What causes a "No Spark" condition during the ignition trial

The two-position design streamlines installation

As a line pressure regulator

you should verify the specific wiring schematic of your burner housing to ensure the oil burner primary control terminal configurations align

Carrier KT63ZZ120 Bearing 321894-706 What causes a "No Spark"The Carrier KT63ZZ120 Bearing is a critical 1 11 16" bore OEM replacement part designed for high performance air handling and commercial rooftop units. As a veteran grade pillow block bearing, it provides the essential structural support and rotational stability required for heavy duty blower shaft assemblies. This specific HVAC blower motor bearing features a shielded and lubricated design (ZZ suffix), ensuring internal components are protected from