and Payne air conditioning and heat pump units

inspect the 1/4" barb connection for debris and check for cracks in the collection tubing or blockages in the flue vent before replacing the switch

this part is specifically a Natural Gas burner orifice

Optimized Combustion: Heavy-duty 3200 RPM motor provides the consistent static pressure required for safe flue gas venting

Fulton Boiler 2-40-000420 Relay R-22 and Payne air conditioning andThe Fulton Boiler 2 40 000420 Relay is a critical 120V low water safety relay designed for demanding steam and hydronic applications. As a genuine OEM Fulton replacement part, this component integrates directly with your boilers control circuit to provide precise low water cutoff (LWCO) monitoring and pump control. Maintaining proper water levels is essential to prevent dry firing and catastrophic pressure vessel failure; this relay ensures that if a