Upon inspection, it was determined that the furnace required a new internal breaker to ensure optimal performance and safety. I carefully accessed the furnace's internal components, identified the faulty breaker, and safely removed it. After selecting the appropriate replacement breaker, I installed it precisely, ensuring all connections were secure and properly insulated. The furnace was then tested to confirm the new breaker was functioning correctly, restoring the system's reliability and efficiency. This meticulous process guarantees the furnace operates safely and effectively.