| Fault | Fix |
|---|---|
| faulty thermocouple | check connections / replace thermocouple |
| faulty gas valve (sticking armature, blocked or damaged) | replace solenoid / gas valve |
| faulty ignition electrodes / leads | inspect gap(s) / condition |
| faulty printed circuit board | replace circuit board |
| blocked injector | check injector |
| gas at meter or boiler off | check isolation valves |
| fuse blown (consumer unit) | check consumer unit fuses |
| fuse blown (isolation switch) | check and replace fuse |
| power cut | check boilers programme and reset if required |
| thermostat not working | check thermostat sender and controls |
| low water pressure | check water pressure |
Common issues with Boiler Ignition systems
- Low water pressure
- Gas supply issues
- Lack of power (electricity to the boiler)
Boiler Fault codes are generally displayed when a boiler fails to ignite. Check the manufacturers boiler manuals for each boiler and boiler fault codes in this system.
If there are no obvious signs of a fault, you can try resetting the boiler according the manufacturer’s instructions. If the boiler continues to not ignite correctly you should call a Gas Safe heating engineer to determine what the problem is.
Find A Gas Safe Heating EngineerOther Issues to check
- Noisy Fan
- Noisy Pump
- Noisy Hot Water Flow Switches
- Noisy Solenoid
- Burner Not Igniting
- Boiler Fan Problems
- Boiler Shuts Down
- Explosive Ignition
- Blocked Plate Exchanger