OEM Carrier Furnace Control Board HK42FZ013 for Model PG9MAB048100LBSA

This is the factory OEM integrated furnace control (IFC) board for the Carrier PG9MAB048100LBSA gas furnace. The control board is the central nervous system of your furnace — it sequences every stage of operation, including inducer startup, hot surface ignition, gas valve activation, blower motor timing, and fault code diagnostics. When this board fails, you may experience a hard lockout with no heat, erratic ignition attempts, a continuously running blower, or status LED fault codes indicating a board-level failure. Replacing it with the correct OEM part ensures full compatibility with all connected components and restores factory-programmed timing sequences.

• Specs: OEM Part Number HK42FZ013 | Factory-matched IFC board | 120V input | 24V control circuit output | Compatible with single-stage gas valve and HSI ignition system
• OEM vs Generic: This is a genuine Carrier OEM board with factory firmware and exact terminal layout. Aftermarket boards may require wiring modifications, carry mismatched timing sequences, and void equipment warranties — always use OEM on control boards.
• Install Difficulty: 3/5 — Moderate skill required. Power off and lock out the furnace at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, phone or camera to photograph all wiring harness connections prior to removal. Transfer one connector at a time to avoid miswiring. Verify all LED indicators on the new board before closing the cabinet.
• Warranty: 1-year OEM factory warranty against defects. Orders placed before cutoff ship same business day from our warehouse.

Compatibility: Designed as a direct OEM replacement for the Carrier PG9MAB048100LBSA gas furnace. Always cross-reference the part number printed on your existing board before ordering, as similar Carrier models may use a different board revision. Need help confirming fitment? Our HVAC parts specialists verify compatibility before your order ships — contact us anytime.