Low
2 08 on Ariston Clas One

Your boiler has detected that the external conditions are cold enough to risk freezing, so it is temporarily running its protective systems to keep internal parts from being damaged by ice.

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.

Technical description

Collector frost protection temperature

DIY fix possible

Ensure the boiler's power supply remains switched onMonitor the boiler until the cycle completes and it returns to normal operationCheck that internal heating remains active once the external temperature rises

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Related fault codes

2 01View →2 02View →2 04View →

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