OEM Carrier Circuit Board (HH680001) for Model UPFLOW125U6019A

This is the genuine OEM Carrier circuit board — part number HH680001 — factory-specified for the Carrier UPFLOW125U6019A upflow gas furnace. The integrated furnace control (IFC) board is the central command hub of your heating system, orchestrating ignition sequencing, blower timing, inducer operation, safety lockout logic, and fault code diagnostics. When this board fails, the furnace may exhibit erratic behavior such as failing to start, locking out after multiple ignition attempts, running components out of sequence, or displaying continuous error codes with no recoverable reset.

• OEM Part Number: HH680001 | Also supersedes: 58GA680087, P771-1003, 75598, 58GA75598 — factory-direct replacement with zero compatibility compromise
• OEM vs Generic: This is the genuine Carrier-manufactured board, not a third-party clone. OEM boards retain original firmware logic, terminal layout, and diagnostic LED behavior — generic aftermarket boards frequently omit safety subroutines and carry no firmware guarantee
• Install Difficulty: 3/5 — Requires safe 120V system shutdown and full capacitor discharge before access. Label and photograph all wiring harness connections before removal. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Recommend professional installation for warranty preservation
• Warranty: 1-year OEM factory warranty on this board. Ships same business day from our warehouse — get your furnace back online fast

Compatibility: Direct OEM replacement for Carrier UPFLOW125U6019A upflow furnace. Always verify your unit's data plate and existing board part number before ordering — cross-reference superseded part numbers 58GA680087, P771-1003, 75598, and 58GA75598 for confirmed fitment. Our technical team is available to verify compatibility before you order.