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Carrier

OEM Carrier Control Board for Mini Split Model CAECOMZR003B00 Unit

SKU: carrier-control-board-caecomzr003b00 Brand: Carrier
$199.95

Order before 3PM CST — ships same day.
Standard delivery 2-5 business days. Express options at checkout.

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OEM Carrier Control Board for Mini Split Model CAECOMZR003B00 Unit

This OEM Carrier control board is the factory circuit board that controls operation, communication, and safety logic on the Carrier CAECOMZR003B00 unit. When the system won't start, displays error codes, loses thermostat communication, or relays fail to switch, a defective control board is typically to blame. This direct-fit replacement matches the original board's firmware, connector layout, relay arrangement, and mounting profile so your equipment sequences and self-diagnoses exactly as engineered. Installation is a moderate task suited to experienced DIYers and technicians: disconnect power at the breaker, take clear photos of all wiring, transfer each harness plug to its matching port, and mount the board on its standoffs. Most installs run 30-45 minutes. Confirm power is fully off and discharge static before handling the board. Genuine Carrier electronics provide the correct voltage tolerance and component protection that aftermarket boards can't guarantee. In stock and ships same-day on orders placed before 3PM CST. Bring your CAECOMZR003B00 back online quickly and safely with the right part.

Compatibility

This part is compatible with Carrier model CAECOMZR003B00.

Shipping

Same-day shipping before 3 PM CST. 30-day returns on uninstalled parts.

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 $75
  • 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 support@nationalhvacparts.com to initiate a return
  • Refunds processed within 5-7 business days

Frequently Asked Questions

Does this Control Board fit my Carrier Mini Split Model CAECOMZR003B00 Unit?
Yes. This is the factory-specified OEM control board for the Carrier Mini Split Model CAECOMZR003B00 Unit. 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 Mini Split Model CAECOMZR003B00 Unit?
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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