High
279 / F0 on Worcester Bosch Greenstar CDi Compact

Your boiler's computer is having trouble reading its internal sensors, which is causing it to shut down for safety because it cannot accurately monitor temperatures.

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

AD converter error, unstable measurement

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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