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OEM Carrier DSI Control Board LH33WP002 for PY1REA048074AAWA
OEM Carrier DSI Control Board LH33WP002 for PY1REA048074AAWA
OEM Carrier DSI Control Board LH33WP002 for PY1REA048074AAWA
OEM Carrier DSI Control Board LH33WP002 for PY1REA048074AAWA
Carrier

OEM Carrier DSI Control Board LH33WP002 for PY1REA048074AAWA

SKU: CARRIE-PY1REA048074AAWA-CONTROL_BOARD-LH33WP002 Brand: Carrier
✓ Guaranteed to fit PY1REA048074AAWA — or your money back. Terms

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Texas CMBL #19328542014
SAM.gov Registered
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OEM Carrier Direct Spark Ignition (DSI) Control Board LH33WP002 for Model PY1REA048074AAWA

This is the genuine OEM Carrier Direct Spark Ignition (DSI) control board, part number LH33WP002, factory-specified for the Carrier PY1REA048074AAWA packaged unit. The DSI control board is the nerve center of your unit's heating sequence — it manages ignition timing, monitors the flame sensor signal, sequences the gas valve, and enforces safety lockouts. When this board fails, common symptoms include a complete no-heat condition, repeated ignition lockouts, burners that light and immediately shut off, or an unresponsive system that shows no signs of initiating a heating cycle. Replacing the board with the correct OEM part restores factory-programmed timing and safety logic that aftermarket boards may not replicate precisely.

  • Specs: Direct Spark Ignition (DSI) control board | 460V application | Genuine Carrier OEM part | Replaces legacy part number LH33WP002A
  • OEM vs Generic: OEM boards carry factory-programmed ignition timing, safety lockout sequences, and diagnostic fault codes specific to your unit. Generic or aftermarket boards may deviate in timing tolerances, risking repeated nuisance lockouts or voiding equipment warranty.
  • Install Difficulty: 3/5 — Disconnect and lock out all power before starting. Tools needed: 1/4" and 5/16" nut drivers, needle-nose pliers, a phone or camera to document all wiring connections before removal. Label every wire harness connector. A multimeter is recommended to verify 24V control circuit integrity after installation.
  • Warranty: 1-year OEM manufacturer warranty. Ships same business day from our warehouse when ordered before cutoff.

Compatibility: Designed for the Carrier PY1REA048074AAWA packaged unit. Also used across Carrier, Bryant, and Payne models in the 48, 574, 580, 581, 582, 583, 588, 589, and PY series — always verify your unit's data plate and existing board part number before ordering. Our HVAC parts specialists are available to confirm fitment. Order now — in stock and ships today.

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 PY1REA048074AAWA?
Yes. This is the factory-specified OEM control board for the Carrier PY1REA048074AAWA. 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 PY1REA048074AAWA?
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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