BoilerFaultCodesVokera 26 Fault Code
The Vokera 26 fault code means: your boiler is experiencing a temporary communication error or internal glitch that usually resolves itself, but may require a simple reset if the heating doesn't resume.. It appears on 3 Vokera models in our database.
Technical description: Temporary fault code (Refer to section 7.10)
What causes the Vokera 26 fault?
On the Vokera Linea HE, fault 26 occurs when the internal control system experiences a brief communication delay or a software glitch. It is essentially a 'handshake' error within the electronic boards that causes the boiler to pause operations momentarily while it tries to recalibrate. If the system cannot clear this error on its own, it will stop the boiler from firing to protect the electronics.
DIY fix possible
Check if the boiler clears the code automatically after a few minutesPress the reset button once to clear the temporary faultMonitor the boiler for recurring instances of this code
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
Gas Safe Register →Vokera models that show the 26 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Vokera 26 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