Low
2 04 on Ariston Clas System 28

Your boiler is having trouble communicating with the solar panel sensor, which may limit the system's ability to use solar energy to heat your water.

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

Circuito aperto o cortocircuito sonda collettore solare

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Related fault codes

2 01View →2 02View →

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