The York 031-00955-000 Micro Board is a critical OEM replacement control board engineered for high-performance monitoring and logic execution in industrial and commercial HVAC systems

5 VDC represents 400 PSIA

The Maxitrol M411B9 is a high-precision modulator head plunger engineered specifically for the MR212 series of gas pressure regulators and modulating valves

ensuring long-term reliability for condensing units and heat pumps like the MXZ and PUZ series

Common indicators include erratic blower modulation

Siemens Industrial Controls 49SDPB5 Kit 322057-301 The York 031-00955-000 Micro BoardFor industrial HVACR and motor control applications requiring localized manual override, the Siemens 49SDPB5 Start Stop Pushbutton Sw Kit provides a robust field installation solution. This kit is specifically designed for NEMA Type 1 clamshell enclosures, housing Class 14, 22, 30, 40, and 43 starters as well as 3RE4, 3RT, 3RA, and 3RW series contactors. Featuring a heavy duty 22mm circular cutout design, the unit utilizes momentary 3 wire control