Viking Induction Cooktop Code 4: interface board configuration mismatch

What 4 means

On Viking Professional VICU206 and VICU266 induction cooktops and the hybrid VCCU106 and VCCU166, code 4 reports incorrect setup data. The interface board and the induction generator disagree on configuration, because the interface board has set the filter board wrongly. The same table appears on the VISC530 induction range. You will see the 4 and the affected zones may not heat at all.

Common causes of 4

Interface board sending the wrong configuration to the filter board
Interface board version not matching the cooktop
Filter board needing replacement after the interface board

✓ One safe check you can try

1. Switch the breaker for the cooktop off for about a minute, then on. 2. Start a single zone with a flat magnetic pan and see whether the 4 comes back. 3. If it returns, stop using the cooktop. The setup data is stored on boards inside the unit, so the next step is a service call and not something to adjust yourself.

! Why to stop there

The cause is board setup data, which needs the cooktop opened and the board version checked
Swapping boards in the wrong order can cost you an extra part
Our price comes in writing before work, with a 30-day warranty on the repair

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

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 FJViking Designer Cooktop Code FJ: Key Error on the Touch Control 7Viking Induction Cooktop Code 7: voltage supply missing a leg FLViking Designer Cooktop Code FL: Keyboard Error From Ambient Light

44 questions

What do the interface board and generator do?

The interface board reads your knobs and sends instructions, and the induction generator makes the heat. Code 4 means they are not agreeing on how the cooktop is set up.

Can a power reset fix code 4?

Rarely for good. It may clear for a moment, but a true configuration mismatch comes back. Treat a returning 4 as a repair, not a reset job.

Why might two boards be replaced?

The interface board is checked first. If it is the one sending bad configuration, it is replaced, and the filter board is only changed afterward if it still reports a problem.