Wolf Oven Error Code 0322

Error code 0322 on a Wolf oven indicates that the broil element drive circuit on the lower oven relay board has detected a shorted condition. The relay board is responsible for switching power to the broil element on command from the oven control board. When the relay or the associated drive circuitry on this board develops an internal short, the control detects an out-of-range signal and triggers this fault code. This is a board-level fault, meaning the short is occurring within the relay board itself rather than in the broil element or the wiring harness connecting the element to the board.

The relay board contains dedicated output relays for each heating element in the oven cavity. A shorted broil element drive condition typically means the relay controlling the broil element has welded its contacts closed, or the driver circuit on the board that activates the relay has failed and is sending a continuous drive signal. Either condition can result in the broil element remaining energized or behaving unpredictably, which the control interprets as a fault. The lower oven relay board is a separate component from the main control board, and this fault is isolated specifically to that board.

Because the fault is diagnosed as a board-level short in the drive circuitry, the recommended first diagnostic step is direct replacement of the lower oven relay board. Before replacing the board, a technician should visually inspect the board for burn marks, swollen components, or signs of heat damage, and verify that the wiring harness connectors are fully seated. If the error persists after board replacement, further investigation into the main control board or element wiring may be warranted.