BoilerFaultCodesViessmann E10 Fault Code
The Viessmann E10 fault code means: your boiler's internal computer has encountered a software or setting error and can no longer communicate correctly with the system.. It appears on 1 Viessmann model in our database.
Technical description: Control unit fault. Parameter error.
What causes the Viessmann E10 fault?
This fault occurs when the boiler's internal memory experiences a corruption or a mismatch in its configuration settings. The most common reason is a physical failure of the main control board or the small electronic 'coding card' that tells the boiler which specific model it is.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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Gas Safe Register →Viessmann models that show the E10 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Viessmann E10 fault code information on this page is sourced and cross-checked against the official Viessmann service / installation manuals for each affected model.
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026