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OEM Carrier DSI Control Board LH33WP002 for N6A48NG480200
Carrier

OEM Carrier DSI Control Board LH33WP002 for N6A48NG480200

SKU: CARRIE-N6A48NG480200-CONTROL_BOARD-LH33WP002 Brand: Carrier

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Texas CMBL #19328542014
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OEM Carrier Direct Spark Ignition (DSI) Control Board LH33WP002 for Model N6A48NG480200

This is the OEM factory-specified Direct Spark Ignition (DSI) control board for the Carrier N6A48NG480200 packaged gas/electric unit. The DSI control board serves as the central command module for the heating sequence — managing ignition timing, flame verification, gas valve activation, inducer operation, and safety lockout logic. When this board fails, common symptoms include a complete no-heat condition, repeated ignition lockouts, failure to energize the gas valve, or erratic cycling that no thermostat adjustment can resolve. Fault codes displayed on the board's LED indicator are your first diagnostic clue before ordering.

  • Specs: OEM Part Number LH33WP002 | Direct Spark Ignition (DSI) control board | 24V control circuit compatible | Factory-programmed timing and lockout sequences for Carrier N6A48NG480200
  • OEM vs Generic: This is a genuine OEM Carrier board pre-programmed with exact ignition timing delays, trial-for-ignition periods, and lockout thresholds. Aftermarket boards may use generic firmware that shortens ignition trials or mismatches safety timings, risking nuisance lockouts or unsafe operation.
  • Install difficulty: 3/5 — Disconnect power and gas before beginning. Tools needed: 1/4" and 5/16" nut drivers, needle-nose pliers, multimeter, phone camera for wiring documentation. Photograph all harness connections before removal. Static discharge precautions recommended when handling the board.
  • Warranty: 1-year OEM factory warranty against defects. Orders placed before 3PM ship same business day from our stocked warehouse.

Compatibility: Engineered specifically for the Carrier N6A48NG480200 packaged unit. Verify your existing board's part number against LH33WP002 on the board label or unit wiring diagram before ordering. Not all N6A48 variants share the same DSI board — voltage configuration and staging must match. Our fitment team is available to confirm compatibility before you purchase. Order today and get your system back to full operation fast.

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 $75
  • 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 N6A48NG480200?
Yes. This is the factory-specified OEM control board for the Carrier N6A48NG480200. 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 N6A48NG480200?
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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