BoilerFaultCodesYour boiler's internal computer has encountered a digital error and is unable to communicate with the system components.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Software Error
What causes this fault?
This fault occurs when the boiler's main control board experiences a data processing failure or a corrupted software signal. It often happens due to an electrical surge, age-related degradation of the circuit board components, or loose wiring connections that prevent the processor from talking to the rest of the unit.
DIY fix possible
Locate the reset button on the control panel.Press and hold the reset button for several seconds.Wait to see if the boiler restarts and the flashing light stops.
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
Gas Safe Register →Protect yourself from future repair bills
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