To Next PageTo Next PageWhat does it mean if my Vaillant ecoTEC plus 615 shows eBUS undervoltage?
An eBUS undervoltage indication means there could be a short circuit on the eBUS, an overload on the eBUS, or two power sources on the eBUS with different polarity. Check the eBUS connections and power sources.
What to do if the heating system of my Vaillant Boiler is not full of water?
If your Vaillant Boiler's heating system isn't full of water or charged correctly, make sure the heating system is full of water and charged to between 1 and 1.5 bar. If it's not, refill and vent the system.
What to do if my Vaillant ecoTEC plus 615 is dry firing?
If your Vaillant Boiler is dry firing, it indicates there may be too little water in the appliance, a defective water shortage switch, a defective cable to the pump or water shortage switch, a blocked or defective pump, or the pump output is too low. Ensure adequate water supply and check the water shortage switch and pump.
What to do if my Vaillant Boiler shows flow and/or return NTC fault?
If there is a flow and/or return NTC fault, the flow and/or return NTC is defective (tolerances too big). Replace the flow and/or return NTC.
What to do if the gas supply to my Vaillant Boiler is off?
If the gas supply to your Vaillant Boiler is off or not correctly purged, check that the gas supply to the boiler is on, that it has been correctly purged, and that an inlet pressure of 20 mbar is available at the gas valve.
How to fix Return NTC short circuit in Vaillant Boiler?
A Return NTC short circuit can be caused by a defective NTC, a short circuit in the cable harness, or a cable/casing shortcut. Replace the NTC and inspect the cable harness.
What causes a short circuit in the tank sensor of my Vaillant Boiler?
A short circuit in the tank sensor of your Vaillant Boiler can be caused by a defective NTC, an earth leak/short circuit in the cable loom, or a damp plug connection. Inspect and replace the NTC or repair damp connections.
What does it mean 'No valid DSN in AI and/or BMU' in Vaillant Boiler?
If your Vaillant Boiler displays 'No valid DSN in AI and/or BMU', it indicates a spare part failure where the AI and motherboard were interchanged at the same time. Replace faulty components to resolve DSN issue.
What to do if my Vaillant ecoTEC plus 615 Boiler has no communication to mainboard?
If there is no communication to the mainboard, there might be a connection error between the display and the mainboard. Check the connections to the mainboard.
What to do if there is a short circuit in the flow-NTC of my Vaillant ecoTEC plus 615?
If there is a short circuit in the flow-NTC of your Vaillant Boiler, it could be due to the NTC plug shorted to the casing or a defective NTC. Inspect and replace the NTC if defective.
General| Model | ecoTEC plus 615 |
|---|---|
| Category | Boiler |
| Output | 15 kW |
| Dimensions (H x W x D) | 720 x 440 x 338 mm |
| Fuel Type | Natural Gas |
| Mounting | Wall-mounted |
| Max. Working Pressure | 3 bar |
| NOx Emissions Class | 5 |
| Flue Options | Horizontal and Vertical |
| Heating Flow Temperature Range | 30°C to 80°C |
| Efficiency | 94% ErP |
Explains manual structure, safety symbols, and applicable documents for clarity.
Details CE marking compliance with EU directives for gas appliances and EMC.
Comprehensive technical specifications including heat output, dimensions, gas/water pressures, and electrical data.
Visual representation of the boiler's physical dimensions and component layout.
Guidelines for selecting an appropriate installation location considering clearances and environmental factors.
Procedures for ensuring a safe and compliant gas supply connection to the boiler.
Requirements for safe and compliant electrical connection, including fused supply and isolation.
Specifies essential clearances around the boiler for installation, operation, and servicing.
Detailed instructions for performing a safe and leak-free gas connection to the appliance.
Step-by-step guide for wiring the boiler, including main supply and control connections.
Procedures for filling and venting the heating system, ensuring correct pressure and water flow.
Steps to verify gas inlet pressure and rate, crucial for safe and efficient boiler operation.
Essential checks to perform after installation to ensure the boiler operates correctly.
Guidance on instructing the user on safe operation, controls, and maintenance.
Recommendations for preliminary checks before performing any servicing tasks.
Overview of regular maintenance tasks required for optimal boiler performance and longevity.
Detailed instructions for the removal, servicing, and refitting of the burner module.
A systematic guide to diagnose and resolve issues before referring to fault codes.
Explanation of various status codes displayed by the boiler, indicating operational states.
Details on accessing and interpreting diagnostic codes for advanced fault analysis.
Critical safety precautions to be followed before undertaking any component replacement.
Step-by-step guide for the safe removal and replacement of the burner.
Procedures for replacing the boiler's electronic control board and display unit.
