Worcester Bosch · Boilers and HVAC
Worcester Bosch Greenstar 1000 gas boiler
Product information, applicable models, official documentation and 109 indexed error-code explanations for Greenstar 1000 gas boiler.
109indexed codes
1named models or series
1official links
About Worcester Bosch Greenstar 1000 gas boiler
Worcester Bosch Greenstar 1000 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 1000
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Common Greenstar 1000 gas boiler codes
Frequently useful high-priority and recently documented entries.
2981Worcester Bosch · Greenstar 1000 gas boiler · United KingdomBoiler locked after repeated resetsWorcester Bosch documents code 2981 on the Greenstar 1000 as “Boiler locked after repeated resets”. This is a…2980Worcester Bosch · Greenstar 1000 gas boiler · United KingdomSuper lockout after repeated resetsWorcester Bosch documents code 2980 on the Greenstar 1000 as “Super lockout after repeated resets”. This is a…2974Worcester Bosch · Greenstar 1000 gas boiler · United KingdomInternal faultWorcester Bosch documents code 2974 on the Greenstar 1000 as “Internal fault”. This is a diagnostic condition that…2973Worcester Bosch · Greenstar 1000 gas boiler · United KingdomBoiler electronics or controller system faultWorcester Bosch documents code 2973 on the Greenstar 1000 as “Boiler electronics or controller system fault”. This is…2972Worcester Bosch · Greenstar 1000 gas boiler · United KingdomMains voltage too lowWorcester Bosch documents code 2972 on the Greenstar 1000 as “Mains voltage too low”. This is a diagnostic…2966Worcester Bosch · Greenstar 1000 gas boiler · United KingdomHeat-exchanger flow temperature rising too rapidlyWorcester Bosch documents code 2966 on the Greenstar 1000 as “Heat-exchanger flow temperature rising too rapidly”. This is…2965Worcester Bosch · Greenstar 1000 gas boiler · United KingdomFlow temperature too highWorcester Bosch documents code 2965 on the Greenstar 1000 as “Flow temperature too high”. This is a diagnostic…2964Worcester Bosch · Greenstar 1000 gas boiler · United KingdomHeat-exchanger flow rate too lowWorcester Bosch documents code 2964 on the Greenstar 1000 as “Heat-exchanger flow rate too low”. This is a…
Complete directory
All Greenstar 1000 gas boiler error codes
Showing 31–60 of 109
237Worcester Bosch · Greenstar 1000 gas boiler · United KingdomSystem faultWorcester Bosch documents code 237 on the Greenstar 1000 as “System fault”. This is a diagnostic condition that…238Worcester Bosch · Greenstar 1000 gas boiler · United KingdomBoiler electronics faultWorcester Bosch documents code 238 on the Greenstar 1000 as “Boiler electronics fault”. This is a diagnostic condition…240Worcester Bosch · Greenstar 1000 gas boiler · United KingdomReturn temperature sensor wiring interruptedWorcester Bosch documents code 240 on the Greenstar 1000 as “Return temperature sensor wiring interrupted”. This is a…241Worcester Bosch · Greenstar 1000 gas boiler · United KingdomReturn temperature sensor wiring interruptedWorcester Bosch documents code 241 on the Greenstar 1000 as “Return temperature sensor wiring interrupted”. This is a…245Worcester Bosch · Greenstar 1000 gas boiler · United KingdomState outside permitted rangeWorcester Bosch documents code 245 on the Greenstar 1000 as “State outside permitted range”. This is a diagnostic…249Worcester Bosch · Greenstar 1000 gas boiler · United KingdomInternal software errorWorcester Bosch documents code 249 on the Greenstar 1000 as “Internal software error”. This is a diagnostic condition…250Worcester Bosch · Greenstar 1000 gas boiler · United KingdomDefault software errorWorcester Bosch documents code 250 on the Greenstar 1000 as “Default software error”. This is a diagnostic condition…251Worcester Bosch · Greenstar 1000 gas boiler · United KingdomFlash memory test errorWorcester Bosch documents code 251 on the Greenstar 1000 as “Flash memory test error”. This is a diagnostic…252Worcester Bosch · Greenstar 1000 gas boiler · United KingdomStack overflowWorcester Bosch documents code 252 on the Greenstar 1000 as “Stack overflow”. This is a diagnostic condition that…253Worcester Bosch · Greenstar 1000 gas boiler · United KingdomRAM test errorWorcester Bosch documents code 253 on the Greenstar 1000 as “RAM test error”. This is a diagnostic condition…254Worcester Bosch · Greenstar 1000 gas boiler · United KingdomEEPROM test errorWorcester Bosch documents code 254 on the Greenstar 1000 as “EEPROM test error”. This is a diagnostic condition…258Worcester Bosch · Greenstar 1000 gas boiler · United KingdomInternal watchdog errorWorcester Bosch documents code 258 on the Greenstar 1000 as “Internal watchdog error”. This is a diagnostic condition…259Worcester Bosch · Greenstar 1000 gas boiler · United KingdomAD reference errorWorcester Bosch documents code 259 on the Greenstar 1000 as “AD reference error”. This is a diagnostic condition…262Worcester Bosch · Greenstar 1000 gas boiler · United KingdomInternal operating-system errorWorcester Bosch documents code 262 on the Greenstar 1000 as “Internal operating-system error”. This is a diagnostic condition…263Worcester Bosch · Greenstar 1000 gas boiler · United KingdomProgram sequence errorWorcester Bosch documents code 263 on the Greenstar 1000 as “Program sequence error”. This is a diagnostic condition…265Worcester Bosch · Greenstar 1000 gas boiler · United KingdomHeat demand lower than energy suppliedWorcester Bosch documents code 265 on the Greenstar 1000 as “Heat demand lower than energy supplied”. This is…268Worcester Bosch · Greenstar 1000 gas boiler · United KingdomRelay test activatedWorcester Bosch documents code 268 on the Greenstar 1000 as “Relay test activated”. This is an operating status…269Worcester Bosch · Greenstar 1000 gas boiler · United KingdomFlame monitoring faultWorcester Bosch documents code 269 on the Greenstar 1000 as “Flame monitoring fault”. This is a diagnostic condition…270Worcester Bosch · Greenstar 1000 gas boiler · United KingdomBoiler starting upWorcester Bosch documents code 270 on the Greenstar 1000 as “Boiler starting up”. This is an operating status…273Worcester Bosch · Greenstar 1000 gas boiler · United KingdomBurner and fan operation interruptedWorcester Bosch documents code 273 on the Greenstar 1000 as “Burner and fan operation interrupted”. This is an…275Worcester Bosch · Greenstar 1000 gas boiler · United KingdomBoiler electronics in test modeWorcester Bosch documents code 275 on the Greenstar 1000 as “Boiler electronics in test mode”. This is an…278Worcester Bosch · Greenstar 1000 gas boiler · United KingdomSensor test failed in hot-water and heating modesWorcester Bosch documents code 278 on the Greenstar 1000 as “Sensor test failed in hot-water and heating modes”.…283Worcester Bosch · Greenstar 1000 gas boiler · United KingdomBurner startingWorcester Bosch documents code 283 on the Greenstar 1000 as “Burner starting”. This is an operating status rather…284Worcester Bosch · Greenstar 1000 gas boiler · United KingdomAir-gas ratio control valve openingWorcester Bosch documents code 284 on the Greenstar 1000 as “Air-gas ratio control valve opening”. This is an…285Worcester Bosch · Greenstar 1000 gas boiler · United KingdomReturn temperature too highWorcester Bosch documents code 285 on the Greenstar 1000 as “Return temperature too high”. This is a diagnostic…2908Worcester Bosch · Greenstar 1000 gas boiler · United KingdomBoiler electronics or basic-controller system faultWorcester Bosch documents code 2908 on the Greenstar 1000 as “Boiler electronics or basic-controller system fault”. This is…2910Worcester Bosch · Greenstar 1000 gas boiler · United KingdomFlue-system faultWorcester Bosch documents code 2910 on the Greenstar 1000 as “Flue-system fault”. This is a diagnostic condition that…2915Worcester Bosch · Greenstar 1000 gas boiler · United KingdomFan continues running after post-purgeWorcester Bosch documents code 2915 on the Greenstar 1000 as “Fan continues running after post-purge”. This is a…2916Worcester Bosch · Greenstar 1000 gas boiler · United KingdomGas valve detected open during post-purgeWorcester Bosch documents code 2916 on the Greenstar 1000 as “Gas valve detected open during post-purge”. This is…2920Worcester Bosch · Greenstar 1000 gas boiler · United KingdomFlame-monitoring faultWorcester Bosch documents code 2920 on the Greenstar 1000 as “Flame-monitoring fault”. This is a diagnostic condition that…