but verify existing hardware condition before installation

the Ranco A30-308 is a constant differential control designed for continuous monitoring and does not have a manual "off" click on the dial

As a critical HVAC high limit sensor

though it is standard practice for technicians to confirm seat torque during installation

Robertshaw 780-735 Ignition Module Els PW 17895 but verify existing hardware conditionThe Robertshaw 780 735 ignition module is a universal hot surface ignition (HSI) control designed for reliable gas furnace repair and system troubleshooting. This 120V AC intermittent pilot lockout module features a critical 60 second trial for ignition (TFI) period, ensuring safe burner startup sequences in residential and commercial heating applications. As a direct 780 735 replacement for the OEM 62 22821 01 and SP735, this control manages the