OEM Carrier Direct Spark Ignition (DSI) Control Board LH33WP002 for Model PY1PEB042060AAAA

This is the genuine OEM Carrier Direct Spark Ignition (DSI) Control Board (part number LH33WP002), the factory-specified replacement for the Carrier PY1PEB042060AAAA packaged gas/electric unit. This microprocessor-based board serves as the command center for your heating system — it controls the combustion sequence, blower and indoor motors, spark igniter, and gas valve, while continuously monitoring ignition timing, trial-for-ignition, flame sensing, and safety lockout. When this board fails, you may experience a complete no-heat condition, repeated ignition lockout faults, a system that sparks but never lights, or erratic blower operation that won't resolve with a simple reset.

• Specs: Direct Spark Ignition (DSI) microprocessor control board | 460V rated | Replaces legacy part LH33WP002A | Factory-matched timing and lockout parameters for Carrier PY packaged units
• OEM vs Generic: OEM boards use Carrier-programmed timing sequences and safety thresholds. Aftermarket boards may use universal timing that can cause nuisance lockouts, improper flame sensing, or voided equipment warranties — always choose OEM for control boards.
• Install difficulty: 3/5 — Shut off gas and disconnect power before beginning. Tools needed: 1/4" and 5/16" nut drivers, needle-nose pliers, phone/camera for wiring photos. Label and photograph all harness connectors before removal. Gas valve and flame sensor wiring must be reconnected to exact terminals.
• Warranty: 1-year OEM factory warranty against defects. Ships same business day from our warehouse when ordered before cutoff.

Compatibility: Designed for the Carrier PY1PEB042060AAAA packaged gas/electric unit. This board is also used across a broad range of Carrier, Bryant, and Payne packaged and split systems in the 48, 574, 580, 581, 582, 583, 588, 589, and PY model series — verify your unit's data plate and existing part number before ordering. Our HVAC parts specialists are available to confirm fitment before you buy.