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Trouble shooting

How to Reset a Baxi Boiler

When Baxi boiler troubleshooting, you may find that your boiler needs to be reset. If your boiler does need to be reset, these videos show you how, whether your boiler has a dedicated reset button, an ON/OFF/SELECTOR switch or a thermostat control knob.

If you are troubleshooting a Baxi boiler with a dedicated reset button:

  • In certain circumstances, your boiler may lock out. This is identified by the Red Lockout light constantly illuminated or flashing.
  • To reset the boiler, simply press the reset button until the red light goes away.
  • If your timer is calling for heat, the burner light will come on to indicate the boiler has fired up and is heating your system.
  • If lockout occurs frequently a fault is indicated and you should contact your installer or service engineer.

If you are troubleshooting a Baxi boiler that uses a boiler thermostat control knob to reset:

  • In certain circumstances, your boiler may lock out. This is identified by the Red Lockout light on or flashing.
  • To reset the boiler, turn the temperature control knob fully anticlockwise.
  • Hold until the red lockout light goes out, then turn the control knob back to the desired setting.
  • If your timer is calling for heat, the burner light will come on to indicate the boiler has fired up and is heating your system.
  • If lockout occurs frequently a fault is indicated and you should contact your installer or service engineer.

If you are troubleshooting a Baxi boiler that uses an ON/OFF/SELECTOR switch to reset:

  • Open the pull down panel to reveal the control.
  • If a fault occurs on your boiler, an error message or light (depending on your boiler model) may be shown on the fascia display. In the example shown, E133 is indicating a problem with either the gas supply, ignition/flame or a blocked condensate.
  • If your boiler uses a series of neon indicator lights (instead of an LED display) a lockout is shown through the flame failure light. On the 10-Neon display, the flame failure is the top left light.
  • The process of resetting your boiler is the same regardless of the fascia display.
  • To reset the boiler, turn the selector switch to the R (Reset) position. Hold for at least 5 seconds and release.
  • The fault code will be replaced with the boiler's current temperature.
  • At this point on a neon indicator boiler model, the flame failure light will stop flashing and will be replaced with the burner light.
  • After a few seconds, the burner (orange) light will illuminate, showing that the burner has fired. The temperature should now begin to rise.
  • If lockout occurs frequently a fault is indicated and you should contact your installer or service engineer.

Other fault codes when troubleshooting a Baxi boiler reset can include:

  • E110, E130 - which are displayed when overheat of the primary water or flue system has occurred.
  • E119 - which is displayed when the primary water pressure is less than 0.5 bar.

If your boiler displays any other fault codes when Baxi boiler troubleshooting, or in the event of a reset not being successful, you should make a note of the error code and contact your installer or service engineer for assistance. 

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