BoilerFaultCodes.com
08 High

Your boiler has stopped working because the water pressure inside the system is too low to operate safely.

Call an engineer soon

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 primary circuit
Typical repair cost £80-150 (including labour)

DIY fix possible

Locate the filling loop (usually a flexible silver hose) underneath the boiler.Open the valves to allow mains cold water into the system until the pressure gauge reads between 1.0 and 1.5 bar.Close both valves tightly to stop the inflow of water.

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