WATER AT REQUIRED TEMPERATURE Low

Ariston WATER AT REQUIRED TEMPERATURE Fault Code

Also written as WATERATREQUIREDTEMPERATURE — same fault.

The Ariston WATER AT REQUIRED TEMPERATURE fault code means: your boiler has reached its target heat and is temporarily pausing circulation to prevent overheating.. It appears on 1 Ariston model in our database.

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: Indicator in TCS flow chart

DIY fix possible

Check that your room thermostat is turned upEnsure radiator valves are open to allow heat to dissipateMonitor the boiler to see if it fires up again once the temperature drops

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Ariston models that show the WATER AT REQUIRED TEMPERATURE fault code

Click a model for the full fault code list and model-specific repair notes.

Source

Ariston WATER AT REQUIRED TEMPERATURE fault code information on this page is sourced and cross-checked against the official Ariston service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026