BoilerFaultCodesYour boiler is heating up too quickly because water isn't moving through the system properly, causing it to shut down to prevent overheating.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: No water flow (rate of rise too high)
What causes this fault?
This fault occurs when the heat exchanger gets too hot too quickly because water isn't circulating through the boiler at the required speed. The most common reasons are a failed internal pump, a physical blockage in the pipework, or air trapped within the system preventing the flow of water.
This issue often appears when the heating is first turned on after summer, as internal pump components can seize up during long periods of inactivity.
DIY fix possible
Check that all radiator valves and isolation valves are fully open.Ensure your system pressure is topped up to between 1.0 and 1.5 bar.Gently bleed your radiators to remove any trapped air pockets.
Find a Gas Safe engineer
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A boiler cover plan would cover faults like E18 — no call-out fees, no surprises.
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Remeha Quinta 115 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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