BoilerFaultCodesYour boiler's automatic filling system has topped up the water pressure too many times in a short period, suggesting there may be a leak in your heating system.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Maximum number of refills reached
What causes this fault?
This fault occurs when the boiler's Intelligent Filling System detects that it is adding water too frequently to maintain pressure. It suggests that water is escaping from your central heating system, usually through a pipe leak or a faulty component like the expansion vessel. To prevent potential flooding or damage, the boiler stops refilling automatically and shuts down.
This fault often appears in autumn when the heating is first turned on after summer, as the change in temperature and pressure can expose small leaks or weakened seals.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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