High
E48 on Biasi Rinnova Adaptive Combi

Your boiler is failing to start up because it cannot correctly adjust its internal settings to run at a low power level.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

Technical description

The system was unable to reach the minimum frequency (Minimum calibration)

Engineer required

This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Related fault codes

E49View →E21View →

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