High Lockout
8-9 on Remeha Gas 350

Your boiler has lost its electrical power supply and cannot turn on or heat your home.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

Technical description

No power supply

What causes this fault?

This fault occurs when the boiler's internal computer system is no longer receiving the electricity it needs to operate. The most common reason is a blown fuse on the main circuit board or a failure of the external power switch supplying the unit. In some cases, an internal electrical short or a faulty control board is preventing the power from flowng through the system.

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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