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 boiler is on standby
204 The boiler is waiting – the actual temperature is higher than the calculated or selected boiler temperature
212 The temperature recorded by the flow temperature sensor or the safety sensor is rising too quickly
226 Diagnosis tool was connected and is now locked out
260 The flow temperature sensor is not detecting a rise in temperature following a burner start
265 The boiler is waiting in response to a heat demand – the boiler regularly switches to partial load
268 Component test phase
270 The boiler is modulating upwards
283 The boiler is preparing for a burner start – the fan and pump are activated
284 The gas valve is switched
305 The boiler is waiting for domestic hot water (DHW) operation to end
235 The KIM (boiler identification module) is too new for the burner control unit
360 The KIM that has been fitted is not compatible with the burner control unit
9A 361 The burner control unit that has been fitted is not compatible with the KIM (boiler identification module)
9U 233 The burner control unit or KIM (boiler identification module) is faulty
A3 317 Short circuit in the flue gas temperature sensor contacts
B7 257 The burner control unit or the KIM (boiler identification module) is faulty
C1 264 No control signal or power supply to the fan during operation
C4 273 The boiler was switched off for a maximum of 2 minutes because it had been operating continuously for more than 24 hours
C6 215 The fan speed is too high
C6 216 The fan speed is too low
C7 214 The fan does not run during the start phase
C7 217 The fan speed is irregular when starting up
CE 207 Water pressure is too low
CE 266 Pump test failed
D1 240 The contacts of the boiler return temperature sensor have been short circuited
D1 241 The contacts of the boiler return temperature sensor have been interrupted
D3 232 The external switching contact has opened
D4 213 The actual temperature recorded by the flow temperature sensor or return temperature sensor is rising too quickly
D4 271 Actual temperature differential between flow and safety temperature sensor is too high
D4 286 The boiler return temperature sensor has detected a return temperature higher than 105°c
E2 222 Short circuit in the flow temperature sensor contacts
E2 223 The flow temperature sensor contacts have been interrupted
E5 218 The temperature captured by the flow temperature sensor exceeded 105°c
E9 210 The temperature measured by the flue gas sensor is too high and is open
E9 219 The safety temperature sensor has captured a temperature in excess of 105°C
E9 220 The contacts for the safety temperature sensor have shorted or the safety temperature sensor has detected a temperature higher than 130°c
E9 224 The contacts of the safety temperature sensor have been interrupted
E9 276 The temperature flow sensor has measured a temperature in excess of 95°c
E9 277 The safety temperature sensor has measured temperature in excess of 95°c
E9 285 The boiler return temperature sensor has measured a temperature higher than 95°c
E9 318 The flue gas temperature sensor contacts have been interrupted
EA 227 An insufficient ionisation current was measured following ignition of the burner
EA 229 The ionisation current detected by the system during the burning phase was insufficient
EA 234 The contacts of the gas valve have been interrupted
EA 261 The burner control unit is faulty
EA 269 The ignition device has been activated for too long
F0 238 The burner control unit KIM (boiler identification module) is faulty
F0 239 The burner control unit KIM (boiler identification module) has an error. Cabling might have poor contact breaks and pinching or the plug and wiring of the burner control unit needs checking, also check the operating characteristics of the boiler by replacing the burner control unit.
F0 242, F0 243. F0 244. F0 245, F0 246. F0 247, F0 248, F0 249, F0 250, F0 251, F0 252, F0 253, F0 255, F0 259, F0 263, F0 267, F0 272 The burner control unit (KIM) is faulty – the wiring of the burner control unit needs checking, also check the operating characteristics of the boiler by replacing the burner control unit.
F0 278 The sensor test has failed – cabling and plug sensors need checking
F0 279 The burner control unit, or KIM, is faulty – control unit may need replacing
F0 280 The burner control unit is faulty
F0 287 The burner control unit, or KIM, has an error
F0 290 The burner control unit, or KIM, is faulty
F7 228 An ionisation current was measured before the burner started
F7 328 A brief power failure has occurred
FA 306 An ionisation current was measured after the burner went out
FD 231 The mains voltage was interrupted during an interlocking fault
EC 256 The burner control unit has an error
EH 258 The burner control unit is faulty – check the plug and wiring of the burner control unit.
H07 The current water pressure is too low, limiting the performance in heat mode as well as domestic hot water (DHW) mode
HrE The boiler keeps resetting
rE The boiler resets

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