Low
S.90 on Heatline CaprizPlus 24a

Your boiler is currently running a final self-diagnostic test to ensure everything is working correctly after being switched on or reset.

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.

What the manual says

Manufacturer manual

End of fi nal control test

From this model's manual
Verified against the Heatline Caprizplus 24a installation & service manual, page 26.
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

Wait for 5-10 minutes as this is a normal status message and not a fault code.If the code does not disappear, turn the power off and back on again.If the boiler is stuck on this code indefinitely, contact a Gas Safe engineer.

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