BoilerFaultCodesWorcester Bosch 6.E Fault Code
Also written as 6E — same fault.
The Worcester Bosch 6.E fault code means: your boiler is having trouble communicating with the internal clock or plug-in timer, preventing it from knowing when to turn on.. It appears on 1 Worcester Bosch model in our database.
Technical description: Programmer input
What causes the Worcester Bosch 6.E fault?
This fault happens when the boiler's main control board loses touch with the plug-in timer or external programmer responsible for scheduling your heating. It is usually caused by a loose connection in the internal wiring or a mechanical failure within the clock component itself, meaning the boiler doesn't receive the 'on' signal it expects. While the boiler's hardware might be fine, it stays idle because it can no longer see your heating schedule.
DIY fix possible
Check that the plug-in timer or programmer is firmly pushed into the boiler fasciaReset the boiler by holding the reset button for five secondsEnsure any external room thermostats have fresh batteries and are calling for heat
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Gas Safe Register →Worcester Bosch models that show the 6.E fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Worcester Bosch 6.E fault code information on this page is sourced and cross-checked against the official Worcester Bosch service / installation manuals for each affected model.
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026