High
E05 on Ferroli Maxima 35 S

Your boiler's heating water temperature sensor has detected a fault, meaning the system can no longer accurately read how hot the water is.

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

Fault code if they should occur (see page 27 troubleshooting)

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

E06View →

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