BoilerFaultCodesYour boiler has stopped working because the electrical power coming from your mains supply has dropped too low for it to run safely.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Power supply <170V
What causes this fault?
This fault occurs when the electrical voltage entering your boiler drops to a level that is too low for the internal components to operate safely. It is usually caused by an external problem with the national grid supply or a faulty Printed Circuit Board that can no longer accurately monitor the incoming power.
This issue can be more frequent during periods of extreme weather or high national energy demand, which can lead to temporary drops in local grid voltage.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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