OEM Carrier Control Board LH33WP007 for Model PY4GPAB36090AA

The LH33WP007 is the factory OEM integrated furnace control (IFC) board designed specifically for the Carrier PY4GPAB36090AA packaged gas/electric unit. This board acts as the central brain of the system — sequencing the inducer motor, hot surface igniter, gas valve, blower, and all safety circuits in precise coordination. When the control board fails, the unit may exhibit a wide range of symptoms including complete no-heat lockout, erratic or repeated cycling, failure to initiate the ignition sequence, or unresponsive blower operation. Fault codes stored on the board (if accessible via LED blink codes) can help confirm failure before replacement.

• Specs: OEM Part Number LH33WP007 | Factory-direct IFC board | 24V control circuit compatible | Engineered for Carrier PY4GPAB36090AA packaged gas/electric unit
• OEM vs Generic: This is a genuine OEM Carrier board — not an aftermarket substitute. OEM boards carry factory-programmed timing sequences and safety lockout logic matched exactly to your unit. Aftermarket boards may have incompatible firmware, incorrect delay timings, or missing safety lockout features that can void equipment warranties.
• Install Difficulty: 3/5 — Intermediate. 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 prior to removal. Take note of DIP switch settings on the old board and mirror them exactly on the new one.
• Warranty: 1-year OEM manufacturer warranty. In-stock and ships same business day from our warehouse.

Compatibility: Engineered as the direct OEM replacement for Carrier model PY4GPAB36090AA packaged gas/electric units. Always verify the part number printed on your existing board's label before ordering to confirm fitment. Not sure if this is the right part? Our HVAC parts specialists are available to verify compatibility before you buy — same-day shipping available on all in-stock orders.