Low
0 nn on Keston C90 / C110

Your boiler is currently in standby mode because it is not receiving a signal from your thermostat or timer to provide heating or hot 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

Module in standby as no heat request from either zone

DIY fix possible

Check that your heating timer or programme is set to 'On'Turn up the temperature on your room thermostat to see if the boiler fires upEnsure the boiler's own internal temperature or mode settings are currently active

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