BoilerFaultCodesWhat the manual says
Manufacturer manualVoltage less than 180V
Shared across the range
This code is shared by the boilers in this range, which use the same control board. It may not be printed in this exact variant’s manual.
What causes this fault?
This fault occurs when the electrical supply entering the boiler drops to a level where the electronic components can no longer function safely. It is usually caused by a wider problem with the local power grid or a failing main circuit board that can no longer process the incoming voltage correctly. In some cases, loose wiring or a faulty external socket can also cause this dip in electrical pressure.
Engineer required
This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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