BoilerFaultCodesYour boiler's internal computer has encountered a communication error or software glitch that is preventing it from running safely.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Internal error.
What causes this fault?
This fault occurs when the boiler's main control centre suffers a sudden communication breakdown between its internal electronic components. It is typically caused by a component failure on the circuit board or a loose connection in the wiring harness that prevents the computer from verifying its own safety checks. Because the 'brain' of the boiler can no longer guarantee safe operation, it shuts the system down immediately.
DIY fix possible
Press and hold the reset button for five secondsWait for the boiler to complete its restart sequenceIf the code persists, turn the main power switch to the boiler off and back on again
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A boiler cover plan would cover faults like F0 — no call-out fees, no surprises.
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Worcester Bosch Greenstar 30HE is discontinued — time for a new one?
Parts for discontinued models can be hard to find and expensive. A new A-rated boiler could save you money on both repairs and energy bills.
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