What to do if my Vaillant Boiler is overheating?
If the overheating protection on the primary heat exchanger is triggered, it could be due to a defective cable or cable connection of the fuse in the primary heat exchanger, or the primary heat exchanger itself being defective. Inspect primary heat exchanger connections.
What to do if my Vaillant Boiler flame goes off during operation?
If the flame goes off during operation and subsequent ignition attempts fail, it could be due to a temporarily stopped gas supply or faulty earthing of the appliance. Check the gas supply and earth connection.
General| Model | ecoTEC plus |
|---|---|
| Category | Boiler |
| Type | Condensing |
| Dimensions (H x W x D) | 720mm x 440mm x 338mm |
| ErP Rating | A |
| Mounting | Wall-mounted |
| Output Range | 12kW to 38kW |
| Fuel Type | Natural Gas |
| Domestic Hot Water Output | 38kW |
| Flow Rate | 15.9 l/min |
| NOx Emissions | Class 5 |
| Efficiency | 94% (SAP 2009) |
Explains the classification of warnings by severity (Danger, Warning, Caution) and the structure of warning messages.
Defines the proper and improper uses of the Vaillant ecoTEC plus boiler and the manufacturer's liability.
Covers installation, gas/flue gas safety, preventing scalding, material damage, and frost damage.
Introduces the control elements of the ecoTEC plus and the Digital Information and Analysis System (DIA).
Instructions for opening/closing isolator devices and switching the boiler on, with frost protection warnings.
Guidance on checking the heating system's fill level and the procedure for filling it, including water quality advice.
Guidance on temporarily shutting down the boiler and activating frost protection, including draining the system.
Explains how fault codes and plain text messages are displayed and what to do when they appear.
Provides a table for self-checking common problems like no hot water, heating failure, or low system pressure.
Addresses resolving ignition faults and recognizing maintenance messages, advising professional help when needed.
Emphasizes the importance of annual servicing by a qualified professional for optimal performance and longevity.
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