BoilerFaultCodesYour boiler has detected very low temperatures and is running its internal protection mode to prevent the pipes from freezing.
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.
Technical description: Anti-frost mode on
DIY fix possible
Check if the weather outside is currently freezing or near freezingMonitor the boiler to see if it clears once the ambient temperature risesEnsure your heating controls are not set to 'Off' during cold snaps
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A boiler cover plan would cover faults like 5 — no call-out fees, no surprises.
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Chaffoteaux Calydra 100 is discontinued — time for a new one?
Parts for discontinued models can be hard to find and expensive. A new A-rated boiler could save you money on both repairs and energy bills.
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