ERROR CODE EXPLAINED
Wolf M Series Wall Oven
Wolf M Series Wall Oven 0421 Error Code
What it means
The upper-left convection-element relay is shorted.
Try this first
- Turn the home circuit breaker off for 10 seconds.
- Restore power.
- Retest the oven.
- If the error returns, contact Factory Certified Service.
Can I keep using it?🔴 Convection relay fault
Repair usually required?⚠ Service may be required
If the error keeps returning
If the condition returns after troubleshooting, qualified service may be required.
Official source
Troubleshooting information verified against manufacturer support documentation.
View manufacturer support page →Safety note:ApplianceSignal provides general troubleshooting information. Always follow the appliance manufacturer's safety instructions and disconnect power when required.