Viessmann 7835169 Ionization Electr. 322838-754 The Bard 8620-238 Low Pressure

The Bard 8620-238 Low Pressure Board (MV4000) is a critical replacement control board designed for precise monitoring of refrigeration circuit protection in Bard HVAC units

It features a standard 3/4 inch NPT connection

Why is my burner failing to ignite despite having 120V at the primary

Industrial-Grade Build: Features a durable 48Y frame and CCW rotation (lead end) for long-term reliability in demanding environments

including glycol-based loops and high-temperature heating water

Viessmann 7835169 Ionization Electr. 322838-754 The Bard 8620-238 Low PressureThe Viessmann 7835169 Ionization Electrode is a critical flame sensing component engineered specifically for high capacity Vitodens 200 W B2HA condensing gas boilers. Designed to handle the rigorous thermal demands of the B2HA 399 and 530 models, this electrode provides the millivolt signal necessary for the burner control unit to verify flame presence safely and consistently. This kit includes the required electrode gasket to ensure a gas tight seal