BoilerFaultCodesYour boiler has lost water pressure and has shut itself down to prevent damage.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: 0 bar
What causes this fault?
This fault occurs when the water pressure inside your heating system drops below a safe level, causing the boiler to turn off for safety. The most common reason is a slow leak somewhere in your radiators or pipework, but it can also happen if you have recently bled your radiators and haven't topped the system back up.
This fault is frequent in autumn when homeowners turn their heating back on for the first time after summer, revealing pressure losses that occurred while the system was idle.
DIY fix possible
Locate the silver braided filling loop underneath the boiler.Slowly open both small lever valves until you hear water entering the system.Watch the pressure gauge and close both valves firmly when the needle reaches 1.5 bar.
Find a Gas Safe engineer
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Gas Safe Register →Protect yourself from future repair bills
A boiler cover plan would cover faults like 4 — no call-out fees, no surprises.
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Potterton Performa 24 Eco HE 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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