Vaillant ECOTEC-PLUS-630 user manual

To repressurize your Vaillant Ecotec Plus 630 boiler, please follow these steps:
1. Locate the filling loop: This is a flexible silver hose usually attached to the bottom of your boiler. It has valves at both ends.
2. Ensure the boiler is turned off: Before starting the process, make sure your boiler is switched off.
3. Close the valves: Locate the two valves on the filling loop. Turn the valves to the closed position (perpendicular to the pipe).
4. Connect the filling loop: Attach both ends of the filling loop to the valves on the boiler. Ensure they are securely connected, but do not over-tighten.
5. Open the valves: Slowly open both valves on the filling loop, turning them in an anti-clockwise direction until they are fully open. This allows water to flow into the system.
6. Monitor the pressure gauge: Keep an eye on the pressure gauge on your boiler. It should start to rise as water enters the system.
7. Re-pressurize the boiler: Your boiler's ideal pressure range is typically between 1 and 1.5 bar. Once the pressure gauge reaches the desired level, close both valves on the filling loop by turning them in a clockwise direction.
8. Detach the filling loop: Disconnect both ends of the filling loop from the valves on the boiler. Again, make sure they are securely disconnected.
9. Check the pressure: Verify that the pressure gauge on your boiler remains within the recommended range. If the pressure drops again quickly, it may be a sign of a leak, and you should consult a qualified technician.
10. Turn on the boiler: Once the repressurization process is completed, switch on your boiler and check that it's functioning correctly.
Please note that these instructions are general guidelines, and it's always recommended to refer to your boiler's manual for specific instructions or contact a qualified heating engineer for assistance if needed.

The recommended temperature for hot water settings in a Vaillant Ecotec Plus boiler is typically between 55°C and 60°C for domestic use. This temperature range helps prevent scalding and minimizes the risk of Legionella bacteria growth in the water system. However, please note that temperature requirements may vary based on local regulations or specific user preferences. It is always advised to consult the manufacturer's manual or seek professional advice for accurate temperature settings for your specific model and installation.

There could be several reasons why your Vaillant Ecotec plus 630 is not igniting. Here are a few possibilities:
1. Gas supply: Check if there is a sufficient supply of gas to the boiler. Ensure that the gas supply valve is open and that there are no issues with the gas line.
2. Pilot light issue: If your boiler has a pilot light, check if it is lit. If not, you may need to relight it according to the manufacturer's instructions.
3. Ignition electrode or spark generator: The ignition electrode or spark generator may be faulty. These components are responsible for creating the spark that ignites the gas. They may need to be cleaned or replaced if damaged.
4. Blocked burner or condensate pipe: A blocked burner or condensate pipe can prevent the ignition of the boiler. Check if there is any debris or blockage in these areas and clean them if necessary.
5. Faulty control board or sensors: The control board or various sensors in the boiler may be malfunctioning. In this case, it is best to contact a qualified heating engineer or Vaillant technician to identify and fix the issue.
Always remember to follow safety precautions and consult a professional if you are unsure about troubleshooting your boiler.

The recommended pressure range for a Vaillant Ecotec Plus boiler is typically between 1 to 1.5 bar. It is important to note that this may vary slightly depending on the specific model of the boiler, so it is always best to consult the manufacturer's manual for the correct pressure range for your particular boiler.