York 031-02479-001 Relay Board 318973-401 The robust plastic construction is

The robust plastic construction is dishwasher-safe

this pilot burner ensures a consistent flame for main burner ignition

tight shutoff in pneumatic systems and vacuum service

The inverted flare connection and durable bracket design allow for drop-in replacement in compatible furnaces and boilers

Common Questions: Does this board replace the PCBBF121

York 031-02479-001 Relay Board 318973-401 The robust plastic construction isThe York 031 02479 001 Relay Board is a critical OEM replacement component designed for Mustang heating and cooling systems. As a veteran grade HVAC control board, it functions as the central logic unit, managing and directing high voltage electrical signals to ensure precise sequencing and timing of furnace and air conditioning operations. This Mustang control relay board is engineered with integrated circuitry that switches circuits in response to