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OEM Carrier DSI Control Board LH33WP003 for PY1RJA060115AAWB
OEM Carrier DSI Control Board LH33WP003 for PY1RJA060115AAWB
OEM Carrier DSI Control Board LH33WP003 for PY1RJA060115AAWB
OEM Carrier DSI Control Board LH33WP003 for PY1RJA060115AAWB
Carrier

OEM Carrier DSI Control Board LH33WP003 for PY1RJA060115AAWB

SKU: CARRIE-PY1RJA060115AAWB-CONTROL_BOARD-LH33WP003 Brand: Carrier
✓ Guaranteed to fit PY1RJA060115AAWB — 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 LH33WP003 for Model PY1RJA060115AAWB

This is the factory OEM Direct Spark Ignition (DSI) control board for the Carrier PY1RJA060115AAWB packaged gas/electric unit. As the brain of the heating system, this microprocessor-based board controls combustion sequencing, manages blower and indoor motor timing, fires the spark igniter, operates the gas valve, and continuously monitors flame sensing and safety lockout logic. When this board fails, symptoms typically include a no-heat condition, repeated ignition lockout faults, short cycling, or a furnace that sparks but never lights — or one that lights briefly and immediately shuts down.

  • OEM Part Number: LH33WP003 (also supersedes LH33WP003A) | Direct Spark Ignition (DSI) board | Factory-specified for Carrier PY1RJA060115AAWB packaged units
  • Function & Features: Microprocessor-based DSI control; manages trial-for-ignition timing, flame-sensing rod monitoring, blower motor on/off delays, and automatic safety lockout with fault code output
  • OEM vs Generic: Genuine Carrier OEM boards are pre-programmed with exact timing parameters for your unit. Aftermarket boards may use generic timing profiles that cause nuisance lockouts, reduced efficiency, or premature heat exchanger stress — always specify OEM for commercial packaged equipment.
  • Install Difficulty: 3/5 — Disconnect power and gas before servicing. Tools needed: 1/4" and 5/16" nut drivers, needle-nose pliers, phone/camera to photograph all wiring harness connections before removal. Transfer wiring connector by connector. Verify all harness clips are fully seated before restoring power.
  • Warranty: 1-year OEM factory warranty. In stock — ships same business day from our warehouse.

Compatibility: Designed as the factory-specified DSI control board for the Carrier PY1RJA060115AAWB packaged gas/electric unit. Verify your existing board's part number (LH33WP003 or LH33WP003A) against the unit data plate before ordering. Not sure it fits? Our HVAC parts specialists verify fitment before you buy — contact us today and we'll confirm compatibility 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 PY1RJA060115AAWB?
Yes. This is the factory-specified OEM control board for the Carrier PY1RJA060115AAWB. 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 PY1RJA060115AAWB?
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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