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ECO on Glow-worm Ultracom sxi

Your boiler is currently set to an energy-saving mode because your hot water temperature has dropped below 50°C, often occurring after a high demand for 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

Will be displayed when domestic hot water temperature is less than 50oC

What causes this fault?

This message appears when your boiler’s storage tank has been emptied of its hot water, typically after someone has taken a long bath or shower. To save energy, the boiler temporarily signals that it is working to reheat the water back up to your desired temperature. It is a normal part of the system's operation and simply indicates that the cylinder is currently recovering.

This occurs more frequently in winter when the incoming mains water is much colder, meaning the boiler has to work harder and longer to reheat the tank.

DIY fix possible

Wait for the boiler to reheat the water cylinder naturally.Press the 'ECO' button to toggle the mode off if you require hotter water immediately.Check that the hot water temperature setting on the control panel hasn't been turned down too low.

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