Low
00 on Saunier Duval Isofast F28E

Your boiler is operating normally and there are no current faults detected.

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

No fault

From this model's manual
Verified against the Saunier Duval Isofast F28e installation & service manual, page 30.
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

No action is required as the boiler is functioning correctly.

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