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OEM Carrier Control Board HH680001 for UPFLOW100U4819A
OEM Carrier Control Board HH680001 for UPFLOW100U4819A
OEM Carrier Control Board HH680001 for UPFLOW100U4819A
OEM Carrier Control Board HH680001 for UPFLOW100U4819A
Carrier

OEM Carrier Control Board HH680001 for UPFLOW100U4819A

SKU: CARRIE-UPFLOW100U4819A-CONTROL_BOARD-HH680001 Brand: Carrier
✓ Guaranteed to fit UPFLOW100U4819A — or your money back. Terms

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Texas CMBL #19328542014
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OEM Carrier Circuit Control Board HH680001 for Model UPFLOW100U4819A

This is the genuine OEM Carrier circuit board (part number HH680001), the factory-specified replacement for the Carrier UPFLOW100U4819A upflow gas furnace. The integrated furnace control (IFC) board is the operational brain of your heating system — it sequences ignition, manages blower fan timing, monitors safety inputs from pressure switches and limit controls, and communicates status to your thermostat. When this board fails, you may experience complete system shutdown, failure to ignite, erratic blower behavior, or a furnace that starts a heating cycle but immediately locks out. Fault LED codes on the board itself are the fastest path to diagnosis.

  • Specs: OEM Part Number HH680001 | Cross-reference: 0854680 | Application: Upflow gas furnace control board | Compatible voltage: 120V/24V control circuit | Multi-stage diagnostic LED fault codes
  • OEM vs Generic: This is a genuine Carrier OEM board — not an aftermarket substitute. OEM boards carry exact firmware, relay ratings, and terminal configurations engineered for your specific unit. Generic boards risk mis-sequencing ignition or misreading safety inputs, which can cause nuisance lockouts or, worse, unsafe operation.
  • Install Difficulty: 3/5 — Disconnect power and gas before beginning. Photograph all wiring harness connections before removal. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, smartphone (for wiring photos), multimeter to confirm 24V control circuit is intact post-install. A qualified HVAC technician is recommended for this repair.
  • Warranty: 1-year OEM factory warranty. In stock — ships same business day from our warehouse when ordered before cutoff.

Compatibility: Designed as a direct OEM replacement for the Carrier UPFLOW100U4819A upflow gas furnace. Verify your existing board's part number (HH680001 or cross-reference 0854680) against your unit's data plate before ordering. Not sure it fits? Our HVAC parts specialists verify fitment before every order — contact us 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 UPFLOW100U4819A?
Yes. This is the factory-specified OEM control board for the Carrier UPFLOW100U4819A. 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 UPFLOW100U4819A?
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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