Low
.0 on Worcester Bosch Greenstar 25HE

The display is simply reminding you that it is ready to show the history of any previous error codes, rather than indicating a current problem with the boiler.

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

Call up the last fault stored by the Bosch Heatronic

Engineer required

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

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