Lochinvar & A.O. Smith 100165924 Ignitor Els PW 17895 What causes a "Pressure Switch

What causes a "Pressure Switch Stuck Open" error

it is still best practice to avoid touching the heating element

as board revisions can vary

Standard 325-3 models often require a separate 12A09 vent limiting device for indoor use to meet code without piping a vent line

Designed specifically as a 5-cell heat exchanger gasket

Lochinvar & A.O. Smith 100165924 Ignitor Els PW 17895 What causes a "Pressure SwitchThe Lochinvar & A. O. Smith 100165924 Ignitor is a critical combustion component engineered for high output gas fired heating systems. Specifically designed for compatibility with the Lochinvar Crest series (FBN2500FBN3500) and FTXL models (FTX400850), this ignitor ensures rapid heat up and stable flame initiation in commercial boiler parts applications. Also known by the PLT30004 cross reference, this 1 2" NPT assembly is a direct replacement for