Low
2 08 on Ariston Clas HE Evo

Your boiler has detected that the external temperature is very low and has activated its built-in protection mode to prevent the system 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 35 System installation & service manual, page 38.
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

Monitor the boiler to ensure it returns to normal operation once the temperature risesEnsure the condensate pipe is not frozen if it runs outsideCheck that the boiler power remains on to allow the pump and burner to run for frost protection

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