Carrier HK42FZ031 Circuit Board 324846-701 CSD1 Requirement Compliance: Meets strict

CSD1 Requirement Compliance: Meets strict safety standards for boiler installations requiring a manual reset following a low water condition

failure to initiate the ignition sequence

it requires a deliberate physical intervention following a trip

As a veteran-grade replacement for the L-307-1

This 1-1/2" NPT assembly features a stainless steel ball and stem to ensure long-term reliability and resistance to scaling in chilled or hot water applications

Carrier HK42FZ031 Circuit Board 324846-701 CSD1 Requirement Compliance: Meets strictThe Carrier HK42FZ031 Circuit Board is a critical OEM replacement component designed for high performance furnace control and integrated system management. Engineered for precision, this furnace control board regulates essential functions including the blower motor, gas valve, and igniter sequences. As a genuine Carrier furnace part, the HK42FZ031 ensures seamless communication between system sensors and the thermostat, maintaining optimal airflow and