OEM Carrier Ignition Control Board LH33WP007 for Model PY3GPAA48115AA

This OEM ignition control board (part number LH33WP007) is the factory-specified replacement for the Carrier PY3GPAA48115AA packaged gas/electric unit. The ignition control board serves as the central command module for the heating sequence — it orchestrates the inducer motor start, pressure switch verification, hot surface igniter activation, gas valve energization, and flame signal processing. When this board fails, the unit may enter a hard lockout, fail to initiate ignition, cycle off immediately after burner light-off, or display fault codes indicating a control board malfunction. Replacing it with the correct OEM part restores factory-engineered timing and safety logic.

• Specs: 24V control voltage | 60 Hz | OEM part number LH33WP007 | Cross-reference: LH33WP007A | Weight: 0.84 lbs
• OEM vs Generic: OEM boards use factory-matched firmware and component tolerances. Aftermarket boards may have timing deviations in flame sensing and ignition delay that cause nuisance lockouts or reduce system lifespan.
• Install difficulty: 3/5 — Turn off power and gas before beginning. Tools needed: 1/4" and 5/16" nut drivers, needle-nose pliers, phone or camera to photograph all wiring harness connections before disconnecting. Transfer wire harnesses one at a time to avoid miswiring. Reconnect power and verify ignition sequence.
• Warranty: 1-year OEM factory warranty. Ships same business day from our stocked warehouse.

Compatibility: Engineered for the Carrier PY3GPAA48115AA packaged unit. Verify your existing board's part number against LH33WP007 before ordering — confirm voltage and Hz ratings on the unit data plate. Our fitment team is available to verify compatibility before you purchase.