Problem with Vaillant Boiler

Hi,

I have just moved to England last year and having problems with my vaillant boiler. All I know about the boiler is that it was purchased between 1994 - 1998. The boiler was working fine until last night and when I run hot water, nothing but cold water comes out. I noticed that when I reset the boiler, the temperature will rise to about 24 degrees but then drop again. The boiler is also showing, I believe, no pressure (the pressure bar is below 0) and there is no error code. I have never worked on a boiler and hate to say, I am not the DIY person, but tight on funds, I need to do it. Can someone please let me know what I need to do to fix the problem and hopefully, being a descriptive as possible.

Here is what I can tell you about the boiler. There are three lights and the green light is flashing. There is a solid green light to show it is turned on. There is no error code and the pressure is below 0.

Please, help me. I am suppose to be having guests on the 8th for 2 weeks and would hate for them to take cold showers too.

Thank you in advanced.

Andrew

First thing to do is re-pressurise.

ianniann

How do I re-pressurize? I have absolutely no knowledge on boilers (I never used a boiler till a year ago) and would be extremely grateful for all the help you can give.

Thank you

You'll have something called a filling loop possibly beneath the boiler, it will probably be a short silver flexible pipe with a black thumb turn tap at each end. Turn these tap on till the pressure reaches about 1bar. This is all speculation though unfortunatly, you might actually have something completely different!

To be honest if you unsure about the basics like this you should probably bite the bullet and get a pro in. You might end up doing more harm than good!

The exact model of the boiler would help. It should be on a small plate somewhere on the front of the boiler, possibly inside a small door or flap. The pattern of the flashing lights may well give you error information. In any case, trying to repressurise is safe enough for anyone to try. The filling loop should be easy to spot on a boiler this old. If you can't spot it then it may be internal to the boiler. We'd need to know the model to advise just where.

If you turn the taps and water flows (listen carefully) and the gauge doesn't move it could be broken. Make sure you shut the taps off. Otherwise, fill away to the one bar mark. What happens next tells a lot. If the boiler works, then that was your problem. Keep and eye on the pressure and see that it doesn't rise excessively. If it drops over the next few weeks then you have a small leak. If it drops quickly then check for a puddle somewhere! If it stays near one bar for months then you should be OK, although you may have to repressurise from time to time.

ianniann,

Thank you for your help. After you said that there should be a flap, I noticed these two screws and thought "this has to come down". It did.

The boiler is a Turbomax Plus 824E Combination Boiler

I have taken pictures to show what it looks like. Sorry for it not being the best, it is in a door right next to the fridge in the dark.

Please, if you can help, it would be great. I will do research to see if I can find out what to do on my end. I have no experience in doing this and this seems to be the best board on the net for this type of help.

Also, I was trying to find a manual for the 824E Combination Boiler? I can not find one online that is free. I am seeing that this model has a lot of issue due to no preasure and I hope that is the only problem.

The fill loop is built in on this model it's underneath toward the front on the rhs as u look at it it should have a lever in it if not use a screwdriver

U can c in your picture the 2 brass bits stickin down rhs if u look at them from underneath u will c the screwdriver slots turn them both u will hear water fill the unit an gauge will rise when it gets to 1 bar turn them both off

THANK YOU. That fixed the problem. I will keep an eye on this for the next month to ensure that this fixed the problem for good.