Wolf Oven Error Code Left Convect Fan triac open

This error means the triac, a semiconductor switch on the relay module, that controls power to the left convection fan is stuck in an open (non-conducting) state. As a result, the left convection fan cannot receive power and will not operate. The oven detects this fault when it commands the fan to run but the circuit does not complete. The relay module will typically need to be replaced to resolve the issue.

With this fault active, the left convection fan will not operate, which means convection cooking modes will not function correctly and heat distribution will be uneven. Bake or broil modes that do not rely on the left convection fan may still operate, but continued use without addressing the fault is not recommended. Have the oven inspected before relying on it for normal cooking.

Resetting the oven by cycling power may temporarily clear the error code from the display, but it will not resolve the underlying hardware fault. If the triac on the relay module has failed or a wiring connection is faulty, the error will return once the oven attempts to run the left convection fan again. A proper repair addressing the relay module or wiring is required for a lasting fix.

The first step you can take is checking that all wiring connectors at the relay module are fully seated and free of corrosion, as a loose connection can cause this fault. Beyond that, resolving the error requires replacing the relay module, which involves working with line-voltage wiring inside the oven. This work is best handled by a qualified appliance technician.

Repair costs will depend on whether the issue is a loose connection or a failed relay module. If only a wiring connection needs to be reseated, the cost may be limited to a service call fee, typically in the range of $75 to $150. If the relay module requires replacement, parts and labor combined can range from $200 to $500 or more depending on your location and the specific model.