BoilerFaultCodesYour boiler has detected that there is not enough water circulating through the system or the pump has stopped moving the water around.
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 in the boiler or the pump is not working
What causes this fault?
This fault occurs when the internal sensors detect that water isn't moving through the heat exchanger as it should, leading to a risk of overheating. The most common reasons are a pump that has seized or failed, a loss of system pressure, or a physical blockage like an air lock preventing flow.
This issue is more frequent in autumn when the heating is turned on for the first time after summer, as the pump can seize or stick during months of inactivity.
DIY fix possible
Check the pressure gauge on your system and top it up to 1.5 bar if it is too lowEnsure all radiator valves and isolation valves under the boiler are fully openGently bleed your radiators to remove any trapped air pocketsReset the boiler by pressing the 'Reset' button for two seconds
Find a Gas Safe engineer
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A boiler cover plan would cover faults like é7 — no call-out fees, no surprises.
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Remeha Avanta 18V 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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