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This is the OEM factory-specified pressure switch (part number HK06WC061) for the Carrier LC3:50HE400808—— packaged unit. The pressure switch is a critical safety component that monitors negative pressure created by the inducer draft motor before allowing the ignition sequence to proceed. If the switch fails to close — or fails stuck open or closed — the control board will lock out the heating cycle entirely, leaving you with a no-heat condition and a fault code pointing to draft or pressure circuit failure.
Compatibility: Designed as a direct OEM replacement for the Carrier LC3:50HE400808—— packaged unit. Always cross-reference the W.C. rating printed on your existing switch and confirm the OEM part number HK06WC061 on your unit's wiring diagram or data plate before ordering. Our fitment team is available to verify compatibility prior to purchase. In stock and ready to ship today.