Your boiler has stopped because the water pressure inside the heating 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: The PCB checks the pressure of the primary circuit, if the pressure measured is 0.8 bar or lower, the boiler will lockout after 40 seconds. The pump will stop.
DIY fix possible
Locate the filling loop (a silver flexi-hose with one or two valves) under your boiler.Open the valve(s) slowly to allow water into the system while watching the pressure gauge on the front of the boiler.Close the valve(s) tightly once the needle reaches 1.5 bar.Reset the boiler using the reset button.
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Gas Safe Register →Protect yourself from future repair bills
A boiler cover plan would cover faults like E 02 — no call-out fees, no surprises.
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Chaffoteaux Minima 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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