Boiler Fault Codes

Worcester Bosch Greenstar Ri Boiler Error Codes

Worcester Bosch Greenstar Ri Boiler Error Codes Fault Description System Behaviour No light No power at control board Light on Appliance 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 flash Volatile lockout sensor fan …

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Worcester Bosch CDI Highflow Combi Boiler Error Codes

Worcester Bosch CDI Highflow Combi Boiler Error Codes A light on your boiler will flash to indicate that there is a fault. Depending on the type of fault, the light will flash in a different sequence. There will be 4 quick flashes followed by a 5 second gap when the light is off and finally …

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Worcester Bosch GB162 Boiler Error Codes

Worcester Bosch GB162 Boiler Error Codes Fault Description System Behaviour 208 The boiler is in chimney sweep mode 200 The boiler is in heating mode 201 The boiler is in domestic hot water (DHW) mode 202 The boiler is waiting – there was a heat demand from the on off or modulating control 203 The …

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Vaillant CI-SI Boiler Error Codes

Fault Codes Fault Description Possible Causes Fault Code F1 Ignition Failure Insufficient Inlet Working Gas Pressure At The Appliance Flue Problem Spark Generation Issue Incorrect Gas Valve Adjustment (Minimum Burner Pressure Set Too Low) Flame Rectification Issue Combustion Issue (Poor Flame Picture) Software Error On The Main PCB Or The User Interface PCB Fault Code F2 Air Fault Fan Fault Fan …

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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 Compact Error Codes

Worcester Bosch CDi Compact 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 Heat Control …

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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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