Low
01 to 99 on Chaffoteaux Calydra 24 Green

Your boiler is displaying a list of the most recent historical errors stored in its memory rather than an active, ongoing fault.

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

Last default occured

From this model's manual
Verified against the Chaffoteaux Calydra 23 Green 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.

DIY fix possible

Press the Reset button once to clear the menuMonitor the boiler to see if a specific active fault code appearsEnsure your system pressure is topped up to roughly 1.5 bar

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Boiler cover options

Avoid the next call-out bill

A cover plan would handle faults like 01 to 99: no call-out fees, no surprise bills.

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