BoilerFaultCodesYour boiler has detected that water is not circulating properly through the system before the burner starts up.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Pre-circulation Fault
What causes this fault?
This fault occurs when the boiler's internal sensors detect that water isn't moving through the unit quickly enough before it attempts to ignite. The most common reason is a failing circulation pump or a blockage in the heat exchanger that prevents the flow of water. It can also be triggered by trapped air or a buildup of sludge within the system pipework.
This issue often surfaces when the heating is turned back on after the summer, as pump components can seize during long periods of inactivity.
DIY fix possible
Check that your system pressure is between 1 and 1.5 bar on the pressure gaugeEnsure all radiator valves and isolation valves under the boiler are fully openTry bleeding your radiators to remove any trapped air pockets
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 E193 — no call-out fees, no surprises.
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Potterton Gold 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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