Low
d.94 on Heatline Vizo 28

Your boiler is notifying you that a system reset has been triggered to clear previous error records.

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

Reset the fault codes

From this model's manual
Verified against the Heatline Capriz Plus installation & service manual, page 25.
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

Locate the Reset button on the boiler's control panelPress and hold the button for 3 to 5 secondsWait for the display to return to normal operating mode

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