Your boiler has detected a general issue that needs checking to prevent a full breakdown.
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: General warning signal
What causes this fault?
This fault occurs when the boiler's internal computer detects an inconsistency in the electrical signals required to keep the system running safely. The most common reason is that the components responsible for lighting the flame or monitoring its presence are beginning to wear out or are sending weak feedback to the main control board.
DIY fix possible
Check that your home's gas supply is activeEnsure the system water pressure is between 1.0 and 2.0 barRestart the boiler by holding the reset button for two seconds
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
A boiler cover plan would cover faults like 1-2-3 — no call-out fees, no surprises.
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Remeha Gas 350 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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