BoilerFaultCodesVokera 70 Fault Code
The Vokera 70 fault code means: your boiler has detected a temporary technical issue that frequently relates to an internal communication error or a sensor detecting an unusual reading.. It appears on 3 Vokera models in our database.
Technical description: Temporary fault code (Refer to section 7.10)
What causes the Vokera 70 fault?
This fault occurs when the boiler's internal computer experiences a momentary communication glitch or receives an inconsistent reading from one of the temperature sensors. It acts like a temporary digital 'hiccup' where the main control board becomes briefly confused by the data it is receiving. If the issue persists, it usually points to a failing electronic control board or a sensor that is starting to wear out.
DIY fix possible
Locate the mode selector switch on the front panelTurn the switch to the 'OFF/RESET' positionWait for 30 secondsMove the switch back to the 'ON' (winter or summer) position
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Gas Safe Register →Vokera models that show the 70 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Vokera 70 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