Wolf Oven Error Code 0122

Error code 0122 on a Wolf oven indicates that the right convection element drive circuit has detected a short condition on the lower oven relay board. The relay board contains the switching relays and associated drive circuitry responsible for energizing the convection heating elements. When the control system detects an abnormal low-resistance or shorted state in the drive path for the right convection element, it triggers this fault code and disables the affected circuit to prevent potential damage to the wiring, components, or the oven cavity.

The lower oven relay board is a dedicated power-handling board that receives signals from the main control board and switches line voltage to the heating elements through its onboard relays. A shorted drive condition typically means that one of the relay coil drivers, output transistors, or relay contacts on this board has failed in a closed or low-resistance state. This type of fault is internal to the relay board itself rather than in the external convection element wiring or the element itself, which is why relay board replacement is the primary diagnostic action.

Because the fault is identified as a shorted drive on the relay board, inspecting or replacing the convection element first is generally not productive unless the element or its wiring has caused secondary damage to the board. The relay board failure may occur due to age-related component degradation, overheating from sustained high-temperature operation, or electrical stress from power surges. Technicians should confirm wiring connections at the relay board are intact and show no signs of arcing or heat damage before installing a replacement board.