BoilerFaultCodesYour boiler has stopped working because the water level inside the system has dropped too low to operate safely.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Should the pressure fall below 0.5 BAR, the boiler shuts off automatically.
What causes this fault?
This fault occurs when the sealed water circuit loses its required pressure, usually due to a small leak in the pipework or at a radiator valve. It can also happen if the expansion vessel has lost its internal air charge, causing water to be forced out of the safety discharge pipe.
This issue often surfaces when you turn your heating back on for autumn, as the sudden change in temperature and pressure can highlight minor leaks that weren't visible in the summer.
DIY fix possible
Locate the filling loop, which is usually a flexible silver hose with one or two small valves underneath the boiler.Slowly open the valve(s) to allow cold water into the system, watching the pressure gauge rise.Close the valves tightly once the pressure gauge reaches between 1.0 and 1.5 BAR.
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 PressureGauge < 0.5 BAR — no call-out fees, no surprises.
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Vokera Mynute 10E 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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