High
AC on Worcester Bosch TA 211 E

Your boiler is struggling to communicate with its control panel or thermostat, preventing it from knowing when to turn on your heating or hot water.

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

Kontaktfehler oder Störung im Regler

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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