OEM Carrier Furnace Control Board HK42FZ013 for Model PG8MAA048070ACJA

The HK42FZ013 is the factory OEM integrated furnace control (IFC) board for the Carrier PG8MAA048070ACJA packaged gas heating unit. The control board is the brain of your furnace — it sequences every stage of operation, from inducer startup and pressure switch verification to igniter firing, gas valve actuation, and blower motor ramp-up. When this board fails, you may experience a no-heat condition, repeated ignition lockouts, fault codes flashing on the LED indicator, erratic blower behavior, or a furnace that starts briefly and then shuts down without completing the heat cycle.

• Specs: OEM Part Number HK42FZ013 | 24V control circuit | Integrated diagnostic LED fault code display | Factory-matched for Carrier PG8MAA048070ACJA packaged gas unit
• OEM vs Generic: This is a genuine OEM Carrier board — not an aftermarket clone. OEM boards carry exact firmware, relay ratings, and terminal layouts. Generic boards often omit fault-code logic or use undersized relays, leading to premature failure and potential safety lockout issues.
• Install Difficulty: 3/5 — Disconnect power and gas before starting. Tools needed: 1/4" and 5/16" nut drivers, needle-nose pliers, phone or camera to photograph all wiring harness connections prior to removal. Take note of any active fault codes before powering down. Allow capacitors to discharge fully before handling the board.
• Warranty: 1-year OEM factory warranty against defects in materials and workmanship. In-stock and ships same business day from our warehouse.

Compatibility: Designed and factory-specified for the Carrier PG8MAA048070ACJA packaged gas heating unit. Always verify your existing board's part number (printed on the board label) matches HK42FZ013 before ordering. If you're unsure of fitment, our HVAC parts specialists are available to confirm compatibility before you buy — no guesswork, guaranteed correct part.