Wolf M Series Wall Oven Code 4631: Upper left convection fan not detected

What 4631 means

On Wolf M Series wall ovens, including the SO3050TM/S/T, code 4631 means the control does not detect the upper left convection fan. It calls for the fan to run and sees no sign that the motor is responding. The display shows 4631, and convection modes may stop, run without airflow, or give uneven results. Regular Bake and Broil often keep working while convection is out.

Common causes of 4631

Failed upper left convection fan motor
Loose motor connector or wiring
Relay board output that drives the fan
Blade or shaft jammed so the motor cannot turn

✓ One safe check you can try

1. Put the oven in Off and let it cool before you try anything. 2. Briefly remove power at the breaker, roughly two minutes, and restore it. 3. Start Convection Bake with the door closed and listen for the fan; a steady hum of moving air is normal. 4. If 4631 returns or the fan is silent, stop using convection modes and call us.

! Why to stop there

Fan motors run in a hot area behind the cavity wall, so access is limited and not safe for owners.
We test the motor and its wiring separately to avoid replacing a good part.
We hand you the figure in writing before work starts and warrant the repair for 30 days.

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

0121Wolf M Series Oven Code 0121: upper right convection relay shorted 0221Wolf M Series Code 0221: Upper Bake Element DLB Shorted 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 2631Wolf M Series Code 2631: Relay board door switch circuit 3D20Wolf M Series Code 3D20: Input voltage frequency error 2720Wolf M Series Code 2720: Element or door lock watchdog failure

46314631 questions

Can I still bake without the upper left convection fan?

Standard Bake and Broil may still work because they do not need the fan. Convection modes depend on airflow, so we recommend skipping them until the fan has been tested.

What do I hear when this fan fails?

Some owners hear a grinding or scraping noise before the code; others hear nothing at all. Tell us what you noticed, as it helps us decide whether the motor or a blade is the problem.

Do both fans get replaced together?

Not unless both are bad. Each fan is checked on its own. We replace only the part that tests bad and quote it in writing before starting.