Worcester Bosch Greenstar 1000 Combi

200 Boiler in heating mode 201 Boiler in hot water mode 202 Boiler in anti-cycle mode 203 Boiler in standby, no heat energy demand 204 Current primary water temperature higher than set val. 208 Chimney sweep demand 213 Temp difference between supply and return exceeding limit 214 Fan shut down during safety time 219 Supply or return water too hot 222 Interruption of the NTC cabling 223 Interruption of the NTC cabling 224 Safety temp. limiter has tripped 227 No flame signal after ignition 228 Flame signal without flame present 229 Flame failed during burner operation 232 Boiler locked by external switching contact 233 Boiler identification module or device electronics faulty 234 Gas valve electrical fault 235 Conflicting versions of boiler electr. and boiler identification 237 System fault 238 Boiler electronics faulty 240 Interruption of the NTC cabling 241 Interruption of the NTC cabling 245 State out of range 249 Internal software error 250 Default software error 251 Flash test error 252 Stack overflow 253 RAM test error 254 Eeprom test error 258 Internal watchdog error 259 AD reference error 262 Internal OS error 263 Program sequence error 265 Heat demand lower than energy supplied 268 Relay test was activated 269 Flame monitoring 270 Starting up boiler 273 Operation of burner and fan interrupted 275 Boiler electronics in test mode 278 Sensor test failed: DHW mode and heating mode do not function 283 Burner starting 284 Opening air/gas ratio control valve/oil solenoid valves 285 Return temperature is too hot 305 Heat exchanger in hot water anti-cycle mode 306 Flame signal after closing the fuel supply 341 Temperature rise at heat exchanger too rapid 347 Return temp exceeds flow temp for over 20 sec 351 Flow temperature sensor interrupted 353 Test non-volatile lockout 357 Ventilation program 358 Anti-seizing functn. active 360 Incomparable code plug 362 Boiler identification module or boiler electronics faulty 363 Ionisation current did not drop during ionisation test 364 Solenoid valve ev2 leaking. 365 Solenoid valve ev1 leaking. 568 Water Pressure Sensor not connected or defect 578 NTC is damaged 522 NTC Drift Test is running 604 System fault burner control unit 1010 No BUS communication 1013 Max. combustion point reached 1018 Maintenance interval expired 1019 Incorrect pump type detected 1021 Cylinder charging or hot water temperature sensor faulty 1023 Maximum run time including standby time reached 1025 Return temp. sensor is faulty 1068 Outside temp. sensor or lambda probe faulty 1073 Short circuit of the flow temperature sensor 1074 No signal from flow temperature sensor 2085 Internal fault 2207 Low level/ no PWM signal from the calculation pump 2908 System fault boiler electronics/basic controller 2910 Fault in flue system 2915 The fan keeps running after the post purge 2916 Gas valve was detected to be open during post purge 2920 Fault in flame monitoring 2923 Unexpected feedback from the modulating/ current controlled gas valve 2924 No feedback from the gas valve 2925 Too low feedback from the modulating gas valve 2926 Too high feedback from the modulating/ current controlled gas valve 2927 Flame failed during operation 2928 Internal error 2930 System fault heat exchanger electronics / basic controller 2931 Illegal instruction executed by microcontroller 2940 Low voltage 2946 Incorrect code plug detected 2948 No flame signal with low output 2949 No flame signal with high output 2950 No flame signal following starting procedure 2951 Loss of flame too many times 2952 Internal fault when testing ionisation signal 2955 Heat exchanger does not support the parameters set for the hydraulic configuration 2956 Hydraulic configuration at the heat exchanger activated 2957 Internal control error 2958 System fault, appliance electronics 2959 System fault, appliance electronics 2960 System fault, appliance electronics 2961 No fan signal available 2962 Fan not running 2963 Signal from flow and heat exchanger temperature sensor outside the permissible range 2964 Flow rate in heat exchanger too low 2965 Flow temperature too high 2966 Flow temperature rise in heat exchanger too rapid 2972 Mains voltage too low 2973 System fault boiler electronics / basic controller 2974 Internal fault 2980 Super lock out fault: The appliance has been reset 6 times within 15 minutes. (Boiler locked. Contact a qualified heating engineer) 2981 Super lock out fault: The appliance has been reset 6 times within 15 minutes. (Boiler locked. Contact a qualified heating engineer) Combustion noises too loud; rumbling noises Faults that are not displayed Flow noises Faults that are not displayed Heat-up takes too long Faults that are not displayed Flue gas values incorrect; CO content too high Faults that are not displayed Delayed ignition, poor ignition Faults that are not displayed Condensate in air box Faults that are not displayed No hot water. Faults that are not displayed DHW volume is not reached Faults that are not displayed No function, the display remains dark Faults that are not displayed