Low
39 on Chaffoteaux Calydra 100

Your boiler is operating normally and the burner is currently lit, which is indicated by the orange light.

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.

What the manual says

Manufacturer manual

Orange indicator - Burner ON

From this model's manual
Verified against the Chaffoteaux/Chaffoteaux Calydra 100 installation & service manual, page 29.
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 fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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All 5 fault codes on the Calydra 100

Seeing a different code? Every code this model can display, in one place.

34384041

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