Worcester Bosch

Worcester Bosch Greenstar 27/30 I system Error Codes

Worcester Bosch Greenstar 27/30 I system Boiler Error Codes Fault Description System Behaviour T1 Ignition test – checking the igniter spark T2 Fan test – checking the basic fan T3 Pump test – checking the basic pump T4 Three way valve test T6 Ionisation oscillator test 9A 362 error – incorrect HCM fitted 9U 233 …

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Worcester Bosch Greenstar I System / Combi Boiler Error Codes

Worcester Bosch Greenstar I System / Combi Boiler Error Codes Fault Description System Behaviour 226 Service tool has been connected in the blocking error history menu FD 231 The power has been interrupted during a lockout C7 214 Fan does not run during the start up phase – fan harness connector needs checking C6 215 …

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Worcester Bosch CDi Classic Regular Boiler Error Codes

Worcester Bosch CDi Classic Regular Boiler Error Codes Fault Description System Behaviour B1 Code plug not detected C6 Fan speed too low E2 Central heating (CH) flow negative thermistor coefficient (NTC) sensor defective E9 Safety temperature limiter in central heating (CH) flow has tripped EA Flame not detected F0 Internal error F7 Flame detected even …

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Worcester Bosch  Greenstar 25/30 Si Combi Boiler Error Codes

Worcester Bosch  Greenstar 25/30 Si Combi Boiler Error Codes Fault Description System Behaviour T1 Ignition test – checking the igniter spark T2 Fan test – checking the basic fan T3 Pump test – checking the basic pump T4 Three way valve test T6 Ionisation oscillator test 9A 362 error – incorrect HCM fitted 9U 233 …

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Worcester Bosch CDI Highflow Combi Boiler Error Codes

Worcester Bosch CDI Highflow Combi Boiler Error Codes Fault Description System Behaviour A1 Pump dry run detection or pump is running in air the system pressure needs checking A5 Tank negative thermistor coefficient (NTC) defect A7 Domestic hot water (DHW) negative thermistor coefficient (NTC) defect A8 Energy Management System (EMS) communication error B1 Code plug …

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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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