The black with orange stripe color coding provides immediate circuit identification

preventing motor burnout by breaking the circuit at the end of the opening cycle

allowing technicians to serpentine the element across the airflow to eliminate "hot spots" or stratified air layers that single-point sensors might miss

reducing mechanical stress on the condenser fan motor bearings

Mitsubishi Electric T7WS46315 Controller Board 323055-751 The black with orange stripeThe Mitsubishi Electric T7WS46315 Controller Board is the definitive genuine OEM replacement for the discontinued T7WHA0315, specifically engineered for Mitsubishi PUZ and PUY series outdoor units. As a high performance HVAC circuit board, it serves as the central nervous system for your system diagnostics and power management. By utilizing FR4 fire resistant fiberglass construction, this board provides superior thermal management and signal integrity