Valliant Boiler problems. Help me!

xcherrylozengex

Hi, i am a young female in my first home and pretty useless when it comes to things like this, so i'd be so grateful for any feedback!
For the past month or so, i go to use the hot water and i only get freezing cold. So i got to the boiler (valiant) and and red light is on in the middle panel, which i believe signals that the flame has gone out? So i press the button below the light to 're spark', and i can hear that there is something happening, and then about a minute later, it cutsout again and the red light comes on again. This is repeated 5/6 times until i can get hot water.

Help me from having such cold showers and running up and down the stairs a million times a day!

Lauren

dounome

If what you are saying is that the pilot light is not staying on then i had to get an engineer to fit a new part to my boiler last year when it was doing the same thing, was on a British Gas homecare agreement so didnt cost me anything, therefore dont know what the cost would be.

Canucklehead

Good afternoon: Which model do you have and do you have the manual at hand?...if not visit https://www.vaillant.co.uk to download the manual...it should have a trouble shooting section (unless your Vaillant is ancient and no longer listed on the site). Post your findings here and I'll have my OH, Corgi Guy, take a gander. If you post in the DIY forum you might get more help.

OTH

Canucklehead

Snow_Dog

First thing I would suspect would be the thermocouple, this is a little temperature sensor device which sits in the pilot light flame and tells the boiler if the flame is on.

If the thermocouple is on its way out then the temperature signal being sent back to the boiler maybe borderline (the boiler will then think the flame has gone out and shutdown).

The fact that it takes 5 or 6 attempts to get it to stay consistently on could mean that it takes this long for the thermocouple to start giving a good output.

Changing a thermocouple is a relatively quick job for a heating engineer, not sure about vaillant but a lot use standard thermocouples which means he may have one to hand anyway. No more than 1/2 hour to 1 hour work.