Wolf M Series Code 0931: Upper right convection fan triac shorted

What 0931 means

Wolf M Series wall ovens show 0931 when the triac that switches the upper oven's right convection fan is read as shorted, meaning the fan circuit conducts when it should not. The lower oven's counterpart is 0932, and some displays number it 0920 or 0C20. You may hear the right fan running at the wrong time, with the code on screen. A fan that runs at the wrong time, or never starts, is usually how owners notice it.

Common causes of 0931

The upper right convection fan triac is shorted on the board
Wiring or a connector on the right fan circuit
The right convection fan motor drawing abnormal current

✓ One safe check you can try

1. Shut the oven off and give it time to cool down. 2. Switch the oven breaker off for one minute, then restore power. 3. Listen for the fan once the oven is off. 4. If the code returns, stop using convection modes and call us. Do not open the back panel.

! Why to stop there

A fan motor and its switch can fail the same way, so a swap without testing may fix nothing.
On this code the cause may also be wiring or a connector on the right fan circuit, or the right convection fan motor drawing abnormal current, so we rule each out before we quote.

Opening a panel yourself does not automatically cancel a manufacturer warranty, but it can cause accidental damage, and some manufacturers set their own service conditions. Check your warranty terms, or ask us, before deciding.

→Same appliance

Other Wall Oven codes

0321Wolf M Series Oven Code 0321: Broil Relay Shorted on the Upper Element 0421Wolf M Series Code 0421: upper left convection relay shorted 0630Wolf M Series Oven Code 0630: Auxiliary DLB Shorted 0121Wolf M Series Oven Code 0121: upper right convection relay shorted 0221Wolf M Series Code 0221: Upper Bake Element DLB Shorted 1321Wolf M Series Code 1321: Upper broil element relay open 3031Wolf M Series Code 3031: Upper temperature probe shorted 1421Wolf M Series Code 1421: Upper left convection element relay open

09310931 questions

Is it okay if the right convection fan keeps running after the oven is off?

A fan that will not stop is exactly what a shorted triac does, and it is why 0931 appears. It is not an emergency, but the circuit should not be left that way for long. We confirm the right fan circuit and quote it first.

Is the oven safe to use with this fan code?

Standard bake without convection is usually fine for a short time, but we would not run it for long. Fans protect the controls from heat, so a wrong fan state is worth fixing soon, and we can schedule that.

How do you price a fan circuit repair?

We quote in writing before work, after testing the fan and its switching. If the board is the issue we show you why. The work carries a 30-day workmanship warranty.