OEM Carrier Furnace Circuit Board (IFC) for Model UPFLOW080U4219 — Part HH680001

This is the genuine OEM Carrier integrated furnace control (IFC) board, factory part number HH680001, designed as the direct replacement for the Carrier UPFLOW080U4219 gas furnace. The control board is the command center of your heating system — it orchestrates the ignition sequence, manages inducer and blower fan timing, monitors all safety-circuit inputs, and communicates fault codes via onboard diagnostic LEDs. When this board fails, symptoms range from a completely unresponsive system and persistent lockout codes to erratic short-cycling, failed ignition attempts, or a blower that runs continuously without heat.

• Part Number: HH680001 | Also replaces legacy cross-references 58GA680087, P771-1003, 75598, and 58GA75598
• OEM vs Generic: This is a genuine factory OEM board — not a universal aftermarket substitute. OEM boards are pre-programmed to the exact timing, staging, and safety parameters required by Carrier UPFLOW080U4219 furnaces, ensuring full compatibility with all connected safeties, sensors, and thermostats without field reprogramming.
• Install Difficulty: 4/5 — Board replacement involves disconnecting 120V line-voltage wiring harnesses, low-voltage thermostat leads, and multiple safety-circuit terminals. Photograph all wiring before removal. Tools needed: Phillips and flathead screwdrivers, needle-nose pliers, multimeter for input voltage verification, and ESD wrist strap recommended to protect onboard electronics. We strongly recommend a licensed HVAC technician perform this repair.
• Warranty: 1-year OEM manufacturer warranty against defects in materials and workmanship. Ships same business day from our warehouse when ordered by 3 PM local time.

Compatibility: Engineered for the Carrier UPFLOW080U4219 upflow gas furnace. Verify your unit's model and serial data plate before ordering. Cross-reference part numbers 58GA680087, P771-1003, 75598, and 58GA75598 are confirmed replacements. Not sure it fits? Our HVAC parts specialists verify fitment before you order — contact us today and we'll get your furnace back online fast.