Viking Designer Cooktop Code FJ: Key Error on the Touch Control

What FJ means

On Viking Designer DETU series touch-control radiant cooktops, FJ is another key error. All heating elements are shut off, and the timer display holds the code. A touch key may be stuck or reporting wrongly. FJ shares the key error meaning with FA, FC and FU, but the letter points us to a specific key circuit, so tell us exactly what you see.

Common causes of FJ

Touch key reading as pressed
Moisture or residue on the touch panel
Key line to the control reading wrongly

✓ One safe check you can try

1. Turn the cooktop off and let the glass cool. 2. Dry the touch area and remove anything resting on it. 3. Flip the breaker off for a short minute and on again. 4. Try the on key. 5. If FJ returns, call us.

! Why to stop there

The key circuits are under the glass
Only testing shows which key is reporting wrongly
Repeated resets do not fix a worn key

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

FCViking Designer Cooktop Code FC: Key Error With a Capital C FcViking Designer Cooktop Code Fc: Over Temperature With a Small c FdViking Designer Cooktop Code Fd: LED On/Off Test Error 5 flashes (with brief interval)Viking Induction Cooktop Code 5 flashes (with brief interval): Power Device Temperature Sensor FEViking Designer Cooktop Code FE: Temperature Sensor Has Failed 6Viking Induction Cooktop Code 6: filter board error FHViking Designer Cooktop Code FH: EEPROM Control Error on the Board 6 flashes (with brief interval)Viking Rangetop and Cooktop Code 6 flashes (with brief interval): Coil Temperature Sensor Trouble

FJFJ questions

Why so many key error codes?

Each letter points to a different key circuit. That helps us find which part of the touch panel is reporting wrongly. The letter after F tells us which key circuit reported the problem.

Could a spill have caused FJ?

Yes. Liquid or grease on the panel can make a key read as pressed. Dry the panel carefully and try again after a power reset.

How quickly can you come?

Tell us the code when you call. We schedule quickly, quote the price in writing and back the repair with a 30-day workmanship warranty. Our technicians usually find which key circuit is at issue within a single visit.