Viking Designer Cooktop Code FH: EEPROM Control Error on the Board

What FH means

On Viking Designer DETU series touch-control radiant cooktops, FH is a control error involving the EEPROM, the memory chip that stores the control's settings. The control stops all heating elements and shows the code on the timer display. The fix is usually inside the control, so cooking stops until a technician checks it. You will see the code on the timer display each time you turn the cooktop on.

Common causes of FH

EEPROM memory on the control board corrupted
Control board failure
Power surge disturbing the memory

✓ One safe check you can try

1. Turn all controls off. 2. Let the glass cool. 3. Switch the breaker off for a full minute, then restore power. 4. Touch the on key and see if the display clears. 5. If FH returns, call us and keep the cooktop off.

! Why to stop there

Memory problems are inside the control
A reset only helps if the glitch was brief
Boards cannot be repaired by cleaning

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

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FHFH questions

What is the EEPROM?

It is a small memory chip on the control board that holds settings. If it reads wrongly, the control cannot trust its own instructions and stops the heat.

Could a power surge cause FH?

It can disturb the memory. A power reset may clear a one-time disturbance, but a returning FH usually means the board must be replaced. We confirm it with a test.

What does the repair involve?

We confirm the code, replace the control if needed, and test every zone. The price is written first, with a 30-day workmanship warranty. We also test the other zones afterward, so you leave with a cooktop that works on every burner.