Wolf Touchscreen CI Cooktop Code E47: master reports a power supply error

What E47 means

On the 2023-and-newer Wolf touchscreen CI induction cooktops, such as the CI30460T/S and CI36560C/B, E47 means the master board reports a power supply error. The internal supply that feeds the control electronics is not delivering what the master expects. The display shows E47 and the cooktop may stop responding or refuse to heat. Lights or screens on the cooktop may flicker.

Common causes of E47

Master board power supply output out of range
Incoming household voltage problem at the cooktop
Control electronics needing replacement

✓ One safe check you can try

1. Turn off all zones and let the glass cool. 2. Turn its circuit breaker off for one minute, then back on. 3. If other appliances on that circuit also misbehave, tell us, because the source may be the house wiring. 4. If the E47 code returns, stop and call us.

! Why to stop there

A supply error might come from the cooktop or from the house circuit, and telling them apart takes a meter and training.
Live induction circuits are not safe for do-it-yourself testing.
Price is given in writing first.
Our job includes a 30-day workmanship warranty.

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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E47E47 questions

Could my home's wiring cause E47?

It can. Low or unstable voltage at the cooktop can trigger it, so we measure the supply at the cooktop during the visit, before blaming the control, to learn where the problem starts.

Why does the screen sometimes go blank with E47?

The display runs from the same supply that E47 reports on. Without a steady supply the control electronics cannot stay awake, so the screen may freeze or turn off.

Is it covered by a reset?

A reset is worth one try. If the board is truly failing to supply power, E47 will return and the board needs a technician. Tell us if other appliances on that circuit act up.