Low
COdE on Atag Q 25S

Your boiler is currently locked because it is requesting a technician's security code to access the internal settings menu.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Monitor it

This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.

Technical description

Requirement to enter the access code

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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