Engineered to manage the precise timing and sequencing of electrical circuits

supporting both maintenance of older units and modern refrigerant conversions

allowing for versatile configuration in both dehumidification and humidification sequences

and gas valve with automated timing

Whether you are servicing a Lochinvar Copper-Fin or an A

Carrier HK42FZ025 Control Board 318172-701 Engineered to manage the preciseMaintain the operational integrity of your residential heating equipment with the Carrier HK42FZ025 Ignition Control Board. This genuine OEM furnace control board is a direct replacement designed specifically for Carrier, Bryant, and Payne units to manage critical ignition sequences, gas valve timing, and blower motor cycles. Engineered for precision, the HK42FZ025 utilizes advanced 24 VAC circuitry to monitor safety sensors and provide diagnostic