BoilerFaultCodesVokera 83 Fault Code
The Vokera 83 fault code means: your boiler is experiencing a communication error between its internal parts, which it is currently trying to resolve automatically.. It appears on 3 Vokera models in our database.
Technical description: Temporary fault code (Refer to section 7.10)
What causes the Vokera 83 fault?
This fault occurs when the boiler's internal components struggle to send electrical signals to each other reliably. It is often caused by atmospheric moisture affecting the circuit board or loose connections within the internal wiring loom that disrupt the flow of data. While the boiler attempts to fix this itself, it usually indicates that the electronic 'brain' is starting to fail or has a poor connection.
This issue can be more frequent in autumn and winter when increased humidity or dampness in the air can interfere with sensitive electrical connections and circuit boards.
DIY fix possible
Wait up to 15 minutes for the boiler to self-correctTurn the selector switch to the 'Reset' position, wait for two seconds, and turn it back to the 'On' positionCheck if the boiler pressure is between 1 and 1.5 bar on the gauge
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Gas Safe Register →Vokera models that show the 83 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Vokera 83 fault code information on this page is sourced and cross-checked against the official Vokera service / installation manuals for each affected model.
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026