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OEM Carrier DSI Control Board LH33WP003 for PY2PNB048115AA
OEM Carrier DSI Control Board LH33WP003 for PY2PNB048115AA
OEM Carrier DSI Control Board LH33WP003 for PY2PNB048115AA
OEM Carrier DSI Control Board LH33WP003 for PY2PNB048115AA
Carrier

OEM Carrier DSI Control Board LH33WP003 for PY2PNB048115AA

SKU: CARRIE-PY2PNB048115AA-CONTROL_BOARD-LH33WP003 Brand: Carrier
✓ Guaranteed to fit PY2PNB048115AA — or your money back. Terms

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Texas CMBL #19328542014
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Govt POs Accepted

OEM Carrier Direct Spark Ignition (DSI) Control Board LH33WP003 for Model PY2PNB048115AA

This is the factory OEM Direct Spark Ignition (DSI) control board for the Carrier PY2PNB048115AA packaged rooftop unit. As the brain of the heating system, this integrated furnace control (IFC) board orchestrates every step of the ignition sequence — from inducer startup and spark ignition through gas valve activation, flame verification, and blower motor operation. When this board fails, symptoms typically include a no-heat condition, repeated ignition lockout, continuous spark without flame establishment, or LED fault codes indicating a failed ignition trial. If your unit starts an ignition attempt and then locks out after 2–3 tries, or if the heating sequence never initiates at all, this board is the most common root cause.

  • Part Number: LH33WP003 | Direct Spark Ignition (DSI) Integrated Furnace Control Board | Factory Carrier OEM specification
  • OEM vs Generic: This OEM board is manufactured to Carrier's exact design standards, ensuring full pin-for-pin compatibility and preserving system warranty integrity. Aftermarket boards may require jumper reconfiguration and can introduce timing mismatches that cause nuisance lockouts or premature heat exchanger stress.
  • Install Difficulty: 3/5 — Recommended for licensed HVAC technicians. Shut off all power and gas before beginning. Photograph all harness connections before removal. Tools needed: ¼" nut driver, flathead screwdriver, needle-nose pliers, multimeter. Verify LED fault code sequence before condemning the board.
  • Warranty: 1-year OEM factory warranty against defects. Ships same business day from our warehouse when ordered before cutoff.

Compatibility: Engineered for the Carrier PY2PNB048115AA packaged rooftop gas/electric unit. Always cross-reference the part number on your existing board's label before ordering to confirm fitment. Need help verifying compatibility? Our HVAC parts specialists are available to confirm the correct part for your unit before you order — no guesswork required.

Shipping Information

  • Orders placed before 3PM CST ship same business day
  • Standard delivery: 2-5 business days
  • Express shipping available at checkout
  • Free shipping on orders over $99
  • Tracking number emailed upon shipment

Return Policy

  • 30-day returns on unused parts in original packaging
  • Electrical parts (capacitors, contactors, control boards) are final sale once installed
  • Email info@nationalhvacparts.com to initiate a return
  • Refunds processed within 5-7 business days

Frequently Asked Questions

Does this Control Board fit my Carrier PY2PNB048115AA?
Yes. This is the factory-specified OEM control board for the Carrier PY2PNB048115AA. It is a direct drop-in replacement that fits without modification. Always verify the model number on your equipment nameplate before ordering.
How do I replace the control board on my Carrier PY2PNB048115AA?
Difficulty: Advanced (1–2 hrs)
Step 1: Turn off breaker. Step 2: PHOTOGRAPH all wire connections before touching anything. Step 3: Label each wire with tape. Step 4: Disconnect all wires, remove old board. Step 5: Mount new board, reconnect all wires matching your photo exactly. Step 6: Restore power and test all modes. Exact part number match is critical.
My HVAC system is completely dead. What could be wrong?
Completely dead HVAC (no LED on board) = failed control board or blown fuse. Check board fuse first (3A or 5A, costs $1–$5). If fuse is good and board has power but no LED, board is dead. Always photograph wiring before replacing.
Is this control board compatible with Bryant or Payne too?
Many Carrier parts are cross-compatible with Bryant and Payne since all three brands are manufactured by Carrier Global Corporation. The same physical part is often used across brand labels with different model numbers. To verify: check your Bryant or Payne equipment service manual for cross-compatible part numbers, or email info@nationalhvacparts.com with your model number.
Should I use OEM or aftermarket for my Carrier control board?
OEM essential. Control boards are model-specific with precise firmware and connector layouts. Aftermarket boards rarely match all functions and can cause intermittent failures or safety issues. Always match the exact OEM part number.
How fast does National HVAC Parts ship?
Orders placed before 3:00 PM CST ship the same business day. Standard delivery is 2–5 business days anywhere in the continental United States. Express shipping available at checkout. We ship from Houston, TX to all 50 states. 30-day return policy on all parts.
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Mike Rivera
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