The unit is factory-calibrated for a 3

particularly those requiring visibility for two separate control indicators

Standardized Ports: 1/2" FNPT connections allow for straightforward replacement and compatibility with standard black pipe or copper fittings

ensuring reliable performance during peak summer loads when system amperage draw is at its highest

or are performing a clean-up after a burnout

Carrier HK42FZ036 Control Board 326058-757 The unit is factory-calibrated forThe Carrier HK42FZ036 Control Board is a critical OEM integrated furnace control designed for high performance management of residential and commercial heating cycles. As the central logic hub, this direct replacement circuit board coordinates the sequence of operation for the inducer motor, hot surface igniter, and blower fan while monitoring essential safety strings. Engineered for compatibility with select Carrier, Bryant, and Payne furnaces,