York 031-02649-001 Board 320819-301 Always verify the opening temperature

Always verify the opening temperature and differential against the original equipment tag to ensure the safety circuit remains within the manufacturer's design specifications

As a factory-authorized OEM pressure switch

By utilizing the HN67ZZ001 relay board

this accessory provides both audible and visual notification for 4-wire conventional duct smoke detectors when a system control panel is not present

this model is specifically calibrated for the condenser side

York 031-02649-001 Board 320819-301 Always verify the opening temperatureThe York 031 02649 001 Board is a specialized EPROM Flash Control circuit designed to manage critical system logic and operating parameters in York HVAC systems. Engineered for high precision HVAC control board duty, this component utilizes EPROM technology to store and execute complex firmware instructions, ensuring stable communication between system modules. As a technician, you know that consistent flash control timing is vital for maintaining the