Worcester Bosch · Boilers and HVAC
Worcester Bosch Greenstar 2000 gas boiler
Product information, applicable models, official documentation and 109 indexed error-code explanations for Greenstar 2000 gas boiler.
109indexed codes
1named models or series
1official links
About Worcester Bosch Greenstar 2000 gas boiler
Worcester Bosch Greenstar 2000 gas boiler is indexed in the Boilers and HVAC directory for United Kingdom. This page brings the available product context, model references, documentation and diagnostic codes together in one place.
The codes below apply only where the linked code page lists this product or model. Confirm the complete model identifier because manufacturers may reuse the same characters across different ranges, generations and control systems.
An error code describes a condition detected by the product; it does not prove that a named component has failed. Follow the exact manual, avoid repeated resets and use an appropriately qualified technician whenever checks require internal access.
Models and series
Greenstar 2000
Start here
Common Greenstar 2000 gas boiler codes
Frequently useful high-priority and recently documented entries.
2981Worcester Bosch · Greenstar 2000 gas boiler · United KingdomBoiler locked after repeated resetsWorcester Bosch documents 2981 for the Greenstar 2000 gas boiler as “Boiler locked after repeated resets”. This is…2980Worcester Bosch · Greenstar 2000 gas boiler · United KingdomSuper lockout after repeated resetsWorcester Bosch documents 2980 for the Greenstar 2000 gas boiler as “Super lockout after repeated resets”. This is…2974Worcester Bosch · Greenstar 2000 gas boiler · United KingdomInternal faultWorcester Bosch documents 2974 for the Greenstar 2000 gas boiler as “Internal fault”. This is the quick answer…2973Worcester Bosch · Greenstar 2000 gas boiler · United KingdomBoiler electronics or controller system faultWorcester Bosch documents 2973 for the Greenstar 2000 gas boiler as “Boiler electronics or controller system fault”. This…2972Worcester Bosch · Greenstar 2000 gas boiler · United KingdomMains voltage too lowWorcester Bosch documents 2972 for the Greenstar 2000 gas boiler as “Mains voltage too low”. This is the…2966Worcester Bosch · Greenstar 2000 gas boiler · United KingdomHeat-exchanger flow temperature rising too rapidlyWorcester Bosch documents 2966 for the Greenstar 2000 gas boiler as “Heat-exchanger flow temperature rising too rapidly”. This…2965Worcester Bosch · Greenstar 2000 gas boiler · United KingdomFlow temperature too highWorcester Bosch documents 2965 for the Greenstar 2000 gas boiler as “Flow temperature too high”. This is the…2964Worcester Bosch · Greenstar 2000 gas boiler · United KingdomHeat-exchanger flow rate too lowWorcester Bosch documents 2964 for the Greenstar 2000 gas boiler as “Heat-exchanger flow rate too low”. This is…
Complete directory
All Greenstar 2000 gas boiler error codes
Showing 31–60 of 109
237Worcester Bosch · Greenstar 2000 gas boiler · United KingdomSystem faultWorcester Bosch documents 237 for the Greenstar 2000 gas boiler as “System fault”. This is the quick answer…238Worcester Bosch · Greenstar 2000 gas boiler · United KingdomBoiler electronics faultWorcester Bosch documents 238 for the Greenstar 2000 gas boiler as “Boiler electronics fault”. This is the quick…240Worcester Bosch · Greenstar 2000 gas boiler · United KingdomReturn temperature sensor wiring interruptedWorcester Bosch documents 240 for the Greenstar 2000 gas boiler as “Return temperature sensor wiring interrupted”. This is…241Worcester Bosch · Greenstar 2000 gas boiler · United KingdomReturn temperature sensor wiring interruptedWorcester Bosch documents 241 for the Greenstar 2000 gas boiler as “Return temperature sensor wiring interrupted”. This is…245Worcester Bosch · Greenstar 2000 gas boiler · United KingdomState outside permitted rangeWorcester Bosch documents 245 for the Greenstar 2000 gas boiler as “State outside permitted range”. This is the…249Worcester Bosch · Greenstar 2000 gas boiler · United KingdomInternal software errorWorcester Bosch documents 249 for the Greenstar 2000 gas boiler as “Internal software error”. This is the quick…250Worcester Bosch · Greenstar 2000 gas boiler · United KingdomDefault software errorWorcester Bosch documents 250 for the Greenstar 2000 gas boiler as “Default software error”. This is the quick…251Worcester Bosch · Greenstar 2000 gas boiler · United KingdomFlash memory test errorWorcester Bosch documents 251 for the Greenstar 2000 gas boiler as “Flash memory test error”. This is the…252Worcester Bosch · Greenstar 2000 gas boiler · United KingdomStack overflowWorcester Bosch documents 252 for the Greenstar 2000 gas boiler as “Stack overflow”. This is the quick answer…253Worcester Bosch · Greenstar 2000 gas boiler · United KingdomRAM test errorWorcester Bosch documents 253 for the Greenstar 2000 gas boiler as “RAM test error”. This is the quick…254Worcester Bosch · Greenstar 2000 gas boiler · United KingdomEEPROM test errorWorcester Bosch documents 254 for the Greenstar 2000 gas boiler as “EEPROM test error”. This is the quick…258Worcester Bosch · Greenstar 2000 gas boiler · United KingdomInternal watchdog errorWorcester Bosch documents 258 for the Greenstar 2000 gas boiler as “Internal watchdog error”. This is the quick…259Worcester Bosch · Greenstar 2000 gas boiler · United KingdomAD reference errorWorcester Bosch documents 259 for the Greenstar 2000 gas boiler as “AD reference error”. This is the quick…262Worcester Bosch · Greenstar 2000 gas boiler · United KingdomInternal operating-system errorWorcester Bosch documents 262 for the Greenstar 2000 gas boiler as “Internal operating-system error”. This is the quick…263Worcester Bosch · Greenstar 2000 gas boiler · United KingdomProgram sequence errorWorcester Bosch documents 263 for the Greenstar 2000 gas boiler as “Program sequence error”. This is the quick…265Worcester Bosch · Greenstar 2000 gas boiler · United KingdomHeat demand lower than energy suppliedWorcester Bosch documents 265 for the Greenstar 2000 gas boiler as “Heat demand lower than energy supplied”. This…268Worcester Bosch · Greenstar 2000 gas boiler · United KingdomRelay test activatedWorcester Bosch documents 268 for the Greenstar 2000 gas boiler as “Relay test activated”. This is the quick…269Worcester Bosch · Greenstar 2000 gas boiler · United KingdomFlame monitoring faultWorcester Bosch documents 269 for the Greenstar 2000 gas boiler as “Flame monitoring fault”. This is the quick…270Worcester Bosch · Greenstar 2000 gas boiler · United KingdomBoiler starting upWorcester Bosch documents 270 for the Greenstar 2000 gas boiler as “Boiler starting up”. This is the quick…273Worcester Bosch · Greenstar 2000 gas boiler · United KingdomBurner and fan operation interruptedWorcester Bosch documents 273 for the Greenstar 2000 gas boiler as “Burner and fan operation interrupted”. This is…275Worcester Bosch · Greenstar 2000 gas boiler · United KingdomBoiler electronics in test modeWorcester Bosch documents 275 for the Greenstar 2000 gas boiler as “Boiler electronics in test mode”. This is…278Worcester Bosch · Greenstar 2000 gas boiler · United KingdomSensor test failed in hot-water and heating modesWorcester Bosch documents 278 for the Greenstar 2000 gas boiler as “Sensor test failed in hot-water and heating…283Worcester Bosch · Greenstar 2000 gas boiler · United KingdomBurner startingWorcester Bosch documents 283 for the Greenstar 2000 gas boiler as “Burner starting”. This is the quick answer…284Worcester Bosch · Greenstar 2000 gas boiler · United KingdomAir-gas ratio control valve openingWorcester Bosch documents 284 for the Greenstar 2000 gas boiler as “Air-gas ratio control valve opening”. This is…285Worcester Bosch · Greenstar 2000 gas boiler · United KingdomReturn temperature too highWorcester Bosch documents 285 for the Greenstar 2000 gas boiler as “Return temperature too high”. This is the…2908Worcester Bosch · Greenstar 2000 gas boiler · United KingdomBoiler electronics or basic-controller system faultWorcester Bosch documents 2908 for the Greenstar 2000 gas boiler as “Boiler electronics or basic-controller system fault”. This…2910Worcester Bosch · Greenstar 2000 gas boiler · United KingdomFlue-system faultWorcester Bosch documents 2910 for the Greenstar 2000 gas boiler as “Flue-system fault”. This is the quick answer…2915Worcester Bosch · Greenstar 2000 gas boiler · United KingdomFan continues running after post-purgeWorcester Bosch documents 2915 for the Greenstar 2000 gas boiler as “Fan continues running after post-purge”. This is…2916Worcester Bosch · Greenstar 2000 gas boiler · United KingdomGas valve detected open during post-purgeWorcester Bosch documents 2916 for the Greenstar 2000 gas boiler as “Gas valve detected open during post-purge”. This…2920Worcester Bosch · Greenstar 2000 gas boiler · United KingdomFlame-monitoring faultWorcester Bosch documents 2920 for the Greenstar 2000 gas boiler as “Flame-monitoring fault”. This is the quick answer…