making it a reliable choice for infrared heaters and large-scale boiler systems

making it essential for systems requiring tight superheat control

a 5 MFD / 370V capacitor is required (sold separately)

If the lockout is caused by logic failure or relay degradation within the boiler control circuit

Lennox Y7736 MDE Inverter Module 321894-709 making it a reliable choiceTechnicians know that a failing Lennox Y7736 MDE Inverter Module or 17122000A10327 main control board can compromise the entire variable frequency drive (VFD) process. This critical Lennox HVAC replacement part is engineered to regulate the power output delivered to the compressor, ensuring precise motor speed control and thermal efficiency in high performance cooling units. As a foundational component of the Lennox MDE control system, this module