Same-day shipping before 3PM CST · 35,000+ OEM Parts · Texas CMBL & SAM.gov Registered · Government POs Accepted

Menu

Home Shop All Account Cart
OEM Carrier DCV Economizer Control Board Kit HH63AW001 — TCHC1850HE403
Carrier

OEM Carrier DCV Economizer Control Board Kit HH63AW001 — TCHC1850HE403

SKU: CARRIE-TCHC1850HE403397-CONTROL_BOARD-HH63AW001 Brand: Carrier
✓ Guaranteed to fit TCHC1850HE403 — or your money back. Terms

OEM Guaranteed

Same-Day Ship

30-Day Returns

Secure Checkout

Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

OEM Carrier DCV Economizer Control Board Kit HH63AW001 for Model TCHC1850HE403397

This is a genuine OEM Carrier Economizer Control Board Kit (part #HH63AW001), the factory-specified replacement for the Carrier TCHC1850HE403397 commercial rooftop unit. The DCV (Demand Control Ventilation) economizer control board is the intelligent hub of your unit's free-cooling and ventilation strategy — it continuously monitors outdoor air conditions, CO₂ levels (when a DCV sensor is present), and damper position to maximize energy savings while maintaining code-compliant indoor air quality. When this board fails, you may see symptoms including: economizer damper stuck open or closed, free-cooling lockout faults, loss of DCV response, or the unit defaulting to minimum ventilation with no outdoor-air modulation.

  • Part Number & Cross-Reference: OEM Carrier HH63AW001 | Cross-references W7212A1017 | Factory Authorized Part — exact drop-in replacement with no modifications required.
  • Specs: Voltage: 120V | Frequency: 60Hz | Board Dimensions: ~4" × 4" × 2" | Weight: 1 lb | All inputs Class 2 | Compatible with DCV CO₂ sensor inputs for demand-controlled ventilation applications.
  • OEM vs Generic: OEM boards ship pre-configured to Carrier factory specifications, ensuring accurate sensor calibration, damper stroke timing, and fault-code communication with the main control board. Third-party substitutes often lack DCV logic firmware and may void unit warranty.
  • Install Difficulty: 4/5 — Commercial rooftop board replacement. Requires lockout/tagout procedure, disconnecting 24V and 120V control wiring harnesses, and verifying DCV sensor wiring post-install. Tools needed: insulated screwdrivers, nut driver set, multimeter, wiring diagram from unit service label. Recommended for qualified commercial HVAC technicians only.
  • Warranty: 1-year OEM factory warranty against defects. Ships same business day from our stocked warehouse.

Compatibility: Engineered as a direct OEM replacement for the Carrier TCHC1850HE403397 commercial rooftop unit. Always verify your existing board's part number on the component label before ordering. Cross-reference W7212A1017 is also superseded by HH63AW001. In stock and ready to ship — order before 3 PM for same-day dispatch. Questions about fitment? Our HVAC parts specialists verify compatibility before you buy.

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 OEM Carrier DCV Economizer Control Board Kit HH63AW001 — TCHC1850HE403?
Yes. This is the factory-specified OEM control board for the Carrier OEM Carrier DCV Economizer Control Board Kit HH63AW001 — TCHC1850HE403. 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 OEM Carrier DCV Economizer Control Board Kit HH63AW001 — TCHC1850HE403?
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.
Home Shop Search Account Cart
Fitment Guaranteed
MR
Mike Rivera
HVAC Parts Specialist — Online