BoilerFaultCodesVokera E41 Fault Code
The Vokera E41 fault code means: your boiler's internal computer parts are having trouble talking to each other, causing the system to stop working.. It appears on 1 Vokera model in our database.
Technical description: Communication error
What causes the Vokera E41 fault?
This fault occurs when the boiler's main control board loses its digital connection with another internal component, such as the display screen or a sensor module. The most common reason is a loose or damaged wiring connection between these parts, or a physical failure inside the main electronic circuit board itself.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
Gas Safe Register →Vokera models that show the E41 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Vokera E41 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