Wolf Oven Error Code OVER TEMP

The OVER TEMP error on a Wolf oven is a thermal runaway fault that activates when the oven cavity reaches a critically unsafe temperature. For ovens with an unlocked door, the threshold is 630°F. For ovens in self-clean mode with the door locked, the threshold rises to 930°F. These limits exist as a safety cutoff to prevent damage to internal wiring, insulation, and components, as well as to reduce fire risk. When either threshold is crossed, the control system halts operation and displays this fault.

The two primary components involved in this fault are the RTD (resistance temperature detector) sensor and the relay board. The RTD sensor monitors cavity temperature by changes in electrical resistance. If the RTD sensor develops a fault, such as a short or drift in its resistance characteristics, it may report inaccurate temperature data, causing the control to either misread actual oven temperature or fail to regulate the heating elements correctly. A faulty relay board can also cause a runaway condition by allowing the bake or broil relays to stay closed continuously, keeping heating elements energized beyond the intended setpoint.

Diagnosis begins with ohming out the RTD sensor to verify it is reading within its correct resistance range at a known temperature. If the sensor checks out as good, the relay board is the next suspect, as a stuck relay on that board would allow uncontrolled heat input into the oven cavity. Both scenarios result in the oven exceeding safe operating temperature limits and triggering this protective fault code.