FAULTNEST FAULT CODES
Worcester Bosch Boilers & Heating Fault Codes
Browse Worcester Bosch boilers & heating fault and error codes, meanings, likely causes and diagnostic checks.
AVAILABLE CODES
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6 published codes currently listed for this manufacturer and category.
Pump stuck or running in air
The boiler has detected a circulation-pump condition consistent with a stuck pump or pump operation with insufficient water.
Fan speed fault
The boiler has detected combustion-fan speed outside the expected range.
Fan or airflow fault
The boiler has detected that the combustion fan is not running correctly or that airflow has not been established.
System pressure too low
The boiler reports that central-heating system pressure is below the required level.
Flow temperature sensor fault
The boiler has detected the flow temperature sensor as shorted or disconnected.
No ionisation detected after ignition
The boiler has attempted ignition but has not detected the expected flame ionisation signal.
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