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Verified boiler fault-code guides
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Worcester Bosch · Greenstar 1000 Combi
- Worcester Bosch 604System fault burner control unit.
- Worcester Bosch 1010No BUS communication.
- Worcester Bosch 1013Max. combustion point reached.
- Worcester Bosch 1018Maintenance interval expired.
- Worcester Bosch 1021Cylinder charging or hot water temperature sensor faulty.
- Worcester Bosch 1023Maximum run time including standby time reached.
- Worcester Bosch 1068Outside temp. sensor or lambda probe faulty.
- Worcester Bosch 1073Short circuit of the flow temperature sensor.
- Worcester Bosch 1074No signal from flow temperature sensor.
- Worcester Bosch 2085Internal fault.
- Worcester Bosch 2908System fault boiler electronics/basic controller.
- Worcester Bosch 2972Mains voltage too low.
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