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boiler service, boiler repair, emergency repair
Worcester Greenstar 30 i LPG ErP Boiler Fault Codes
| Display Text | Cause Code | Description | Possible Cause/Check |
| No service request | H-- | No maintenance request messages available. | There are no more maintenance messages available |
| Planned maintenance required | H03 |
The number of operating hours set for service interval has expired. • This will appear on the appliance display screen. • Can also be accessed in the maintenance menu. |
This message will only be available if burner hours service option has been enabled in intelligent controller. ▶ Reset maintenance message, (press reset button). ▶ Carry out a service and reset the service reminder. |
| Burner hours set | h03 | The number of operating hours set for service interval has not been reached at the time the maintenance menu messages are accessed. |
This message will only be available if burner hours service option has been enabled in intelligent controller. ▶ Reset maintenance message, press reset button. ▶ If a service has been carried out at visit, reset the service reminder. |
| H08 |
The set interview date has expired. Maintenance required. • This will appear on the appliance display screen. • Can also be accessed in the maintenance menu. |
This message will only be available if burner hours service option has been enabled in intelligent controller. ▶ Reset maintenance message, (press reset button). ▶ Carry out a service and reset the service reminder. |
|
| Service date set | h08 | Confirmation of service date. |
This message will only be available if burner hours service option has been enabled in intelligent controller. ▶ Reset maintenance message, (press reset button). |
| Pump communications error | H09 | Communications to the pump has failed. |
▶ Check: – Electrical connections are fitted correctly. – Correct pump has been fitted. – Once checked, re power the appliance for test of communications. |
| Hot water flow sensor defect | H11 | DHW temperature sensor defect. |
▶ Check: – Sensor harness and connector. – Operation, replace if necessary. |
| H13 |
The maximum maintenance interval set (in months), has exceeded or after the appliance has been placed into commissioning mode. • This will appear on the appliance display screen. • Can also be accessed in the maintenance menu. |
▶ Reset maintenance message, (press reset button). ▶ Carry out a service and reset the service reminder. – Service reminder is set in boiler setting 2.5F (section 6.5.13, page 43). – Service reminder function details (section 6.5.10, page 42). |
|
| Number of months set | h13 | The maximum maintenance interval set (in months), has not been reached or after the appliance has been placed into commissioning mode. |
▶ Reset maintenance message, (press reset button). ▶ If a service has been carried out at visit, reset the service reminder. – Service reminder is set in boiler setting 2.5F (section 6.5.13, page 43). – Service reminder function details (section 6.5.10, page 42). |
| H29 | Outdoor sensor defect (available when accessory outdoor sensor is connected) |
▶ Check: – Sensor harness and connector. – Operation, replace if necessary. |
Error Codes
|
Display Text |
Fault Code |
Cause Code | Description | Possible Solution/Check |
|
|
|
226 | Service tool has been connected | In the blocking error history menu it records if the service tool has been connected |
|
Electrical interruption fault |
Fd |
231 | The power has been interrupted during a lockout |
▶ Check locking error history: – Lockout fault will always be last code before FD code. ▶ Reset the appliance |
|
Fan/Airflow fault |
C7 |
214 | Fan does not run during the start up phase |
▶ Check: – Fan harness and connector. – 230 Vac across brown and blue wires. – Fan operation, replace if necessary. – Connections of the control box. ▶ Replace control box if necessary. |
|
Fan/Airflow fault |
C6 |
215 | Fan speed too high |
▶ Check: – Fan harness and connector. – Fan operation, replace if necessary. – Connections of the control box. ▶ Replace control box if necessary. |
|
Fan/Airflow fault |
C6 |
216 | Fan speed too low |
▶ Check: – Fan harness and connector. – Fan operation, replace if necessary. – Connections of the control box. ▶ Replace control box if necessary. |
|
Fan/Airflow fault |
C7 |
217 | Fan has stopped during appliance operation |
▶ Check: – Fan harness and connector. – 230 Vac across brown and blue wires. – Fan operation, replace if necessary. – Connections of the control box. ▶ Replace control box if necessary. |
|
Fan/Airflow fault |
C1 |
264 | Fan stopped during operation |
▶ Check: – Fan harness and connector. – 230 Vac across brown and blue wires. – Operation, replace if necessary. |
|
Fan/Airflow fault |
C4 |
273 | Continuous fan operation for the last 24 hours (appliance temporary blocked) | ▶ Check if demand has been calling for the 24 hours. Appliance has been blocked from firing for a minimum of 2 minutes as it has been operated continuously for 24 hours. |
|
Flow sensor fault |
E2 |
222 | Flow temperature sensor shorted |
▶ Check: – Sensor harness and connector. – Operation, replace if necessary. |
|
Flow sensor fault |
E2 |
223 | Flow temperature sensor disconnected |
▶ Check: – Sensor harness and connector. – Operation, replace if necessary. |
|
Flow sensor fault |
E9 |
276 | Primary Flow temperature exceeded 95 °C |
▶ Check: – Primary system water pressure. – For air in the system – Circulation within heating system. – Wiring and operation of the pump and flow temperature sensor, replace part/s if necessary. |
|
Flow sensor fault |
E2 |
350 | Flow temperature sensor shorted |
▶ Check: – Sensor harness and connector. – Operation, replace if necessary. |
|
Flow sensor fault |
E2 |
351 | Flow temperature sensor disconnected |
▶ Check: – Sensor harness and connector. – Operation, replace if necessary. |
| Gas valve fault | FA | 306 | Ionisation detected after the gas valve closed. |
▶ Inspect the ionization probe, replace if necessary. ▶ Check that the condensate is discharging. ▶ Check 230Vac across blue & orange wires to the coils. – Replace gas valve if no voltage. – Replace control box if there is voltage |
| Ignition/Ionisation fault | EA | 227 | No ionisation detected after ignition |
▶ Check: – The dynamic gas pressure. – The flue system for restrictions. – The gas-air ratio (if possible). – Connectors of the ignition unit. – Ignition and ionisation current. – Ignition unit for damage or wear, replace if necessary. – Gas valve operation. – Appliance for contamination. |
| Ignition/Ionisation fault | F7 | 228 | Ionisation current detected before burner-start |
▶ Check: – Condition of the ionisation probe. – Connection of the ionisation probe. – Condensate is discharging correctly. – Replace parts if necessary. |
| Ignition/Ionisation fault | EA | 229 | Loss of ionisation signal during operation |
▶ Check: – The gas-air ratio. – The dynamic gas. – Wiring and connection of flame probe. – Replace flame probe necessary. |
| Ignition/Ionisation fault | EA | 261 | HCM potentially defective |
▶ Reset the appliance. If continues to go to this error ▶ Check: – HCM is inserted properly. – HCM number. ▶ Contact technical helpline. |
| Internal error | 9U | 233 | Control box or HCM is defective or loose |
▶ Check: – HCM is inserted properly. – Replace HCM if necessary. – Connections of the control box. ▶ Replace control box if necessary. |
| Internal error | C4 | 237 | Control box or the HCM is defective. |
▶ Check: – HCM is inserted properly. – Replace HCM if necessary. – Connections of the control box. ▶ Replace control box if necessary. |
| Internal error | F0 | 238 | Gas valve or control box error |
▶ Check: – Gas valve coils: 230V ac across blue & orange wires. – Replace gas valve if necessary. – Connections of the control box. ▶ Replace control box if necessary. |
| Internal error | F0 | 239 | Control box or the HCM is defective. |
▶ Check: – HCM is inserted properly. – Replace HCM if necessary. – Connections of the control box. ▶ Replace control box if necessary. |
| Internal error | F0 | 242-256 | Control box or the HCM is defective. |
▶ Check: – HCM is inserted properly. – Connections of the control box. ▶ Contact technical helpline. |
| Internal error | b7 | 257 | Control box or the HCM is defective. |
▶ Check: – HCM is inserted properly. – Connections of the control box. ▶ Contact technical helpline. |
| Internal error |
F0 EH |
258 258 |
Control box or the HCM is defective. |
▶ Check: – HCM is inserted properly. – Connections of the control box. ▶ Contact technical helpline. |
| Internal error | F1 | 259 | Control box or the HCM is defective. |
▶ Check: – HCM is inserted properly. – Connections of the control box. ▶ Contact technical helpline. |
| Internal error | F0 | 262 | Control box or the HCM is defective. |
▶ Check: – HCM is inserted properly. – Connections of the control box. ▶ Contact technical helpline. |
| Internal error | F1 | 263 | Control box or the HCM is defective. |
▶ Check: – HCM is inserted properly. – Connections of the control box. ▶ Contact technical helpline. |
| Internal error | F0 | 272 | Control box or the HCM is defective. |
▶ Check: – HCM is inserted properly. – Replace HCM if necessary. – Connections of the control box. ▶ Replace control box if necessary. |
| Internal error | F0 | 280 | Control box is defective. |
▶ Check: – HCM is inserted properly. – Connections of the control box. ▶ Replace control box if necessary. |
| Internal error | F0 | 290 | Control box is defective, (Analogue / Digital converter reference error). |
▶ Check: – HCM is inserted properly. – Connections of the burner control. ▶ Replace burner control if necessary. |
| Internal error | 328 | Internal error (Mains voltage / frequency may be inconsistent) | ▶ Check the voltage and frequency. | |
| 235 | Incompatible HCM software version |
Revised HCM software requires latest version of control box to operate correctly ▶ Replace the control box with the latest software. On the barcode label of the burner control the software version is indicated. |
||
| 356 | Low mains voltage, (the voltage may be interrupted or inconsistent). | ▶ Check mains voltage. | ||
| 360 | HCM invalid |
The inserted HCM does not correspond with the control box. HCM must be within the same appliance type. ▶ Check the correct HCM is fitted. – HCM identification number found in Technical data table. |
||
| A8 | 361 | HCM invalid |
The inserted HCM does not correspond with the control box or HMI type. ▶ Contact technical helpline. |
|
| 363 | Ionisation measuring fault | ▶ Check heat cell earth wire continuity. | ||
| 356 | Low mains voltage, (the voltage may be interrupted or inconsistent). | ▶ Check mains voltage. | ||
| CC | 800 | Outdoor sensor defect (available when accessory outdoor sensor is connected) |
▶ Check: – Sensor harness and connector. – Operation, replace if necessary. |
|
| DHW sensor fault | A7 | 808 | Domestic hot water sensor defect |
▶ Check: – Sensor harness and connector. – Operation, replace if necessary. |
| Pump error | A1 | 281 | Pump stuck or running dry |
▶ Check: – Primary system water pressure. – For air in the system. – Circulation within heating system. – Wiring and operation of the pump, replace if necessary. |
| Temperature fault | E9 | 224 | Flue or high limit thermostat activated (safety circuit) |
▶ Check: – Flue & high limit thermostat harness and connector. – Operation, replace if necessary. – Circulation within heating system. – Burner gasket for leakage of flue gasses, replace if necessary. – Heat exchanger for debris. – Air-gas ratio |
| Temperature fault | D4 | 341 | Primary flow temperatures rising too fast |
▶ Check: – Primary system water pressure. – For air in the system. – Circulation within heating system. – Wiring and operation of the pump and the respective sensors, replace if necessary. |