Low
2 08 on Ariston Clas HE 28

Your boiler has detected that the internal water temperature is extremely low and is running its built-in protection mode to prevent the pipes from freezing.

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

Collector frost protection temperature

From this model's manual
Verified against the Ariston Clas He 24 installation & service manual, page 37.
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

Ensure power to the boiler remains switched onEnsure gas supply is active so the burner can fireMonitor the boiler until the temperature rises and the code clearsCheck for any frozen external pipes if the weather is extremely cold

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