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OEM Carrier DSI Control Board LH33WP003 for PY1PPB042090AAAA
OEM Carrier DSI Control Board LH33WP003 for PY1PPB042090AAAA
OEM Carrier DSI Control Board LH33WP003 for PY1PPB042090AAAA
OEM Carrier DSI Control Board LH33WP003 for PY1PPB042090AAAA
Carrier

OEM Carrier DSI Control Board LH33WP003 for PY1PPB042090AAAA

SKU: CARRIE-PY1PPB042090AAAA-CONTROL_BOARD-LH33WP003 Brand: Carrier
✓ Guaranteed to fit PY1PPB042090AAAA — 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 PY1PPB042090AAAA

This is the genuine OEM Direct Spark Ignition (DSI) control board for the Carrier PY1PPB042090AAAA packaged gas/electric unit. As the central intelligence of the heating system, this microprocessor-based board orchestrates the entire ignition and combustion sequence — controlling the spark igniter, gas valve, blower motor, and indoor fan motor while continuously monitoring flame sensing, trial-for-ignition timing, and safety lockout conditions. When this board fails, symptoms typically include a no-heat condition, repeated ignition lockouts, fault codes on the board's LED indicator, or erratic blower behavior that does not clear after a reset.

  • OEM Part Number: LH33WP003 (also supersedes LH33WP003A) | Direct Spark Ignition (DSI) type | Microprocessor-based combustion control | Factory-programmed timing and lockout sequences
  • OEM vs Generic: This factory Carrier board is pre-programmed with exact ignition timing, trial sequences, and lockout thresholds for the PY1PPB042090AAAA. Aftermarket boards (e.g., ICM291) can substitute but may require jumper configuration and do not carry Carrier's factory warranty.
  • Install Difficulty: 3/5 — Label and photograph all wiring harness connections before disconnecting. Power down and verify zero voltage at the board before handling. Tools needed: Phillips and flathead screwdrivers, needle-nose pliers, multimeter. Verify LED fault codes before and after installation to confirm resolution. Professional installation recommended.
  • Warranty: 1-year OEM factory warranty against manufacturing defects. Ships same business day from our climate-controlled warehouse.

Compatibility: Engineered as a direct OEM replacement for the Carrier PY1PPB042090AAAA packaged rooftop/gas-electric unit. Cross-references include LH33WP003A. Always verify your existing board's part number against the data plate before ordering. Need fitment confirmation? Our HVAC parts specialists verify compatibility before your order ships — 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 PY1PPB042090AAAA?
Yes. This is the factory-specified OEM control board for the Carrier PY1PPB042090AAAA. 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 PY1PPB042090AAAA?
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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