including a high-temp resistant diaphragm and heavy-duty disc assembly

maintenance should focus on keeping the blower wheel clear of debris

maintaining factory specifications for resistance and output

the SEN0404 is a robust OEM replacement part that ensures the controller maintains optimal discharge air setpoints while preventing coil freeze-up or excessive discharge temperatures

the York capacitor requires immediate replacement

Tekmar Controls 406 Control 328140-751 including a high-temp resistant diaphragmThe tekmar 406 House Control is an advanced tN2 system controller specifically engineered for hydronic heating and cooling applications. This microprocessor based station manages two stage air to water or water to water heat pumps while seamlessly integrating a backup boiler or electric resistance heat source. Designed for professional HVAC contractors, it simplifies multi stage heat pump operation by providing precise outdoor temperature reset for