Medium
d.94 on Heatline Vizo 24

Your boiler has detected an internal software hiccup and requires a manual reset to attempt to clear the error and resume normal operation.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Book a service

This fault should be looked at by a Gas Safe engineer within the next week or two. It may get worse if left.

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 front control panelPress and hold the reset button for approximately 3 secondsWait for the boiler to cycle through its startup sequence and check if the error clears

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Related fault codes

d.93View →d.95View →

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