Biasi Maintenance required Fault Code
Also written as MAINTENANCEREQUIRED — same fault.
The Biasi Maintenance required fault code means: your boiler is simply reminding you that its annual service is due and it needs a routine checkup by a professional.. It appears on 1 Biasi model in our database.
Technical description: The wrench symbol is flashing (without showing any error). It indicates the expiry of the maintenance period.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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Gas Safe Register →Biasi models that show the Maintenance required fault code
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Source
Biasi Maintenance required fault code information on this page is sourced and cross-checked against the official Biasi service / installation manuals for each affected model.
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026