circuit board specifically manages the 24V control logic and must be powered by the system's step-down transformer.

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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.