OEM Carrier Circuit Control Board HH680001 for Model U19X175U60B

This is the genuine OEM Carrier circuit board (part number HH680001), the factory-specified replacement for the Carrier U19X175U60B. The control board serves as the central command center of your HVAC system — it orchestrates power delivery to the inducer motor, igniter, gas valve, blower motor, and all safety switches. When this board fails, symptoms include a system that won't power on, repeated lockout fault codes, erratic cycling, or individual components that stop responding despite receiving 24V signals. A faulty board is often the last diagnosis after other components have been ruled out.

• OEM Part Number: HH680001 | Also replaces: 58GA680087, P771-1003, 75598, 58GA75598 | Genuine Carrier factory-original board
• OEM vs Generic: This is a genuine OEM Carrier board — not an aftermarket clone. OEM boards are factory-programmed with the exact timing sequences, fault logic, and component tolerances required for the U19X175U60B. Aftermarket boards risk mistimed ignition sequences, false lockouts, and voided equipment warranties.
• Install Difficulty: 4/5 — Disconnect power at the breaker and confirm 0V before touching any terminals. Tools needed: Phillips and flathead screwdrivers, needle-nose pliers, phone/camera to photograph all wiring connections before removal. A multimeter is strongly recommended to confirm 24V control circuit integrity before condemning the board. Professional installation is advised.
• Warranty: 1-year OEM factory warranty. In-stock and ships same business day from our warehouse.

Compatibility: Designed for the Carrier U19X175U60B. Cross-references include legacy part numbers 58GA680087, P771-1003, 75598, and 58GA75598 — verify your existing board's part number against these before ordering. Not sure it fits? Our HVAC parts specialists verify fitment at no charge before you buy. Order today for same-day dispatch.