High
E9 on Worcester Bosch Hideaway

Your boiler has sensed that it is becoming dangerously hot and has shut itself down for safety.

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

Safety temperature limiter in central heating (CH) flow has tripped the system pressure or safety temperature limiter needs checking

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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