High
H21-048 on Ideal Mini HE

Your boiler's fan unit is failing to spin or communicate correctly, which forces the boiler to shut down to prevent unsafe combustion.

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

Fan (mod. miniHEC24)

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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