OEM Carrier LP Gas Pressure Switch HK02LB008 for Model TFACCYCRLPELEV004A00

This OEM LP gas pressure switch (part number HK02LB008) is the factory-specified replacement for Carrier TFACCYCRLPELEV004A00 gas furnaces and heating systems. The gas pressure switch monitors incoming propane (LP) supply pressure and proves that safe operating pressure is present before allowing the control board to initiate ignition. When this switch fails or drifts out of calibration, the furnace will typically lock out before or immediately after the ignition sequence begins — leaving you with no heat. Common failure symptoms include a furnace that attempts to start but shuts down within seconds, a blinking fault code indicating a pressure switch fault, or a unit that fails to call for ignition entirely.

• Specs: LP (Propane) Gas Pressure Switch | Cut-out pressure: 6.5" W.C. (inches water column) | OEM-matched setpoint tolerance | Factory-original sensing port and electrical connector configuration
• OEM vs Generic: This is a genuine Carrier OEM part, ensuring exact cut-out pressure calibration. Generic or aftermarket pressure switches can carry wider pressure tolerances, leading to nuisance lockouts or — more critically — failure to shut off gas flow under unsafe pressure conditions.
• Install difficulty: 2/5 — Turn off gas supply and power to the unit before beginning. Tools needed: ¼" nut driver, flathead screwdriver, needle-nose pliers. Photograph all wiring and hose port connections before disconnecting. Swap hose connections and spade terminals to the new switch, restore power, and verify ignition sequence completes normally.
• Warranty: 1-year OEM manufacturer warranty. Orders placed before cutoff ship same business day from our warehouse.

Compatibility & Note: Designed for Carrier TFACCYCRLPELEV004A00 LP/propane-fired heating equipment using the HK02LB008 gas pressure switch. Note that the HK02LB008 has been superseded — the current Carrier direct replacement is HK02MB008; confirm the correct part for your application before ordering. Our team is available to verify fitment. In stock and ready to ship today.