BoilerFaultCodesYour boiler has detected an internal electronic communication error or a temporary sensor discrepancy and has paused operation for safety.
This fault should be looked at by a Gas Safe engineer within the next week or two. It may get worse if left.
Technical description: Temporary fault code (Refer to section 7.10)
What causes this fault?
This fault occurs when the boiler's central control board stops receiving consistent data from its internal sensors or temporary electrical interference disrupts the system. It is often caused by a failing thermistor sending incorrect temperature readings or a maturing circuit board that can no longer process signals reliably. The boiler pauses briefly to prevent overheating or damage until it can verify that all components are communicating correctly.
DIY fix possible
Turn the mode selector knob to the 'OFF/RESET' position.Wait for 30 seconds.Turn the knob back to the 'ON' or 'Winter' position to see if the error clears.
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