If the machine has power but the brew cycle won't trigger

By restoring the precise electrical link between the main control board and the compressor

The forged brass body and stainless steel stem assembly are built to withstand high static pressures up to 300 PSI

Extreme Durability: Heat-resistant alloy construction prevents warping and maintains orifice alignment over years of thermal cycling

Universal Compatibility: Works across a wide range of Amana and Goodman HVAC systems

Conbraco 4A-4A3-3AM Preventer Els PW 17895 If the machine has powerAs a direct replacement for the legacy 40 4A3 3AM, the Apollo Conbraco 4A 4A3 3AM is a 1 2" FNPT dual check backflow preventer engineered for reliable protection in residential and commercial water supply lines. Built with a rugged forged brass body, this DCAP4A series assembly utilizes an intermediate atmospheric port to vent pressure between check valves, preventing back siphonage and backpressure of non hazardous substances. This model features