Technicians typically look for water pooling in the inducer motor or the furnace tripping on a "pressure switch open" fault code

water droplets

ensuring the blower assembly maintains consistent indoor temperatures

it is engineered for stable operation within an operating temperature of 0

Viessmann 7831456 Radial Fan 326010-701 Technicians typically look for waterThe Viessmann 7831456 Radial Fan is a high performance RG148 assembly engineered specifically for Vitodens 200 W WB2B series gas condensing boilers. As a critical component for combustion air supply and flue gas extraction, this fan ensures the necessary static pressure to maintain efficient modulation across the boiler's firing range. Designed for the WB2B 45 and WB2B 60 models, it features a brushless EC motor and a durable die cast aluminum