Carrier HK38EA022 Circuit Board 320735-701 or four-position switching

or four-position switching

it serves as the primary conduit for the gas heating section

Is this pilot assembly compatible with propane units

It is the official replacement for legacy part number S1-025-35304-000

A key technical advantage is the integrated sensitivity adjuster

Carrier HK38EA022 Circuit Board 320735-701 or four-position switchingAs a core component for modern heat pump and air conditioning systems, the Carrier HK38EA022 Circuit Board serves as the primary defrost control for high efficiency outdoor units. This OEM control module is critical for maintaining HVAC system performance by managing complex logic for defrost cycles, pressure switch monitoring, and short cycle protection. Designed for Carrier, Bryant, and Payne residential and commercial units, this board is a direct