OEM Carrier Ignition Control Board LH33WP007 for Model PY3GNA024040AA

This is the factory OEM ignition control board (part number LH33WP007) for the Carrier PY3GNA024040AA packaged HVAC unit. The ignition control board is the brain of your system's heating sequence — it orchestrates the inducer motor, hot surface igniter, gas valve, and flame sensor in precise timed stages. When this board fails, the result is a complete loss of heat, repeated lockout codes, or a system that attempts ignition and shuts down without ever establishing a stable flame.

• Specs: 24V, 60 Hz ignition control board | OEM part number LH33WP007 | Factory-direct replacement | Weight: 0.84 lbs | Compatible with Carrier 24V control circuits
• OEM vs Generic: This is the genuine Carrier OEM board — not an aftermarket clone. OEM boards maintain factory-programmed timing sequences, safety lockout thresholds, and diagnostic fault codes. Aftermarket boards often lack full fault-code compatibility, leading to misdiagnosis and callbacks.
• Install difficulty: 3/5 — Requires disconnecting 120V line power before servicing. Tools needed: #2 Phillips screwdriver, 1/4" nut driver, needle-nose pliers, and a smartphone to photograph all wiring harness positions before removal. Always verify correct wiring reconnection against the unit's wiring diagram label.
• Warranty: 1-year OEM manufacturer warranty. Ships same business day from our warehouse when ordered before cutoff.

Compatibility: Engineered as a direct drop-in replacement for the Carrier PY3GNA024040AA packaged unit. Verify your existing board's part number matches LH33WP007 before ordering. Have a question about fitment? Our HVAC parts specialists confirm compatibility before you buy — call or chat today. In stock and ready to ship.