Microwave Diagnostics

Wolf Microwave
Error Codes

Meanings, severity levels, safe checks you can perform, and when to call a technician.

Enter the code shown on your microwave display

Is it safe to keep using it?

Depends on code severity. Low/Medium codes often allow continued use, High severity requires immediate stop.

Can error codes be reset?

Some codes clear after power cycle. Persistent codes indicate underlying issues needing repair.

When should I stop using it?

Stop immediately for water leak codes, burning smell, or any High severity error.

Most Common Codes

NO-HEAT NO-POWER STOP-16S DOOR-STUCK 20A-FUSE CTRL-LOCK

All Codes

20A-FUSE CTRL-LOCK DOOR-STUCK NO-HEAT NO-POWER STOP-16S

Error Code Directory

Click any code for detailed troubleshooting steps

Low Medium High

Code Meaning Severity Common Symptom

20A-FUSE 20A Fuse Blown High The microwave was working normally, a cook cycle was attempted, and the microwave immediately went dead — typically with a small pop or hum. View CTRL-LOCK Touch Controls Stuck Low The microwave is visually alive — clock is running, indicators are lit — but no button press produces any response or beep. View DOOR-STUCK Drawer Stuck Medium The button produces a beep or acknowledgement but the drawer does not move, or it attempts to move and stalls partway. View NO-HEAT Running, No Heat Medium After running a normal time setting, food comes out unchanged in temperature — the cycle appeared complete but no cooking happened. View NO-POWER Will Not Turn On Low The clock, mode indicators, and any status lights are all off — the control board has no power to drive the display. View STOP-16S Stops At 16 Seconds Medium Any cook cycle — regardless of power level or duration set — cancels at the 16-second mark and displays ERROR. View