How can we help?

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.

This boiler was first manufactured from 1988 to 1995 and this particular model is no longer being produced.

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 aboveor  by browsing through our homepage here.  As this is a legacy boiler not all our controls, including eBUS controls, will be compatible with this product. 

Your boiler should be pressurised to between 1 to 1.5 bar. 

You can find help in topping up your water pressure by clicking here. You can also find more information by downloading and checking the user manual below as well as checking our Youtube Channel.

This appliance does not come with the warmstart facility.

The central heating temperature can be adjusted by pressing the central heating temperature knob. For more information, see the Installation Manual below.

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.

If you are a suitably qualified Gas Safe registered Engineer you can access our comprehensive technical help section by clicking here.