Viking VICU Cooktop Code 3 flashes (with brief interval): The Power Device Malfunctions

What 3 flashes (with brief interval) means

On Viking induction and radiant cooktops with an LED flash code, such as the VICU105-4B and VICU165-6B, three flashes with a brief interval mean an internal power device malfunction. The same table applies to the VIRT301 and VCRT301 rangetops. This is an electronics problem inside the unit, not a pan or a setting, and the cooktop may refuse to heat at all.

Common causes of 3 flashes (with brief interval)

Power device inside the cooktop malfunctioning
Power surge that damaged the electronics
Wiring or connection to the power device

✓ One safe check you can try

1. Turn all zones off. 2. Switch the breaker off for one minute, then back on. 3. Try one zone at a medium setting with a flat induction-ready pan. 4. If the three flashes come back, leave the cooktop off. 5. Call us for a proper check.

! Why to stop there

The power device cannot be tested without removing the cooktop
A wrong guess means an expensive wrong part
Repeated power-ups are not good for damaged electronics

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

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

3 flashes (with brief interval)3 flashes (with brief interval) questions

Does a reset fix three flashes?

Sometimes a power glitch clears. If the three flashes come back, the power device itself is the issue and needs a technician. It is an electronics matter, not something a cleaner can touch.

Could a pan be causing it?

Not for this pattern. Cookware problems have their own flash code. Three flashes points inside the unit, which is a different problem from the one-flash overheating pattern.

What will a repair cost?

We quote the price in writing before any work. Replacing a power device is a larger repair, and it comes with our 30-day workmanship warranty.