OEM Carrier Ignition Control Board LH33WP007 for Model PY3GNA036090NA

This is the genuine OEM ignition control board (part number LH33WP007) factory-specified for the Carrier PY3GNA036090NA packaged gas/electric unit. The ignition control board is the central command component of the heating system — it sequences the inducer motor, manages the hot surface igniter, monitors the flame sensor signal, and supervises all safety lockout logic. When this board fails, symptoms typically include a complete no-heat condition, repeated ignition lockouts, failure to prove flame (unit starts then shuts off within seconds), or total loss of furnace function with no error codes displayed.

• Specs: 24V operating voltage | 60 Hz | OEM part number LH33WP007 | Factory-matched design and firmware for Carrier PY3GNA036090NA
• OEM vs Generic: OEM boards carry factory-exact firmware, relay ratings, and safety thresholds. Aftermarket boards may use generic firmware that causes nuisance lockouts, improper staging, or premature failure — voiding equipment warranties.
• Install Difficulty: 3/5 — Shut off power at the disconnect and breaker before starting. Tools needed: 1/4" and 5/16" nut drivers, needle-nose pliers, phone camera (photograph all wiring harness connections before removal). Transfer wiring harnesses one connector at a time to avoid miswiring. Confirm no fault codes are stored before final startup.
• Warranty: 1-year OEM manufacturer warranty. In-stock and ships same business day from our warehouse.

Compatibility: Engineered as a direct drop-in replacement for Carrier model PY3GNA036090NA. Always verify the OEM part number on your existing board's label before ordering to confirm fitment. Have questions? Our HVAC parts specialists are available to verify compatibility before you buy — order with confidence and get your system back up and running fast.