Vaillant Vantage H/W Stat

[AndyPRK]

I've just purchased a new house (well 11+ years old).

I appear to have a problem with the h/w stat.
Whenever the H/W timer is in a timed period the boiler is making a noise, even if it's had plenty of time to heat the water.

I have hot water ok.

Surly this is not correct. I assume a problem with the h/w stat ?

Is that the black dial ontop of the cylinder ?

It is just a 3 wire connection Com, No, Nc contacts ? Does anyone know the wire colours ?

Do the dial numbers equate to some temperature, if so, whats a good/normal setting ?

Anyone have any suggestions or common problems with this system.

Thanks very much for your help.

 

[gazdaz36]

Does the boiler make any noise on heating?

 

[AndyPRK]

will check. on heating only.

The heating was on when I first went into the house.

 

[The831Bunny]

The boiler thermostat will need to be on 70C or above to heat the Vantage correctly. Otherwise if it's say on 50C and the Vantage stat is on 5-6 the hot water thermostat will never be satisfied. This means the boiler runs all the time it's timed too. I can count on one hand the number of Vantage thermostats I've ever changed!

Set your boiler to 70C, your Vantage to 5 and your boiler will heat the cylinder in around 30 minutes and turn off. For added efficiency you can also time your hot water to turn on 1 hour before any heating comes on. This will ensure better operation of each function.

You may also need to replace the Pressure reducing valve soon as its badly leaking. So you know this is only a job for an engineer who is registered to work on unvented hot water systems.

Hope that helps

 

[Agile]

Yes, I expect thats the problem.

Its actually quite common because people dont realise that a differential of about 10 C is required for the boiler above the cylinder.

Not helped by the fact that the standard cylinder thermostat scale setting is totally impossible to accurately set.

Tony

 

[AndyPRK]

Heating does work on its own.

What does a yellow light on the boiler mean? Bet it's not good

 

[AndyPRK]

Seams to be on when it's running. I guess it's the pump I can hear on the first post.


How do I change the boil temP.

Thanks very much for your help.

 

[The831Bunny]

I'm assuming the boiler was put in along with the Vantage and its a Vaillant Its probably a Turbomax system boiler with a light grey fascia, in which case the yellow LED shows the burner is on.

The RADIATOR temperature dial (bottom knob) should be approx 3/4 of the way round (pointing to '3 O'Clock) thats approx 70C. The HOT WATER dial has NO function on your set up, and is used on European systems. You can ignore it and set it at minimum.

Possibly your boiler has a black fascia, in which case instructions are the same, but the knobs are green and the RADIATOR knob is the top one. Set this to 7. Theres also many yellow LEDs, just to confuse matters

 

[AndyPRK]

This is a pic of the boiler. I don't know the model.

 

[AndyPRK]

ok, so I will move the bottom dial to 3 o'clock and adjust the cyl stat to 5

Thanks for everyone's help.


I though I needed to use the buttons under the LCD display.

 

[AndyPRK]

ignore.....