Wolf Oven Error Code Oven Light relay open

The "Oven Light relay open" error indicates that the oven light relay on the relay module has become stuck in the open position. In a Wolf oven, the relay module houses multiple relays that control various oven functions, including the interior cavity light. When a relay is stuck open, it cannot complete the circuit it controls, meaning the electrical path through that relay remains broken regardless of the control signal sent to it. The oven's control board detects this fault condition because the expected circuit behavior does not match the commanded state.

The relay module is a critical component that receives low-voltage switching signals from the main control board and uses those signals to switch higher-voltage circuits on and off. A relay stuck in the open position is typically caused by a failed relay coil, burned or corroded relay contacts, or a manufacturing defect that develops over time with repeated thermal cycling. Because the relay module handles multiple circuits, a fault in one relay does not necessarily affect other oven functions, though the interior light will not operate while this fault is present.

Diagnosis begins with inspecting all wiring connections to the relay module for looseness, corrosion, or heat damage. Loose or corroded connectors can mimic a relay fault by introducing high resistance into the control signal or load circuit. If connections are secure and in good condition, the relay module itself is the primary suspect and replacement is the recommended corrective action.