Hi all,
I'm having problems with my boiler and am hoping someone can offer me advice. Few days ago our heating and hot water stopped and on inspecting the boiler I was met with the F.75 error. We had a plumber come out and the first thing he asked was if I had the owners manual which didn't fill me with confidence. Anyway, I didn't have one as we recently moved in so the plumber tried refilling the system to bring it up to 1.4/1.5 as he said this what Vaillant's were supposed to be at. It got it working which was great until yesterday morning when we lost heating and hot water again. As I had watched what he had done, I refilled it and again this morning the pressure had dropped.
Now before I call a plumber out again, I want to try and narrow the issue. I have been searching and found that it could be a number of things but I want to try and establish if it's a leak in the system or if it's a problem with the boiler. Is it possible for a DIY'er to do this? I have checked the visible areas around the radiators for a leak but can't see any signs of one (assuming that going from 1.5 to 0.9 in less than 24 hours would mean a reasonable size leak!). Also, there are a few "valves" with screw slots underneath and one was at 45 degrees. Should all the valves be closed? If not, which ones should be open and which should be closed?
Any help/advice appreciated.
Thanks.
I'm having problems with my boiler and am hoping someone can offer me advice. Few days ago our heating and hot water stopped and on inspecting the boiler I was met with the F.75 error. We had a plumber come out and the first thing he asked was if I had the owners manual which didn't fill me with confidence. Anyway, I didn't have one as we recently moved in so the plumber tried refilling the system to bring it up to 1.4/1.5 as he said this what Vaillant's were supposed to be at. It got it working which was great until yesterday morning when we lost heating and hot water again. As I had watched what he had done, I refilled it and again this morning the pressure had dropped.
Now before I call a plumber out again, I want to try and narrow the issue. I have been searching and found that it could be a number of things but I want to try and establish if it's a leak in the system or if it's a problem with the boiler. Is it possible for a DIY'er to do this? I have checked the visible areas around the radiators for a leak but can't see any signs of one (assuming that going from 1.5 to 0.9 in less than 24 hours would mean a reasonable size leak!). Also, there are a few "valves" with screw slots underneath and one was at 45 degrees. Should all the valves be closed? If not, which ones should be open and which should be closed?
Any help/advice appreciated.
Thanks.
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