Lennox 91J88 Control Board 320734-701 With a flow capacity of

With a flow capacity of 23

whereas a 2-pole contactor breaks both lines

ensuring compatibility with diverse HVACR power requirements

Designed as a critical field replacement part

the 2890099 pressure switch offers a simplified installation protocol by eliminating the need for manual field calibration

Lennox 91J88 Control Board 320734-701 With a flow capacity ofAs 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