Worcester Bosch CDI Classic Combi Boiler Error Codes

Worcester Bosch CDI Classic Combi Boiler Error Codes Fault Description System Behaviour A1 Water is leaking or the pump needs replacing or freeing due to the pump running dry. A7 The hot water negative thermistor coefficient (NTC) sensor is defective – the hot water sensor or connecting leads need checking. A8 Break communication to FX …

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