When performing a Heil control board replacement

How do I test if the pressure switch is failing

the RIBXLCRA allows for precise monitoring while providing a 10 Amp rated relay contact

Complete Assembly: Includes the manifold kit

5 inch WC step opening

Omron MKS2PIN-AC24 Relay 321142-301 When performing a Heil controlThe Omron MKS2PIN AC24 is a professional grade general purpose relay engineered for high reliability industrial control and HVACR sequence circuits. As a veteran technician knows, the MK S series has been a staple in control panels for decades due to its robust 8 pin octal base design and consistent performance. This DPDT relay (Double Pole Double Throw) features a 24Vac coil and is rated for a 10 Amp switching capacity, making it a versatile choice