Low
0.0 on Worcester Bosch 537i

Your boiler is displaying a placeholder code signifying that no new faults have been detected since the last time the system's history was cleared.

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.

What the manual says

Manufacturer manual

The last fault occurred (if a fault has occurred, the display will show 0.0 and the last fault).

From this model's manual
Verified against the Worcester Bosch 537i installation & service manual.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

DIY fix possible

Press the 'Reset' button to return the boiler to its normal operating displayCheck if your heating and hot water are functioning as normalMonitor the display to see if a specific error code (e.g., EA or F7) appears alongside this code

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