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OEM Carrier DSI Control Board LH33WP003 for PY3PNA036060AA
OEM Carrier DSI Control Board LH33WP003 for PY3PNA036060AA
OEM Carrier DSI Control Board LH33WP003 for PY3PNA036060AA
OEM Carrier DSI Control Board LH33WP003 for PY3PNA036060AA
Carrier

OEM Carrier DSI Control Board LH33WP003 for PY3PNA036060AA

SKU: CARRIE-PY3PNA036060AA-CONTROL_BOARD-LH33WP003 Brand: Carrier
✓ Guaranteed to fit PY3PNA036060AA — or your money back. Terms

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Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

OEM Carrier Direct Spark Ignition (DSI) Control Board LH33WP003 for Model PY3PNA036060AA

This is the factory OEM Direct Spark Ignition (DSI) control board for the Carrier PY3PNA036060AA packaged rooftop unit. As the brain of the heating system, this microprocessor-based board orchestrates the entire ignition sequence — controlling the combustion and blower motors, firing the spark igniter, opening the gas valve, and monitoring flame sensing and lockout logic. When this board fails, symptoms include a complete no-heat condition, repeated ignition lockouts, erratic blower behavior, or a unit that sparks but never establishes or holds a flame. Replacing it with the correct OEM board restores factory-precise timing and safety logic.

  • OEM Part Number: LH33WP003 (also supersedes LH33WP003A) | Direct Spark Ignition (DSI) type | Microprocessor-based combustion control | Factory-matched for Carrier PY3PNA036060AA
  • OEM vs Generic: This OEM board preserves exact ignition timing windows, trial-for-ignition durations, and safety lockout thresholds specified by Carrier engineering. Aftermarket boards may use looser tolerances that can cause nuisance lockouts or, worse, unsafe ignition timing — never compromise on a control board.
  • Install Difficulty: 3/5 — Requires shutting off 115V power and gas supply before beginning. Photograph all wiring harness connections before disconnecting. Tools needed: 1/4" and 5/16" nut driver, needle-nose pliers, multimeter. Verify all connector seating and restore power/gas before test firing. Recommend a qualified HVAC technician for this repair.
  • Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse — get your unit back online fast.

Compatibility: Direct OEM replacement for Carrier model PY3PNA036060AA packaged rooftop units. This board also fits select Carrier, Bryant, and Day & Night rooftop models using the LH33WP003/3A ignition control. Always verify your existing board's part number on the label before ordering. Need help confirming fitment? Our HVAC parts team is ready to verify before you buy.

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 PY3PNA036060AA?
Yes. This is the factory-specified OEM control board for the Carrier PY3PNA036060AA. 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 PY3PNA036060AA?
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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