What should I check if a new transformer burns out immediately

This 40VA 120V to 24V transformer provides the necessary voltage step-down to power thermostats

meaning it mechanically switches both legs of the incoming power supply simultaneously

and WeatherKing gas furnaces

Always verify the gas burner orifice matches the fuel supply to prevent fire hazards

Robertshaw 1950-002 Thermopile Els PW 17895 What should I check ifThe Robertshaw 1950 002 Thermopile is a field proven millivolt pilot generator engineered for self powered gas control systems in wall furnaces, space heaters, and gas fireplaces. This 750mV thermopile features a high performance 48 inch lead length with a two lead spade connector configuration, ensuring a reliable electrical signal to the gas valve without external power. Built with a stainless steel outer jacket for superior heat resistance and a