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Worcester Bosch Greenstar Ri Boiler Error Codes

Fault DescriptionSystem Behaviour
No lightNo power at control board
Light onAppliance on but not operating during demand
Slow flash ( mostly off flashes on)Ignition lockout
Slow flash ( mostly on flashes off)Flue overheat or heat exchanger overheat
Fast flashVolatile lockout sensor fan or code plug
2 pulsesCheck service mode switch is in minimum position
5 pulsesCheck service mode switch is in max position

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