Utica-Dunkirk FE3980B890 Pump 318423-701 A buzzing 24V HVAC contactor

A buzzing 24V HVAC contactor usually indicates low voltage from the transformer

this Honeywell pneumatic actuator is designed to operate V5011

When replacing a failed cell

Burners typically degrade due to moisture-induced oxidation

Utica-Dunkirk FE3980B890 Pump 318423-701 A buzzing 24V HVAC contactorThe Utica Dunkirk FE3980B890 is a specialized 120V FX3 FP pump engineered for reliable fluid circulation within high efficiency hydronic systems. This OEM replacement component is designed specifically for compatibility with CCB150 and CHB Series boilers (including CHB100, CHB130, and CHB150 models), ensuring seamless integration with the system's control logic. As a critical circulator pump, it maintains the precise flow rates required for optimal