What to do if Baxi Boiler shows input voltage too low?
If your Baxi Boiler displays 'Input voltage too low', and the input voltage is less than 175V, check whether the power supply reductions are due to reasons other than the boiler. If so, contact the electricity provider.
What to do if Baxi DUO-TEC MAX+ Boiler has ignition failure (5 attempts)?
If your Baxi Boiler experiences an ignition failure after 5 attempts, ensure the gas valve is open and there's no air in the gas supply. Verify the gas supply pressure and check that the wire is uninterrupted and makes good contact with the flame sensing electrode and the ignition switch. You may also need to check the correct operation of the condensate drainage.
How to fix fumes outlet obstructed on Baxi DUO-TEC MAX+?
If your Baxi Boiler's fumes outlet is obstructed, check that the drainage pipe is free from obstructions and switch off the electric power supply to the boiler for a few seconds.
How to troubleshoot gas valve connection error on Baxi DUO-TEC MAX+?
If your Baxi Boiler displays a gas valve connection error, check the connections between the gas valve and the electronic board.
How to troubleshoot gas valve control error on Baxi Boiler?
If your Baxi Boiler displays a gas valve control error, check the connections between the gas valve and the electronic board. If necessary, replace the electronic board.
How to troubleshoot gas valve blocked error in Baxi DUO-TEC MAX+ Boiler?
If your Baxi Boiler shows a gas valve blocked error, check the gas supply pressure and inspect the integrity and position of the sensing and ignition electrodes and their wiring. If necessary, replace the electronic board.
What causes fumes NTC to trip in Baxi Boiler?
If the fumes NTC in your Baxi Boiler tripped due to overtemperature, check the heat exchange level of the water-fumes exchanger for insufficient circulation or scale presence. Also, check the fumes NTC probe.
How to fix fan fault in Baxi DUO-TEC MAX+?
If your Baxi Boiler displays a 'Fan fault', check the correct operation of the fan and ensure that the fan power supply wiring is connected to the electronic board.
What to do if the safety thermostat tripped due to overtemperature in Baxi DUO-TEC MAX+ Boiler?
If the safety thermostat in your Baxi Boiler trips due to overtemperature, which might be caused by a blocked pump or air in the heating circuit, you should check the pump operation by unscrewing the front cap and releasing the pump impeller with a screwdriver. Also, check the pump power input wiring. Inspect the limit thermostat for damage and replace it if necessary, and verify the continuity of the limit thermostat wiring.
Why is flame lost at ignition in Baxi Boiler?
If you're experiencing a loss of flame at ignition with your Baxi Boiler, check that the flame sensing electrode is in good condition and correctly positioned. Also, check the wire is uninterrupted and makes good contact with the flame sensing electrode and the ignition switch. Check for any recirculation of fumes.
Provides critical safety instructions regarding gas, fumes, and flammable materials.
Offers advice on optimizing boiler performance and reducing energy consumption through temperature settings.
Explains how to set the desired flow temperatures for central heating (CH) and domestic hot water (DHW).
Describes the different operating modes available for the boiler, such as DHW only or heating only.
Lists the items included in the boiler's packaging.
Provides technical drawings and specifications for boiler dimensions and connection points.
Details the installation of concentric flue ducts, including length limitations and bending rules.
Describes the installation of separate flue and air ducts using an accessory splitting kit.
Guides on how to connect a room thermostat to the boiler's terminal block.
Introduces optional accessories that can be connected, such as external sensors and zone systems.
Provides a detailed procedure for the first-time ignition and gas recognition process of the boiler.
Describes the function used to remove air from the heating circuit after installation or maintenance.
Explains how to activate the chimney sweep function for maximum heating power adjustment.
Details how to perform combustion tests and check CO₂ levels for optimal boiler operation.
Explains the pre-heat function that improves hot water comfort by providing instant hot water.
Outlines the process for converting the boiler from natural gas to LPG and vice-versa by an authorized service.
Details how to adjust the maximum heating power using parameter P13 to match system requirements.
Focuses on the hydraulic unit, including water treatment advice and filter cleaning.
Provides specific instructions and diagrams for correctly positioning the ignition and flame sensing electrodes.
Lists components that require performing the automatic calibration procedure after replacement.
General| Type | Combi |
|---|---|
| Mounting | Wall-mounted |
| ErP Heating | A |
| ErP Water | A |
| NOx Class | 5 |
| Output Range | 24kW |
| Weight | 36.5 kg |
| Fuel Type | Natural Gas |
| Hot Water Flow Rate | 16.4 l/min |
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