As a genuine furnace high limit switch

High Amperage Rating: Rated for 60 Amps to support high-draw electrical heating elements and fan motors

the B20 is the official updated version of the HUHAAB20

allowing for the switching of all three phases of a three-phase power supply or multiple circuits simultaneously

This symptom typically indicates a failure in the flame sensing circuit

Conbraco 29-202A-100 Valve R-410A As a genuine furnace highThe Conbraco 29 202A 100 is a high performance ASME Section I steam pressure relief valve engineered for critical overpressure protection in commercial boiler systems and industrial steam applications. Rated for a set pressure of 100 PSI with a flow capacity of 423 PPH (pounds per hour), this 29 Series valve features a 1 2" Male NPT inlet and a 1" Female NPT outlet. Designed for rugged durability, it utilizes a bronze body construction with stainless