OEM Carrier Ignition Control Board LH33WP007 for Model PY3GNA030040NA

This is the genuine OEM Carrier ignition control board (part number LH33WP007), the factory-specified replacement for the Carrier PY3GNA030040NA packaged unit. The ignition control board serves as the central nerve of the heating sequence — it orchestrates the inducer motor, hot surface igniter, gas valve, and flame sensor in precise timed steps. When this board fails, the system may attempt ignition and lock out, exhibit a no-heat condition, short-cycle, or fail to fire at all, often displaying a fault code on the system LED.

• Specs: 24V | 60 Hz | OEM part number LH33WP007 | Factory-matched design for Carrier packaged gas units | Weight: 0.84 lbs
• OEM vs Generic: This is a genuine Carrier OEM board — not an aftermarket substitute. OEM boards meet exact factory design-life testing standards, preserve equipment warranty, and maintain all agency listings and safety certifications. Aftermarket boards may omit safety interlocks or use lower-grade components.
• Install difficulty: 3/5 — Disconnect power at the disconnect box before servicing. Tools needed: 1/4" and 5/16" nut drivers, needle-nose pliers, phone or camera to photograph all wiring before removal. Transfer wire connections one at a time to avoid miswiring. Verify all interlocks and limit switches are reconnected before restoring power.
• Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Designed for the Carrier PY3GNA030040NA packaged gas unit. Always verify the part number on your existing board's label before ordering to confirm fitment. If you have any questions about compatibility, our HVAC parts specialists are standing by — order with confidence and get back up and running fast.