If you are experiencing intermittent ignition faults

Applying incorrect voltage to the ECM motor module will cause immediate component failure

the 100208241 is the current manufacturer-spec part number and is identical in form

this unit is the specified direct replacement for the original 243850 part number

Reznor 272742 Igniter Els PW 17895 If you are experiencing intermittentThe Reznor 272742 Igniter is a critical OEM replacement spark ignitor designed for high reliability sequence of operation in gas fired heating systems. This spark electrode assembly provides the high voltage discharge necessary to bridge the gap and ignite the main burner, ensuring consistent combustion in both residential and commercial units. As a veteran technician knows, a fouled or cracked ceramic insulator can lead to intermittent flame loss or