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OEM Carrier DSI Control Board LH33WP002 for N6D48NG480103
OEM Carrier DSI Control Board LH33WP002 for N6D48NG480103
OEM Carrier DSI Control Board LH33WP002 for N6D48NG480103
OEM Carrier DSI Control Board LH33WP002 for N6D48NG480103
Carrier

OEM Carrier DSI Control Board LH33WP002 for N6D48NG480103

SKU: CARRIE-N6D48NG480103-CONTROL_BOARD-LH33WP002 Brand: Carrier
✓ Guaranteed to fit N6D48NG480103 — 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 LH33WP002 for Model N6D48NG480103

This is the OEM factory-replacement Direct Spark Ignition (DSI) Control Board (part number LH33WP002) for the Carrier N6D48NG480103 packaged gas unit. The DSI control board is the brain of your furnace or packaged system's heating operation — it sequences the inducer motor, manages ignition spark timing, monitors flame sensing, and controls the gas valve. When this board fails, you may experience a complete no-heat condition, repeated ignition lockout faults, erratic cycling, or an inducer that runs continuously without ever attempting ignition. Replacing the board with a genuine OEM unit restores factory-calibrated timing and safety logic.

  • Specs: Direct Spark Ignition (DSI) board | OEM Part Number LH33WP002 | 24V control circuit compatible | Orchestrates inducer, spark, gas valve, and blower sequencing | Includes onboard diagnostic fault LED indicators
  • OEM vs Generic: Genuine Carrier OEM boards are programmed with exact ignition timing, flame-sensing thresholds, and safety lockout parameters for the N6D48NG480103. Aftermarket boards often use generic timing profiles that can cause nuisance lockouts, premature safety trips, or — in worst cases — unsafe ignition behavior.
  • Install Difficulty: 3/5 — Requires disconnecting 24V and line-voltage wiring harnesses. Tools needed: 1/4" nut driver, Phillips screwdriver, needle-nose pliers, and a multimeter to verify 24V supply before installation. Photograph or label all wiring connections before removal. Power down and lock out the unit at the disconnect before beginning work.
  • Warranty: 1-year OEM factory warranty against defects. In-stock and ships same business day from our warehouse.

Compatibility: This board is the direct OEM replacement for Carrier model N6D48NG480103 packaged gas units using DSI ignition. Always verify the part number LH33WP002 against your existing board's label before ordering. Our HVAC parts specialists are available to confirm fitment — reach out before you buy if you have any questions. Order now for same-day shipping and get your system back on heat 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 $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 N6D48NG480103?
Yes. This is the factory-specified OEM control board for the Carrier N6D48NG480103. 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 N6D48NG480103?
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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