OEM Carrier Ignition Control Board LH33WP007 for Model PY4GPAA30040AA

This OEM ignition control board (IGC board) is the factory-authorized replacement for the Carrier PY4GPAA30040AA packaged gas/electric unit. The IGC board is the central command module for the heating sequence — it orchestrates the inducer motor, hot surface igniter, gas valve, and flame sensor in precise timed steps. When this board fails, symptoms include a hard lockout with no ignition attempt, repeated short-cycling, failure to prove flame, or a completely unresponsive heating system even with a functioning thermostat call for heat.

• Specs: 24V | 60 Hz | OEM Part Number LH33WP007 | Cross-references: 1068-15, 1068-83-119A, 1836V03 | Weight: 0.84 lbs
• OEM vs Generic: This is the factory-original Carrier board with pre-calibrated timing sequences for safe ignition and lockout logic. Aftermarket boards may use generic timing profiles that can cause nuisance lockouts or unsafe retry behavior — always prefer OEM on gas-fired equipment.
• Install difficulty: 3/5 — Requires safe gas system shutdown and power lockout before starting. Tools needed: flathead and Phillips screwdrivers, ¼" nut driver, needle-nose pliers, and a multimeter for input voltage verification. Photograph all wiring harness connections before removal. Consult the unit's wiring diagram on the blower compartment door.
• Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Direct OEM replacement for Carrier PY4GPAA30040AA packaged gas/electric units. Cross-references include board numbers 1068-15, 1068-83-119A, and 1836V03. Always verify your existing board's part number against your unit's data plate before ordering. Our fitment team is available to confirm compatibility prior to purchase.