Daikin-McQuay 7500002 Main Board 321142-301 High-temperature terminal and rod construction

High-temperature terminal and rod construction for long-term resistance to oxidation

For older standing pilot systems

this unit is built to the exact specifications required by Lochinvar and A

providing the heavy-duty electrical switching required to energize defrost heaters and manage reversing valve transitions

Isolate the transformer and check for continuity across the windings

Daikin-McQuay 7500002 Main Board 321142-301 High-temperature terminal and rod constructionThe Daikin McQuay 7500002 Main Board, also identified as the A1P Main Board, serves as the primary system controller for specific commercial HVAC units, including select McQuay Maverick II and Daikin MPS rooftop units. This OEM microprocessor control board manages critical system logic, integrated cooling heating functions, and safety interlocks for precision climate control. As a direct replacement part, it ensures seamless HVAC system communication