High
FAULT POINT D on Worcester Bosch 24i/28i Junior

Your boiler has stopped working completely and has entered a safety 'lockout' mode, meaning it needs a manual reset or a professional assessment to restart safely.

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

Lockout light on constantly (on or off if burner light is off)

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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Related fault codes

FAULT POINT CView →FAULT POINT EView →

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