Viking Induction Cooktop Code 5: interface board to generator communication lost

What 5 means

Code 5 on Viking Professional VICU206 and VICU266 induction cooktops, the hybrid VCCU106 and VCCU166, and the VISC530 induction range signals a communication error between the interface board and the induction generator. The two parts stopped talking, so the cooktop cannot pass your knob settings to the heating side. Expect the 5 on the display and zones that will not heat.

Common causes of 5

Loose or defective cable between the boards
Interface board not communicating
Filter board problem

✓ One safe check you can try

1. Turn the cooktop off at its breaker, wait one minute, and restore power. 2. Try a zone with a magnetic pan. 3. If code 5 reappears right away, stop there. A cable or board link is the likely cause and it sits under the glass top, so please do not lift the cooktop or reach underneath. Call us with your model number.

! Why to stop there

The links between boards are inside the cooktop and cannot be checked from above
Replacing the wrong board first is an easy way to spend money without a result
We quote first in writing and stand behind the work for 30 days

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

FbViking Designer Cooktop Code Fb: Keyboard Error With a Small b 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

55 questions

Is a loose cable really possible?

Yes. The communication link between the boards runs through a cable that can work loose or fail inside the cooktop, and we check that cable first, before any board is replaced.

Why does code 5 sometimes disappear after a reset?

A reset restarts both boards, which can re-establish the link for a while. If the connection is marginal, the 5 returns and the cause still needs to be found.

Do I need to stop using all zones?

Since the communication problem sits between the control and the heating side, we advise leaving the cooktop off until it is checked rather than testing zone after zone.