R
rramirezSep 8, 2025
What to check if my Baxi DUO-TEC COMPACT+ Boiler displays 'Internal board error'?
- AaadamsSep 8, 2025
If your Baxi Boiler displays an internal board error, replace the electronic board.
To Next PageTo Next PageWhat to check if my Baxi DUO-TEC COMPACT+ Boiler displays 'Internal board error'?
If your Baxi Boiler displays an internal board error, replace the electronic board.
What to do if my Baxi DUO-TEC COMPACT+ has no flame?
If your Baxi Boiler has no flame, 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.
What causes a Baxi Boiler to lose flame at ignition?
Loss of flame at ignition in your Baxi Boiler can be caused by a faulty or incorrectly positioned flame sensing electrode. Check that the electrode is in good condition and correctly positioned. Ensure the wire is uninterrupted and makes good contact with the flame sensing electrode and the ignition switch. Also, check for any recirculation of fumes.
What to do if the safety thermostat tripped due to overtemperature in my Baxi DUO-TEC COMPACT+ Boiler?
If the safety thermostat in your Baxi Boiler has tripped due to overtemperature, check the pump operation by unscrewing the front cap and releasing the pump impeller with a screwdriver. Verify the pump power input wiring. Inspect the limit thermostat for damage and replace if necessary. Also, check the continuity of the limit thermostat wiring.
How to troubleshoot a Baxi DUO-TEC COMPACT+ fan fault?
To troubleshoot a fan fault in your Baxi Boiler, verify the fan is operating correctly. Also, check that the fan power supply wiring is connected to the electronic board.
What to do if my Baxi DUO-TEC COMPACT+ Boiler shows a gas valve control error?
If your Baxi Boiler displays a gas valve control error, check the connections between the gas valve and the electronic board. If the issue persists, you may need to replace the electronic board.
What to check if my Baxi DUO-TEC COMPACT+ Boiler displays 'Electronic board not calibrated'?
To solve the problem, activate the automatic calibration function described in the spare parts instructions sheet for your Baxi Boiler.
What to do if my Baxi Boiler displays 'Incorrect power supply frequency'?
If your Baxi Boiler displays 'Incorrect power supply frequency', check whether the incorrect electric power supply frequency is due to causes outside the boiler. If so, contact the power supply company.
How to address fumes fault during calibration in Baxi DUO-TEC COMPACT+?
To address a fumes fault during calibration of your Baxi Boiler, check for any recirculation of fumes.
How to resolve a fault in system filling phase for my Baxi DUO-TEC COMPACT+?
To resolve a fault during the filling phase of your Baxi Boiler, check the filling tap.
General| Model | DUO-TEC COMPACT+ |
|---|---|
| Efficiency Rating | A |
| Mounting | Wall-mounted |
| Output | 24 kW, 28 kW |
| Gas Type | Natural gas or LPG |
| Weight | 32 kg |
| Warranty | 7 years (when installed by a Baxi approved installer) |
Symbol indicating a general caution or risk of damage.
Symbol indicating danger of burns from hot surfaces.
Symbol indicating danger from live electrical components.
Symbol indicating potential risk of freezing.
Symbol highlighting information requiring careful attention.
Symbol indicating actions that are forbidden.
Immediate actions to take in case of a gas leak.
Immediate actions to take in case of combustion fume detection.
Guidelines for storing flammable materials near the boiler.
General safety measures before performing maintenance.
Measures for domestic hot water and heating circuits before installation.
Essential checks and requirements before the first boiler operation.
Optimizing temperature settings for heating efficiency.
Tips for reducing energy consumption for hot water.
Setting the desired flow temperatures for heating and DHW.
Selecting between DHW, Heating, or combined modes.
Information on converting the boiler for different gas types.
Understanding and clearing error codes displayed by the boiler.
Procedure for turning off the boiler while maintaining anti-freeze.
Scheduled checks and tasks for boiler efficiency and safety.
Specific cautions regarding pump usage and solar panel integration.
Details on physical size and connection points for utilities.
Guidelines for installing coaxial flue and air intake systems.
Instructions for installing separate flue and air intake systems.
Wiring instructions for a room thermostat to control heating.
Connecting and configuring an external temperature sensor for climate control.
Wiring and configuration for connecting an external DHW storage boiler.
Setting up the boiler to manage multi-zone heating systems.
Step-by-step guide for the first startup and gas recognition.
Function to remove air from the heating circuit after installation.
Mode to maximize heating power for cleaning purposes.
Procedure for testing and verifying flue gas composition.
Function to fine-tune CO2 levels for optimal combustion.
Information on converting the boiler between different gas types.
Reducing the boiler's maximum output to match system requirements.
Detailed list of fault codes and corresponding troubleshooting steps.
Performance curves for the heating system pump.
Specific maintenance for the hydraulic components.
Procedure for cleaning the DHW and CH system filters.
Steps for removing and servicing the heat exchanger.
Procedure for automatic system calibration after part replacement.
