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OEM Carrier DSI Control Board LH33WP003 for PY3PPA036090NA
OEM Carrier DSI Control Board LH33WP003 for PY3PPA036090NA
OEM Carrier DSI Control Board LH33WP003 for PY3PPA036090NA
OEM Carrier DSI Control Board LH33WP003 for PY3PPA036090NA
Carrier

OEM Carrier DSI Control Board LH33WP003 for PY3PPA036090NA

SKU: CARRIE-PY3PPA036090NA-CONTROL_BOARD-LH33WP003 Brand: Carrier
✓ Guaranteed to fit PY3PPA036090NA — 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 PY3PPA036090NA

This is the factory OEM Direct Spark Ignition (DSI) control board for the Carrier PY3PPA036090NA packaged unit. As the nerve center of the heating system, this board orchestrates every stage of the ignition sequence — energizing the inducer, proving the pressure switch, triggering the direct spark igniter, verifying flame establishment, and opening the gas valve. When this board fails, symptoms include a complete no-heat condition, repeated ignition lockouts, failure to advance through the heating cycle, or erratic error codes on diagnostic LEDs. Replacing it with the correct OEM part ensures all timing sequences, fault thresholds, and safety shutdowns are factory-matched.

  • Specs: 24 VAC control circuit | 208/230 VAC 60 Hz line voltage input | Direct Spark Ignition (DSI) sequence | Replaces LH33WP003 and LH33WP003A
  • OEM vs Generic: OEM boards preserve exact ignition timing intervals and safety lockout thresholds. Aftermarket boards may deviate on trial-for-ignition timing, risking nuisance lockouts or — in rare cases — unsafe ignition sequences. OEM is always the recommended choice for packaged commercial units.
  • Install Difficulty: 3/5 — Disconnect power and gas before beginning. Label all low-voltage wiring harness connections before removal. Tools needed: 1/4" and 5/16" nut drivers, needle-nose pliers, smartphone for wiring photo documentation. Firmware or DIP switch settings (if present) should be matched to the original board before power-up.
  • Warranty: 1-year OEM factory warranty against defects in materials and workmanship. Ships same business day from our stocked warehouse.

Compatibility: Designed for the Carrier PY3PPA036090NA packaged unit. Also cross-references OEM suffix variant LH33WP003A. Verify your unit's data plate and existing board part number before ordering. Our HVAC parts specialists are available to confirm fitment — contact us before you order if you have any questions. In stock and ready to ship 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 PY3PPA036090NA?
Yes. This is the factory-specified OEM control board for the Carrier PY3PPA036090NA. 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 PY3PPA036090NA?
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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