Baxi 18s Avanta Plus Combi User Guide

To adjust the water temperature, use the control knob located on the front panel of the boiler. Turn the knob clockwise to increase the temperature and counterclockwise to decrease it. Ensure that the boiler is on and the temperature display is active.
If your Baxi 18s Avanta Plus Combi boiler is not igniting, check the following: ensure the gas supply is on, confirm that the water pressure is within the recommended range (1-2 bar), reset the boiler using the reset button, and check for any displayed error codes. If the issue persists, contact a certified technician.
It is recommended to have your Baxi 18s Avanta Plus Combi boiler serviced annually by a qualified professional to ensure it operates efficiently and safely. Regular maintenance can help prevent unexpected breakdowns and extend the lifespan of the boiler.
To reset your Baxi 18s Avanta Plus Combi boiler, press the reset button on the control panel. Hold the button for a few seconds until the display resets. If the fault code reappears, consult the user manual for specific troubleshooting steps or contact a professional technician.
Unusual noises in your Baxi 18s Avanta Plus Combi boiler can be caused by air in the system, low water pressure, or a failing component such as the pump or fan. Bleed the radiators to remove air, check the pressure gauge, and if the noise persists, have a professional inspect the boiler.
If the central heating is not reaching the desired temperature, check the thermostat settings to ensure they are correct. Also, verify that the radiator valves are open and not blocked. If the issue continues, there might be a problem with the boiler’s pump or a blockage in the heating system.
The recommended pressure for the Baxi 18s Avanta Plus Combi boiler is between 1 and 2 bar. You can check the pressure using the pressure gauge on the boiler. If the pressure is too low or high, adjust it accordingly by following the instructions in the user manual.
To bleed a radiator, turn off the heating system and allow it to cool. Use a radiator key to turn the bleed valve counterclockwise until air escapes. Once water begins to flow steadily, close the valve. Check the boiler pressure afterward and adjust if necessary.
In case of a water leak from your Baxi 18s Avanta Plus Combi boiler, immediately turn off the water supply and the boiler. Contact a qualified technician to assess and repair the leak. Avoid using the boiler until it has been professionally inspected and repaired.
To improve the efficiency of your Baxi 18s Avanta Plus Combi boiler, ensure regular maintenance, bleed radiators to remove air pockets, insulate pipes, and keep the system clean. Additionally, consider upgrading the thermostat to a programmable one for better control over heating schedules.