Remove the protective cap and use the setting screw to dial in the desired pressure

or the control board displaying a "pressure switch stuck open" fault code

Robust Circuit Architecture: Engineered to handle high-amperage blower motor startups and igniter loads without premature relay failure

leading to premature failure of the hot surface ignitor

This evaporator temperature sensor acts as a critical monitor for outdoor coils

Siemens Building Technology QFA3230.FWSN Sensor 326058-758 Remove the protective cap andThe Siemens QFA3230. FWSN is a high precision room relative humidity sensor engineered for demanding building automation environments. Designed to interface seamlessly with controllers via 0 10Vdc or 4 20mA selectable outputs, this unit provides critical environmental data for variable air volume (VAV) systems and air handling units (AHUs). It offers a full 0 100% RH measurement range paired with a 10k? Type II thermistor for integrated temperature