Worcester Bosch Boiler Fault Codes
Fault / error code on your Worcester boiler? Enter the code below and find out what the fault means. If you need a fast boiler repair, get in touch with Gas Safe today on 0117 964 0078.
Worcester Boiler Fault Codes
| Code | Meaning |
|---|---|
| 9A | Boiler has been fitted with incorrect Heat Control Module (HTM). |
| 9U | Faulty or not properly connected code plug. |
| B7 | Control board needs replacing. |
| C6 | System is running too fast or slow. |
| C7 | Fan is not running or the airflow is blocked. |
| D1 | Sensor has become wet, damaged or has disconnected. Boiler will block for 300 seconds. |
| D1 | Boiler is overheating. |
| E2 | Flow sensor has shorted, become damaged or has disconnected. |
| E5 | Primary flow sensor has overheated. |
| E9 | Main heat exchanger has overheated. |
| E9 | Max temperature sensor has failed or can't be recognised. |
| EA | Flue gas thermostat has overheated. |
| EA | Boiler has failed to ignite 4 times. Boiler will wait 30 seconds before another attempt is made. |
| EA | Flame has been extinguished due to moisture in sump, blocked sump or wind in flue. |
| EA | Gas valve coil has disconnected. |
| EA | Flame has not extinguished within 4 seconds of ignition. |
| EA | Pump is not detecting water. |
Contact Us
Unit 4, Bristol Vale Trading Estate,
Bristol, BS3 5RJ
0117 964 0078
GAS SAFE is the trading name of Gas Safe Bristol Limited. Registration Number 06128525.
Registered in England & Wales. Registered Office in: Unit 4, Bristol Vale Trading Estate, Bristol, BS3 5RJ
Our Gas Safe Register number is 201369
