High
Lockout on Chaffoteaux Talia Green 25

Your boiler has stopped working because it cannot light its internal flame or keep it burning, which has triggered a safety shut-down.

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.

What the manual says

Manufacturer manual

Flame extinguishes: When the ionisation probe fails to detect flame presence. If a flame is not detected within 10 seconds, the safety solenoids will close. The red lockout indicator 35 illuminates and the display shows the error code.

From this model's manual
Verified against the Chaffoteaux Talia Green 25 installation & service manual.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

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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