Error codes

Sometimes your boiler may show an error code. These help to determine if there is a problem with the boiler, gas supply or heating system and how to resolve it. Some problems are easy to fix and you can carry out a few simple steps to do it yourself, while others need to be sorted out by a Gas Safe registered engineer.

The error code will appear on the facia display as either two or three numbers, preceded by the letter ‘E’. For example, code E133 will be displayed by 'E1' alternating with '33'. E50 is shown as 'E' then '50'.

Below you will find a list of the most common error codes, and the action you need to take. If the error code persists or does not indicate an issue you can fix yourself, please call your Gas Safe registered installer.

You can also call Baxi Customer Support [link] on 0344 871 1570 and we will arrange for one of our engineers to visit.

Code Possible fault User action
E20, E28, E50 and E160 Faulty components You should make a note of the displayed error code and contact your installer or Baxi Customer Support
E110
 Displayed overheat of the primary water or flue system has occurred               Turn the selector switch to the reset position and hold for at least 5 seconds. If the boiler does not relight, or the code is displayed regularly contact your installer or Baxi Customer Support.
E119
 Displayed when the primary water pressure is less than 0.5 bar 
 You can repressurise the boiler yourself. You can watch a video to find out how to do it here
E133 Indicates that the gas supply has been interrupted, ignition has failed or the flame has not been detected
 Ensure that the gas supply has not been turned off, and turn the selector switch to the reset position and hold for at least 5 seconds. If the boiler does not relight, or the code is displayed . Regularly contact your installer or Baxi Customer Support.
E133 Can also display in the winter if the condensate pipe of your boiler has frozen The boiler will switch off to protect itself. You can find out how to thaw your condensate pipe by watching this video
E168
 Could mean that your boiler has detected a problem but can't work out exactly what it is.  This could be because the boiler has been reset after developing a fault or because there has been an external issue, such as a fault with the electrical supply              The boiler might have been displaying a different error code prior to resetting, so it is useful to make a note of any error codes you see as this will help your installer identify the issue.  Call your installer or Baxi Customer Support if E168 persists.