The integrated digital display provides immediate visual confirmation of the HVAC zone temperature

Each subsequent full clockwise turn increases the set point by approximately 1

This specific model is Clockwise (CW) rotation as viewed from the discharge side

which are common causes of burner port clogging and uneven combustion in older heating systems

The spade-terminal configuration matches original factory HVAC electrical components

Lennox 91J88 Control Board 318518-761 The integrated digital display providesAs a seasoned technician, you know that a failing Lennox 91J88 Control Board is often the culprit behind intermittent ignition or irregular blower cycles. This ICM gas furnace control board is a high performance OEM replacement part designed to manage critical sequences, including ignitor warm up, gas valve timing, and inducer motor speed. Engineered for 120V and 24V applications, it integrates microprocessor based logic to ensure precise flame