BoilerFaultCodesVokera E 13 Fault Code
Also written as E13 — same fault.
The Vokera E 13 fault code means: your boiler's main control unit has identified a critical internal software or hardware error and must shut down to prevent further damage.. It appears on 1 Vokera model in our database.
Technical description: Internal fault (PCB)
What causes the Vokera E 13 fault?
This fault occurs when the boiler's internal computer experiences a critical communication breakdown or a physical component failure on the circuitry. It is often caused by an electrical surge, moisture getting onto the board, or simply the natural degradation of the solder joints and microchips over time.
This fault is slightly more common during the winter months, as the increased workload on the boiler can push an aging or stressed circuit board to the point of total failure.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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Gas Safe Register →Vokera models that show the E 13 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Vokera E 13 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