High Lockout
1! on Remeha Quinta 115

Your boiler's internal computer parts are struggling to talk to each other, causing the system to stop working entirely.

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

Failure of internal communication bus

What causes this fault?

This fault occurs when the electronic components inside the boiler lose the ability to send signals to one another, effectively cutting off the unit's 'nervous system'. The most common reason is a physical failure of the main printed circuit board or a loose connection in the internal wiring caused by years of heat expansion and vibration.

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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