and a PTFE-coated disc to prevent seat sticking

providing durability in demanding commercial applications

No Lubrication Required: Eliminates the need for ongoing maintenance and prevents grease-related contamination in sensitive areas

mounting the solenoid upright is the best practice to prevent sediment buildup in the core tube

Carrier HK42FZ088 Control Board 321142-301 and a PTFE-coated disc toThe Carrier HK42FZ088 Control Board is a genuine OEM furnace control board engineered to restore full operational command over residential and light commercial HVAC systems. As an essential integrated furnace control (IFC), this board manages critical sequences including ignition, inducer motor operation, blower motor timing, and safety circuit monitoring. It serves as a direct upgrade for several legacy components, effectively replacing HK42FZ057,