Wolf CT Cooktop Code E20: Shorted Generator Burner Sensor

What E20 means

Wolf CT induction cooktops of the earlier CTI generation, such as CT30 and CT36 sizes, use E20 and E21 for a generator burner sensor that reads shorted. The affected burner shuts down. The official correction is to change the generator board. You will see E20 in the display and one burner will not heat. E22 and E23 describe the same sensor reading open instead.

Common causes of E20

Burner sensor circuit reading shorted
Generator board sensing input failing
Burner sensor wiring damaged

✓ One safe check you can try

1. Turn off all burners and let the cooktop cool. 2. Switch the breaker off for one minute, then back on. 3. Check whether the same burner shuts down with E20 again. 4. Do not try other burners hard in the meantime. 5. Call us so we can confirm the sensor and board.

! Why to stop there

The listed correction is a generator board, which is an expensive part that should be confirmed first.
Sensor and board checks need meter work inside the cooktop.
We give you a written price before ordering parts and a 30-day workmanship warranty after.

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.

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Other Cooktop codes

E7Wolf Induction Cooktop Code E7: Keyboard Diode Configuration Error E8Wolf CT Induction Code E8: no communication with generator 1 E9Wolf CT Cooktop Code E9: Generator 2 Communication Error E33Wolf CT Cooktop Code E33: LED Board Failure on a Burner E4Wolf CT Induction E4 Code: Heat Sink of Generator 3 Overheated 39Wolf 2015-Series Cooktop Code 39 Flags a Controller Options Error E40Wolf Induction Cooktop Code E40: Generator Burner Sensor Shorted 47Code 47 on Wolf CI, CE and Module Cooktops: LIN Communication Error

E20E20 questions

What does a shorted burner sensor mean?

The sensor circuit for one burner reads as shorted, so the control shuts that burner off for safety. E20 and E21 share this meaning. You are welcome to ask us questions at any point during the visit.

Which board is replaced for E20?

The listed correction is the generator board. We confirm with tests before quoting so you only pay for a part that is needed. Tell us what you were doing when it appeared, because that detail helps a great deal.

How is E20 different from E22?

E20 is the sensor reading shorted; E22 is the sensor reading open. Same sensor, opposite condition. Photos of the display are useful when you book the appointment.