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OEM Carrier DSI Control Board LH33WP002 for N6A48NG481451
OEM Carrier DSI Control Board LH33WP002 for N6A48NG481451
OEM Carrier DSI Control Board LH33WP002 for N6A48NG481451
OEM Carrier DSI Control Board LH33WP002 for N6A48NG481451
Carrier

OEM Carrier DSI Control Board LH33WP002 for N6A48NG481451

SKU: CARRIE-N6A48NG481451-CONTROL_BOARD-LH33WP002 Brand: Carrier
✓ Guaranteed to fit N6A48NG481451 — 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 N6A48NG481451

This is the genuine OEM Direct Spark Ignition (DSI) control board for the Carrier N6A48NG481451 packaged gas/electric unit. The DSI control board is the brain of the heating system — it sequences the inducer motor, spark igniter, gas valve, and flame verification in a precise timed cycle. When this board fails, common symptoms include a system that attempts ignition but locks out, a furnace that sparks repeatedly without lighting, error codes flashing on the board's LED indicator, or a complete loss of heat with no ignition attempt at all.

  • Specs: OEM Part Number LH33WP002 | Direct Spark Ignition (DSI) control | 24V control circuit compatible | Factory-programmed ignition timing and lockout logic matched to Carrier N6A48NG481451 specifications
  • OEM vs Generic: This is the factory-original Carrier control board. Generic or aftermarket boards may use different ignition timing sequences, lockout thresholds, or diagnostic LED patterns that do not match the original system design — potentially causing nuisance lockouts, unsafe operation, or voided equipment warranties. OEM is strongly recommended for ignition control applications.
  • Install Difficulty: 3/5 — Requires shutting off gas supply and disconnecting power before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, smartphone (to photograph all wiring harness connections before removal). Transfer wiring connectors one at a time to avoid miswiring. Verify all harness clips are fully seated before restoring power.
  • Warranty: 1-year OEM factory warranty against defects in materials and workmanship. In-stock and ships same business day from our warehouse.

Compatibility: Engineered as a direct factory replacement for Carrier model N6A48NG481451. Always cross-reference the OEM part number LH33WP002 printed on your existing board's label before ordering to confirm an exact match. Need help verifying fitment? Our HVAC parts specialists confirm compatibility before you order — no guesswork, no returns.

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 N6A48NG481451?
Yes. This is the factory-specified OEM control board for the Carrier N6A48NG481451. 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 N6A48NG481451?
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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