What are the specs for this Control Board?

The correct replacement for Carrier model PY3PNA030040NA is this exact part. It is the factory-specified replacement with exact OEM specifications. Using a part with different specifications can cause equipment damage or void your warranty. You can verify this by checking the data plate on your Carrier equipment which lists the model number PY3PNA030040NA.

Is this control board compatible with Bryant or Payne systems too?

Many Carrier parts are cross-compatible with Bryant and Payne systems since all three brands are manufactured by Carrier Global Corporation. The same physical part is often used across multiple brand labels with different model numbers. To verify cross-compatibility, check your Bryant or Payne equipment service manual for cross-compatible part numbers, or contact info@nationalhvacparts.com with your model number for confirmation.

OEM Carrier DSI Control Board LH33WP003 for PY3PNA030040NA

Carrier

OEM Carrier DSI Control Board LH33WP003 for PY3PNA030040NA

Name: OEM Carrier DSI Control Board LH33WP003 for PY3PNA030040NA
Brand: Carrier
SKU: CARRIE-PY3PNA030040NA-CONTROL_BOARD-LH33WP003
Price: 575.00 USD
Availability: InStock

SKU: CARRIE-PY3PNA030040NA-CONTROL_BOARD-LH33WP003 Brand: Carrier

✓ Guaranteed to fit PY3PNA030040NA — or your money back. Terms

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OEM Carrier Direct Spark Ignition (DSI) Control Board LH33WP003 for Model PY3PNA030040NA

This is the genuine OEM Direct Spark Ignition (DSI) control board for the Carrier PY3PNA030040NA packaged unit. As the central brain of the heating system, this board manages the entire ignition sequence — energizing the inducer motor, proving the pressure switch, firing the spark igniter, and monitoring the flame sensor for a safe and confirmed burner light-off. When this board fails, common symptoms include a hard lockout with no heat, failure to advance through the ignition sequence, intermittent heating loss, or fault codes indicating ignition or flame-proving errors.

Specs: Direct Spark Ignition (DSI) control | 24 VAC control voltage | 208/230 VAC 60Hz system voltage | Replaces LH33WP003 and LH33WP003A
OEM vs Generic: This genuine Carrier OEM board is pre-programmed to factory ignition timing, lockout thresholds, and safety-shutdown logic. Aftermarket boards may use generalized timing that causes nuisance lockouts or fails to meet unit-specific safety requirements.
Install difficulty: 3/5 — Disconnect power and gas before servicing. Tools needed: ¼" nut driver, needle-nose pliers, phone/camera to photograph wiring harness before removal. Transfer all connector plugs one at a time to avoid miswiring. Verify correct lockout reset procedure after installation.
Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Engineered as the factory-specified replacement for Carrier model PY3PNA030040NA. Also cross-references to part number LH33WP003A. Always confirm your unit's control voltage and board part number on the equipment data label before ordering. Need fitment verification? Our HVAC parts specialists confirm compatibility before you buy — contact us today and get your unit back online 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

OEM Carrier DSI Control Board LH...

$575.00

Frequently Asked Questions

Does this Control Board fit my Carrier PY3PNA030040NA?

Yes. This is the factory-specified OEM control board for the Carrier PY3PNA030040NA. 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 PY3PNA030040NA?

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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OEM Carrier DSI Control Board LH33WP003 for PY3PNA030040NA

OEM Carrier Direct Spark Ignition (DSI) Control Board LH33WP003 for Model PY3PNA030040NA

Shipping Information

Return Policy

Frequently Asked Questions