What to do if pressure is too low in Baxi DUO-TEC COMPACT?
If the pressure in your Baxi Boiler's hydraulic circuit is too low, and the CH circuit pressure is less than 0.5 bar, perform filling as described in the FILLING THE SYSTEM section. Also, check that the hydraulic pressure switch works correctly.
Why does my Baxi Boiler have ignition failure?
If your Baxi Boiler fails to ignite after 5 attempts, ensure the gas valve is open and there's no air in the gas supply circuit. 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 should also check the correct operation of the condensate drainage. For further assistance, refer to the actions indicated in E92.
Why does my Baxi DUO-TEC COMPACT Boiler lose flame at ignition?
If your Baxi Boiler experiences a loss of flame at ignition, check that the flame sensing electrode is in good condition and correctly positioned (refer to the ANNUAL SERVICING - POSITIONING THE ELECTRODES section). 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 safety thermostat tripped in Baxi DUO-TEC COMPACT Boiler?
If the safety thermostat in your Baxi Boiler has tripped due to overtemperature, which may be caused by a blocked pump or air in the heating circuit, check the pump operation by unscrewing the front cap and releasing the pump impeller with a screwdriver. Also, check the pump power input wiring, ensure the limit thermostat is undamaged (replace if necessary), and verify the continuity of the limit thermostat wiring.
How to fix fumes outlet obstruction in Baxi Boiler?
If you suspect the fumes outlet of your Baxi Boiler is obstructed, check that the drainage pipe is free from any blockages. Additionally, switch off the electric power supply to the boiler for a few seconds.
How to troubleshoot fan fault in Baxi DUO-TEC COMPACT?
To address a fan fault in your Baxi Boiler, check the fan's operation. Also, check that the fan power supply wiring is properly connected to the electronic board.
How to fix NTC flow sensor faulty in Baxi Boiler?
If the NTC flow sensor in your Baxi Boiler is faulty, check the sensor. Verify the continuity of the probe wiring and make sure the wiring has not shorted.
What to do if fumes NTC tripped in Baxi Boiler?
If the Fumes NTC in your Baxi Boiler tripped due to overtemperature, examine the heat exchange level of the water-fumes exchanger for possible insufficient circulation or presence of scale. Also, check the fumes NTC probe.
How to troubleshoot gas valve control error in Baxi DUO-TEC COMPACT?
If there's a gas valve control error in your Baxi Boiler, check the connections between the gas valve and the electronic board. If necessary, replace the electronic board.
What causes communication problem in Baxi Boiler?
If you are experiencing a communication problem between the boiler board and the control unit in your Baxi Boiler, which may be due to a short circuit on the wiring, check the wiring between the Ambient Unit and the electronic board or RF link.
General| Model | DUO-TEC COMPACT |
|---|---|
| Category | Boiler |
| Type | Combi |
| Mounting | Wall-mounted |
| Gas Type | Natural Gas / LPG |
| NOx Class | 5 |
| Output | 24 kW |
| Dimensions | 700 x 400 x 295 mm |
| Weight | 32 kg |
| Modulation | 1:7 |
Explains various hazard, warning, and prohibition symbols used throughout the manual.
Instructions for handling gas leaks and combustion fumes, including immediate actions and contacting service.
Precautions regarding flammable materials and the essential safety step of powering off before cleaning.
Guidelines for DHW circuit water quality and heating circuit cleaning to ensure proper operation and prevent damage.
Critical checks required before initial boiler lighting, ensuring compliance and proper setup for warranty.
Advice on adjusting heating water temperature and room temperature for energy efficiency.
Tips for saving energy when heating domestic hot water, focusing on temperature settings.
Guide to setting the desired flow temperatures for central heating and domestic hot water.
Instructions on how to enable and choose between DHW, Heating & DHW, or Heating Only operating modes.
Explanation of the boiler's built-in anti-freeze protection for heating systems during winter.
States that gas conversion (Natural Gas to LPG or vice-versa) must be performed by an authorized service center.
How to identify faults via display codes and the procedure for resetting the boiler after a fault occurs.
Instructions on how to access and view various operational parameters and diagnostic information from the boiler.
Correct method to switch off the boiler using the main switch, noting anti-freeze function remains active.
Guidance on checking system pressure and safely filling the heating system with water.
Emphasizes the need for annual checks by an authorized service center to ensure efficiency and safety.
Precautions for low temperatures, system design, and packaging safety before installation.
Steps for physically mounting the boiler, connecting water, gas, and flue systems, and fitting taps.
Details on installing coaxial flue ducts, including bend limitations and securing methods for optimal performance.
Guidance on using splitting kits for separate inlet and outlet ducts, including bend limitations and system adaptation.
Step-by-step instructions for wiring a room thermostat to the boiler's terminal block M1 for temperature control.
How to connect an external sensor and set the 'Kt' climate curve for automatic heating temperature adjustment.
Instructions for electrically connecting an external storage boiler, including sensor placement and parameter settings.
Guidance on using a programmable relay board to manage zone heating systems with valves or thermostats.
Step-by-step guide for the first boiler ignition, including system venting and gas type identification.
How to use the function to remove air from the heating circuit after installation or maintenance.
Procedure to activate maximum heating power for boiler maintenance or testing.
Table of CO2/O2 values for natural gas (G20) and LPG (G31) at different power levels for proper operation.
Procedure to adjust the CO2 percentage for optimal combustion at various operating powers.
Information on the gas valve, noting it has electronic auto-adaptation and requires no mechanical adjustment.
Details on converting between Natural Gas and LPG, requiring authorized service and parameter adjustments.
Guide to accessing and modifying various boiler parameters using the control panel, with a detailed parameter table.
Table showing how to adjust parameter P13 (percentage) to match the desired maximum heating output in kW for different boiler models.
Comprehensive list of fault codes displayed by the boiler and the recommended service actions or checks for each.
Details on specific fault codes related to ignition, gas valve, fan, power supply, and safety thermostat interventions.
Information on the number of reset attempts allowed and general notes regarding fault display and intervention.
Description of safety devices like limit thermostat, NTC fumes sensor, flame ionisation detector, and hydraulic pressure switch.
Information on the pump's head and flow rate characteristics, including an automatic air valve feature.
Reference to diagrams for correct positioning of ignition and flame sensing electrodes for reliable operation.
Comprehensive list of checks for optimal boiler efficiency and safety, including gaskets, electrodes, burner, fan, and flue.
Procedures for cleaning filters in the DHW and CH circuits, and maintenance of the hydraulic unit.
Step-by-step guide for safely removing and cleaning the stainless steel plate-type water-water heat exchanger.
List of components that require replacement and the subsequent automatic calibration procedure.
Detailed steps for performing the automatic calibration after component replacement to ensure optimal combustion.
Detailed technical data including heat input/output, efficiency, pressure limits, temperature ranges, and consumption figures.
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