Baxi 124 Combi User Guide

To adjust the water temperature on the Baxi 124 Combi, use the control knob on the front panel. Turn the knob clockwise to increase the temperature and counterclockwise to decrease it. Ensure the boiler is on and the display shows the current temperature setting.
First, check the gas supply to ensure it is turned on. Then, reset the boiler by pressing the reset button. If the problem persists, inspect the pressure gauge to ensure it is between 1 and 2 bar. If the issue continues, contact a qualified technician.
It is recommended to service your Baxi 124 Combi boiler annually. Regular maintenance helps ensure efficiency, safety, and longevity of the boiler. Schedule the service with a certified engineer.
Fault code E119 indicates low water pressure. Check the pressure gauge on the boiler; if it's below 1 bar, you may need to repressurize the system. Follow the manual's instructions to safely increase the pressure, and consult a professional if you're unsure.
Yes, the Baxi 124 Combi boiler is compatible with most smart thermostats. Ensure the thermostat is correctly installed and configured according to the manufacturer's instructions for optimal performance.
A whistling noise could be due to trapped air in the system or a build-up of limescale. Bleed the radiators to remove any air, and consider using a descaling agent if you live in a hard water area. If the noise persists, contact a heating engineer.
If your boiler is leaking, turn off the water supply and power to the boiler. Check for visible signs of leaks from pipes or fittings. Contact a professional technician to diagnose and fix the issue as soon as possible.
To reset the Baxi 124 Combi boiler, locate the reset button on the control panel. Press and hold the button for a few seconds until the boiler restarts. If the fault code reappears, consult the manual or a professional technician for further assistance.
If the heating is not working but hot water is available, check the thermostat settings and ensure it is calling for heat. Also, verify that the radiator valves are open. If the issue persists, there may be a problem with the diverter valve or pump, requiring professional inspection.
To increase the pressure, locate the filling loop, usually underneath the boiler. Open the valves on the filling loop slowly until the pressure gauge reads between 1 and 2 bar. Close the valves and check for any leaks. If unsure, consult the user manual or a professional engineer.