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Your Question:
ecoTEC plus 800 series (2012 - 2015)
The Vaillant ecoTEC 800 series boilers are high efficiency boilers that are not currently in production (although there is a refreshed model). Please check the frequently answered questions below for any help you may need. You can also click here to visit the appliance homepage.
FAQs
What kind of appliance is it?
This appliance is a Combination boiler (combi). This means it heats water when you draw a tap. It doesn't need a water storage tank or a cylinder because the boiler's connected directly to the water mains, heating water as its needed.
When was the boiler manufactured?
This boiler was first manufactured from 2012 to 2015 and this particular model is no longer being produced. A later model has a modulating pump and is ErP rated. Please check the Vaillant menu for more information.
Is there a clock or roomstat available?
A broad range of Vaillant thermostats and clocks are available. You can find technical help on these by typing in your model into the question bar above or by browsing through our homepage
here.
What is the recommended water pressure?
Your boiler should be pressurised to between 1 to 1.5 bar.
How do I top up the water pressure?
You can find help in topping up your pressure by typing in your boiler model and "low pressure" into the question bar above as well as clicking
here. You can also find more information by checking the user manual as well as checking our
Youtube Channel. This image may also help:
How do I adjust the Central heating temperature?
My boiler has a fault and I need some help?
Your boiler should work reliably for a number of years if it is serviced annually, however occasionally faults can occur. In a lot of cases faults can be temporary and if the boiler is reset it will start working again. You can find out how to do this by selecting the user manual below (under available literature). We have created a special troubleshooting guide which you can access by
clicking here which may help you resolve the issue. If you continue to experience problems please
click here for contact information.
I am an Engineer. I would like technical information. Where can I get it from?
If you are a suitably qualified Gas Safe registered Engineer you can access our comprehensive technical help section by
clicking here.
Available Literature
Combi Installation & Servicing Manual User Manual Flue Guide
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