Viking Cooktop Error Code 4

Error code 4 on a Viking induction cooktop signals a configuration mismatch between the interface board and the induction generator. Specifically, the interface board has transmitted incorrect or false setup data to the filter board, causing the system to detect an incompatibility in how the components are configured to communicate with one another. This is a communication-level fault rather than a simple sensor or heating failure, meaning the cooktop cannot operate safely until the configuration is resolved.

The interface board acts as the control hub, relaying operating parameters and configuration data to the filter board, which in turn manages power delivery to the induction generator. When the interface board sends incorrect configuration data, the filter board cannot properly initialize or regulate the induction system. This mismatch can stem from a version incompatibility between the interface board firmware and what the filter board expects, or from an actual component failure on either the interface board or the filter board itself.

Diagnosing this fault begins with checking the version of the interface board to confirm it is compatible with the rest of the system. If the error persists continuously regardless of power cycling, the filter board is the primary suspect for replacement. In some cases, the interface board itself may have a hardware fault that prevents it from transmitting correct configuration data, requiring evaluation of both boards before the root cause can be confirmed.