I realise that this message is only going to relevant to few mumsnetters who either are heating engineers or who have a partner who is a heating engineer but here goes......
Back in March/April we had a problem with our boiler losing pressure. The screen shoing the number of bar would start flashing about 2.0 right down to 0.6, the red light would come on and we'd have no hot water or heating. We got the problem fixed by a local plumber recommended to us. It has been fine ever since. Or so we thought. We put the heating on for the first time this weekend and the problem has returned.
Now that would tell me that there could be a leak in one of the radiators yes?? or no? When the fault occurs we go into the airing cupboard and turn a key that puts more water into the system. I can't find a puddle anywhere indicating a leak so far although I am about to go and do some more checking.
Any ideas please very gratefully received. The call out charge for the boiler company is £250 but the fault might not be with the boiler!!
It's difficult to tell if water has been coming out of the pipe because it's been raining here most of the day. The forecast for tomorrow and the rest of the week is quite good though so I'll look agian in the morning. I put my finger inside it and a drop came out but are you looking for more than a tiny drop? If it's dry tomorrow will I be looking for a puddle on the floor or should I put some kitchen roll around the pipe to see if that is damp?
I'll get DH to sort the rads - he (being a typical man and not liking to be told what to do) is questioning why air in the rads would affect the water pressure??? But he is a publisher, not a heating engineer so . Thanks again LM and LM's DH.
we are having the same problem the pressure stays when you just use hot water but if you have heating on then when its switched off pressure drops to zero.lilymolly does this mean air in radiators they are all getting hot as if its a different problem.sorry mckenzie i've hijacked your thread.
Have you done any DIY recently? We had the same problem and it took us a year to realise that DH (in his infinate wisdom) had screwed through a central heating pipe whilst putting up a kitchen cupboard and of course the screw caused a slow leak, virtually unnoticeable. Different story when he took the screw out though......
or it could be a slow leak inside the boiler itself, as my parents had.
mckenzie LM DP here- water from pipe outside will be a brownish colour so you will be able to tell this from rain water. Pressurise the boiler back up tonight with the heating switched off then turn the heating on and wait for the boiler to get up to temperature, then if it is a problem with the boiler the water will shoot out of the pressure pipe outside- if not it may just mean that the raditators need venting/bleeding.
Mashedbanana check the pipe outside the same way as described to mckenzie
hiya LM's DP. DH has bled the rads (or so he says ). I've just turned the heated off completely and pressurised the boiler to the correct level. Do you want me to now turn the heating back on and watch the tap or should i wiat until the morning?
PS. £25 per hour is fine by me . Name your chosen charity. Thank you very much.
sorry to jump in on this, we are having problems with our central heating, think they need to be balanced????, but we do have water coming out of the pipe from the boiler outside, does this mean something?
We pressurised to 1.5 which is where the guide mark is (we assume it's a guide mark). The heating has come on, the guage has gone up and the boiler is showing 45, 46, 47 and rising. Nothing out of the outside pipe so far. Dh said that he thinks we would know if it was leaking dirty water as it's very close to the wall and we would see the marks on the bricks????
it's settled on 2 and stayed there. The red line is at 3. Nothing much happening at all, which is of course always the way!!! I'll turn it off again tonight when we go to bed and remember to monitor what happens in the morning when i turn it back on. I really apprecaite all your help LM and from your DP. If you ever need a shipping magazine published just give us a shout and DH will recipricate!