F-codes, igniters and built-ins
Most GE ranges and wall ovens show F-codes when something fails, and refrigerators and laundry have service modes that run each component. That is our starting point; a meter reading settles it. An F3 on a GE oven, for example, points to the temperature sensor circuit, which may be the sensor itself, its wiring harness or the control board reading it. A sensor is one of the cheaper oven repair jobs and a board is not, so the test matters.
GE ranges are among the most common appliances we repair. Gas JGB models lose igniter strength over time, so the oven takes longer and longer to light. Electric JB models burn out bake elements. Both are quick repairs with the right part on hand, and we keep them on the van. The cooktop burners on those ranges are a separate gas stove repair, usually a cracked igniter or a clogged port.
Profile, Café and Monogram units deserve more care. Built-in refrigerators and wall ovens sit in cabinetry, and their parts are model-specific. We confirm the exact model and serial number, quote the part in writing and protect the surrounding finishes while we work. The same care goes into any built-in refrigerator repair, whatever the badge.