The most popular errors for the Glow Worm are the codes F1, F4, F28 and F29. If your Glow Worm boiler is displaying any of these error codes then you have a problem with your condensate pipe.
This error appears when your pipe is frozen, which can happen during the cold months as it runs outdoors.
You can fix this issue yourself if you feel confident enough, otherwise call for one of our boiler repair engineers to come and fix the issue for you.
Get your Glow Worm boiler serviced by our boiler service engineers.
|Fault/Error Code||Possible Cause|
|No Display||Failure - Fault with PCB.|
|E10||Sensor fault - Check outdoor sensor. - Outdoor sensor fault. Boiler Engineer visit required.|
|E20||Sensor fault - Central Heating sensor error. - Central heating thermistor sensor. Boiler Engineer visit required.|