OEM Carrier Integrated Furnace Control Board HK42FZ018 for Model PG9YAA036080ABSS

This OEM Carrier integrated furnace control board (part #HK42FZ018) is the factory-specified replacement for the Carrier PG9YAA036080ABSS gas furnace. The control board is the operational brain of your furnace — it sequences every stage of the heating cycle, from inducer motor startup and igniter activation to gas valve timing and blower delay. It continuously monitors input from safety sensors and switches, triggering a system lockout the moment a dangerous condition is detected. When the IFC board fails, symptoms typically include repeated ignition lockouts, furnace short-cycling, no-heat calls being ignored, erratic LED fault codes, or a completely unresponsive unit.

• Part Number: HK42FZ018 | Cross-references: CEPL130590-01, CEBD430590-10A | Factory Authorized Replacement Parts (FAP) designation
• OEM vs Generic: This is a genuine Carrier OEM board — not a third-party clone. Aftermarket boards often lack exact firmware timing and sensor calibration, which can cause nuisance lockouts, voided equipment warranties, and premature component failure.
• Install Difficulty: 4/5 — Board replacement requires safely isolating 120V power and carefully documenting all wiring harness connections before removal. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, smartphone for wiring photos, and a multimeter for post-install verification. If fault codes are not cleared after replacement, consult the furnace's diagnostic LED sequence guide.
• Warranty: 1-year OEM manufacturer warranty. In stock and ships same business day from our warehouse when ordered before cutoff.

Compatibility: Directly fits Carrier model PG9YAA036080ABSS and select other PG9YAA-series and 58HDX-series units. Always verify your existing board's part number against HK42FZ018 before ordering to confirm fitment. Our HVAC parts specialists are available to confirm compatibility before you buy — no guesswork needed.