OEM Carrier LP Gas Pressure Switch HK02LB008 / HK06WC091 for Model PG8MAA048110AEJA

This OEM Carrier LP gas pressure switch is the factory-specified replacement for the Carrier PG8MAA048110AEJA packaged gas unit. The pressure switch proves that the inducer motor is operating correctly and generating sufficient negative pressure before allowing the ignition sequence to proceed. When this switch fails or sticks open, the furnace will go into lockout immediately — typically before any ignition attempt — and the unit will display a pressure switch fault code. This listing covers both OEM part numbers HK02LB008 (Gas Pressure Switch) and HK06WC091 (Pressure Switch / High Fire), both factory-matched to this model.

• Specs: LP (Propane) Gas Pressure Switch | 6.5" W.C. cutout rating | SPST configuration | Factory-authorized OEM replacement | Fits Carrier, Bryant, and Payne badge variants of this platform
• OEM vs Generic: OEM pressure switches are calibrated to exact W.C. (water column) tolerances at the factory. Off-brand or universal substitutes frequently drift outside spec, causing nuisance lockouts or — more dangerously — failing to protect against inadequate inducer draft. Always use OEM on gas-proving circuits.
• Install difficulty: 2/5 — Shut off gas and power before starting. Tools needed: flathead and Phillips screwdrivers, 1/4" nut driver, multimeter (to verify open/closed state across switch terminals). Photograph all tubing and wire connections before disconnecting. Check inducer wheel and tubing for blockages before condemning the switch.
• Warranty & Shipping: 1-year OEM factory warranty. Orders placed before 3 PM local time ship same business day from our warehouse. Note: HK02LB008 and HK06WC091 have been superseded — this listing supplies the current OEM-authorized replacement units (HK02MB008 / HK06MC110) that are direct drop-in fits with identical specifications.

Compatibility: Engineered for the Carrier PG8MAA048110AEJA packaged gas unit. This switch is also used across the Carrier, Bryant, and Payne furnace and packaged unit lineup where an LP gas pressure switch with a 6.5" W.C. rating is specified. Verify your unit's data plate and existing switch markings before ordering. Our fitment team is available to confirm compatibility — just contact us with your full model and serial number.