Wolf Cooktop Code F6: open generator sensor or RTD2 short circuit

What F6 means

F6 is used on two Wolf platforms. On early induction cooktops like the CT30I/S and CT36I/S, it means the transistor check on the generator found an open temperature sensor. On legacy integrated modules, the IF15/S fryer and IS15/S steamer, it means RTD2 reports a short circuit. You will see F6 and the unit will not heat normally. Heating may stop or behave unevenly.

Common causes of F6

Early induction: open temperature sensor in the generator circuit
IF15 and IS15 modules: shorted RTD2 temperature probe
Loose connector or control board misreading the probe

✓ One safe check you can try

1. Turn the unit off and let it cool. 2. Turn its breaker off for a full minute, then back on. 3. On an IF15 or IS15, make sure the module is dry and nothing is wedged around the probe. 4. If the F6 code returns, stop using the cooktop and arrange a technician. Do not open the unit.

! Why to stop there

The two platforms share the code but not the cause, so the first job is identifying which one you have.
Probe circuits are tested with a meter, not by eye.
You receive a written price up front.
Our job carries a 30-day workmanship warranty, valid from the day we finish.

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 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 E13Wolf Induction Cooktop Code E13: OFF key error, dry the controls first E6Wolf CT Cooktop Code E6: shorted ambient thermistor E19Wolf CT Induction Code E19: read line failure E2Wolf CT Cooktop Code E2: generator 1 heat sink above 194F E20Wolf CT Cooktop Code E20: Shorted Generator Burner Sensor

F6F6 questions

What is RTD2?

It is a temperature probe in the IF15 fryer and IS15 steamer modules. F6 there says the probe reads shorted, so the module cannot control heat.

Which meaning is mine?

CT30I/S and CT36I/S induction cooktops use the open-sensor meaning, while IF15/S and IS15/S modules use the shorted RTD2 probe meaning. Your model label on the data plate settles it.

Is it safe to use a fryer module showing F6?

We advise against it. The control cannot read the oil temperature, so it cannot hold it safely. Switch it off and call us for a visit.