Same-day shipping before 3PM CST · 35,000+ OEM Parts · Texas CMBL & SAM.gov Registered · Government POs Accepted

Menu

Home Shop All Account Cart
OEM Carrier DSI Control Board LH33WP003 — PY1RPA060074AAWA
OEM Carrier DSI Control Board LH33WP003 — PY1RPA060074AAWA
OEM Carrier DSI Control Board LH33WP003 — PY1RPA060074AAWA
OEM Carrier DSI Control Board LH33WP003 — PY1RPA060074AAWA
Carrier

OEM Carrier DSI Control Board LH33WP003 — PY1RPA060074AAWA

SKU: CARRIE-PY1RPA060074AAWA-CONTROL_BOARD-LH33WP003 Brand: Carrier
✓ Guaranteed to fit PY1RPA060074AAWA — or your money back. Terms

OEM Guaranteed

Same-Day Ship

30-Day Returns

Secure Checkout

Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

OEM Carrier Direct Spark Ignition (DSI) Control Board LH33WP003 for Model PY1RPA060074AAWA

This is the genuine OEM Carrier Direct Spark Ignition (DSI) control board, part number LH33WP003, factory-specified for the Carrier PY1RPA060074AAWA packaged rooftop unit. The DSI control board is the operational nerve center of your unit's heating system — it manages spark ignition sequencing, gas valve activation, combustion blower and indoor fan motor timing, flame sensing, and safety lockout logic. When this board fails, symptoms typically include a no-heat condition, repeated ignition lockout faults, the unit short-cycling after ignition attempts, or status LED fault codes indicating a control board error. Replacing with the correct OEM board restores factory-programmed timing sequences and full diagnostic capability.

  • Part Type: Direct Spark Ignition (DSI) Integrated Furnace Control (IFC) Board | OEM Part # LH33WP003 | Manufacturer: Carrier
  • OEM vs Generic: This genuine Carrier OEM board preserves factory-programmed ignition timing, flame-sensing thresholds, and lockout logic. Aftermarket boards (e.g., ICM291) may substitute but can introduce timing variances that affect efficiency and may not support all onboard diagnostic LED fault codes specific to this model.
  • Install Difficulty: 3/5 — Disconnect power and gas before beginning. Tools needed: 1/4" and 5/16" nut drivers, needle-nose pliers, phone/camera for wiring documentation. Photograph all connector positions before removal. Swap connectors one-by-one to avoid miswiring. Cycle power and verify LED status code after install.
  • Warranty: 1-year OEM manufacturer warranty. In-stock and ships same business day from our warehouse.

Compatibility: Designed for the Carrier PY1RPA060074AAWA packaged rooftop gas/electric unit. Also fits select additional Carrier and Bryant rooftop models that use the LH33WP003 DSI control board — verify your unit's existing board part number against your data plate before ordering. Our fitment team is available to confirm compatibility prior to purchase.

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 OEM Carrier DSI Control Board LH33WP003 — PY1RPA060074AAWA?
Yes. This is the factory-specified OEM control board for the Carrier OEM Carrier DSI Control Board LH33WP003 — PY1RPA060074AAWA. 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 OEM Carrier DSI Control Board LH33WP003 — PY1RPA060074AAWA?
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.
Home Shop Search Account Cart
Fitment Guaranteed
MR
Mike Rivera
HVAC Parts Specialist — Online