High
LD2, LD3 Flashing on Biasi Riva Compact HE M96a

Your boiler has detected an issue with the sensor that monitors the temperature of the exhaust fumes, meaning it has switched itself off to prevent overheating.

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

Faulty Flue temperature probe NTC

From this model's manual
Verified against the Riva Compact He C2 Service 2007 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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Boiler cover options

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Related fault codes

LD2View →LD3View →

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