York 031-01652-001 EPROM 320734-701 The Carrier HH12ZB190 Limit Switch

The Carrier HH12ZB190 Limit Switch is a critical OEM safety component engineered for HVAC high-limit protection in gas furnaces and packaged units

The 204CD1/4B1/4B is primarily rated for air and water

Its heavy-duty bronze construction ensures long-term resistance to corrosion and mechanical stress

Constructed with precision-balanced internal components

designed to maintain precise airflow patterns and minimize vibration-induced resonance

York 031-01652-001 EPROM 320734-701 The Carrier HH12ZB190 Limit SwitchThe York 031 01652 001 EPROM is a critical OEM replacement part designed specifically for York HVAC control boards utilizing R 22 refrigerant 2 compressor systems. As a veteran grade HVAC memory chip, this electrically programmable read only memory stores essential firmware instructions and operational logic required for precise HVAC system control. When on site diagnostics indicate parity errors or data corruption within the control logic, replacing