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OEM Carrier DSI Control Board LH33WP003 for PY3PNA024060AB
OEM Carrier DSI Control Board LH33WP003 for PY3PNA024060AB
OEM Carrier DSI Control Board LH33WP003 for PY3PNA024060AB
OEM Carrier DSI Control Board LH33WP003 for PY3PNA024060AB
Carrier

OEM Carrier DSI Control Board LH33WP003 for PY3PNA024060AB

SKU: CARRIE-PY3PNA024060AB-CONTROL_BOARD-LH33WP003 Brand: Carrier
✓ Guaranteed to fit PY3PNA024060AB — 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 PY3PNA024060AB

This OEM Direct Spark Ignition (DSI) control board is the factory-specified replacement for the Carrier PY3PNA024060AB packaged rooftop unit. As the brain of the combustion system, this microprocessor-based board orchestrates the entire heating sequence — controlling the spark igniter, gas valve, combustion blower, and indoor fan motor while continuously monitoring flame sensing, trial-for-ignition timing, and safety lockout conditions. When this board fails, common symptoms include a no-heat lockout, repeated ignition attempts with no flame establishment, erratic blower behavior, or a system that powers on but refuses to enter the heating cycle.

  • Part Number: LH33WP003 (also supersedes LH33WP003A) | Direct Spark Ignition (DSI) type | Microprocessor-based combustion sequencer | Factory-matched for Carrier rooftop applications
  • OEM vs Generic: This is a genuine OEM Carrier board with factory-calibrated ignition timing, trial periods, and lockout thresholds. Aftermarket boards may use wider tolerances that cause nuisance lockouts, premature shutdowns, or unsafe flame-sensing delays — especially in commercial rooftop environments with variable gas pressure.
  • Install Difficulty: 3/5 — Requires disconnecting 24V control wiring harnesses, ground leads, and multiple terminal connectors. Always photograph all wiring before removal. Tools needed: 1/4" and 5/16" nut drivers, needle-nose pliers, multimeter for 24V verification post-install. Recommended for qualified HVAC technicians only.
  • Warranty: 1-year OEM manufacturer warranty. In-stock and ships same business day from our warehouse — get your unit back online fast.

Compatibility: Designed for the Carrier PY3PNA024060AB packaged rooftop unit. This board replaces both the LH33WP003 and LH33WP003A revisions with no modifications required. Always verify your existing board's part number on the unit data plate or board label before ordering. Our fitment team is available to confirm compatibility 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 PY3PNA024060AB?
Yes. This is the factory-specified OEM control board for the Carrier PY3PNA024060AB. 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 PY3PNA024060AB?
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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