High
FAIL POINT G on Worcester Bosch 28 RSF

Your boiler has detected that it is getting too hot and has automatically shut down to prevent damage to its internal components.

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

Primary Overheat: Boiler not fully water pressurised, air in system, pump failure, primary sensor not correctly fixed, or overheat thermostat short circuit across ST16 contacts 5 & 6.

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

FAIL POINT FView →FAIL POINT HView →

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