kitch0978 thank you sooooooooo much - we took the exchanger out and descaled it - it was full up! I've just run a steaming hot huge bath! Thanks again - you are great!
Yes as I said the heating works, hot water does start, yes the green light comes on, the red light comes on the boiler lockout light after about 30 seconds.
I'm sorry for those of you who have to be so rude for no reason. I am genuinely wanting to fix a very annoying problem.
I can't afford to pay up to £100 an hour for someone to look around (up to £300 I've been quoted to diagnose!). So I'm very sorry if I'm doing someone out of a job but I...
I just don't get why someone can't suggest anything without trying to get me to pay for a boiler specialist? I can do almost any repairs myself if I know what I'm looking for.
Thanks but no thanks - way too expensive! Will just have to wait till someone here who knows what's wrong can tell me so I can replace the part myself.
Sorry I didn't get an email to tell me anyone had replied, so I've just seen this at work.
Can't give model at the moment as I can't check it, but the problem was the pressure going down to zero constantly.
We have now put in a new PRV and it seems to be working much better although...
Can anyone suggest what the problem is if my combi boiler fires up for hot water and after about 30 seconds it clicks off, the red light comes on and the water goes cold? You can get boiling water but only for a few seconds.
Help!
Having read other topics on this subject we are fairly sure that our PRV needs replacing. However will we also need to replace the expansion vessel or could it just be the PRV?
If we need to replace the expansion vessel, do we need to buy a Glow Worm one or not? Also, can you add the new...