OEM Carrier Ignition Control Board LH33WP007 for Model PY3GPAA42090AA

This is the genuine OEM Carrier ignition control board (part number LH33WP007), the factory-specified replacement for the Carrier PY3GPAA42090AA furnace. The ignition control board serves as the central brain of your furnace's heating sequence — managing the inducer motor, hot surface igniter, gas valve, and flame sensor in a precise timed cycle. When this board fails, common symptoms include a complete no-heat condition, repeated ignition lockouts, failure to advance past the inducer pre-purge stage, or erratic short-cycling that leaves the system unresponsive to thermostat calls.

• Specs: 24V | 60 Hz | OEM part number LH33WP007 | Cross-reference: 1068-15 | Replaces LH33WP007A | Weight: 0.84 lbs | Factory-tested and matched to Carrier tolerances
• OEM vs Generic: This is a genuine Carrier OEM board — not an aftermarket substitute. OEM boards use factory-validated firmware and component ratings. Aftermarket boards may use off-spec relays or timing circuits that cause intermittent faults and void system warranties.
• Install difficulty: 3/5 — Disconnect power and gas before beginning. Tools needed: 1/4" and 5/16" nut drivers, needle-nose pliers, multimeter, and phone/camera to document all wiring connections before removal. Label every connector. A wiring diagram is typically affixed to the inside of the furnace door.
• Warranty: 1-year OEM factory warranty. In-stock and ships same business day from our warehouse.

Compatibility: Designed as the direct OEM replacement for the Carrier PY3GPAA42090AA furnace. Also cross-references with Bryant and Payne models sharing the 1068-15 board platform. Always verify your existing board's part number against LH33WP007 or LH33WP007A before ordering. Have questions about fitment? Our HVAC parts specialists verify compatibility before you buy — contact us today and get your system back online fast.