At the beginning of this year I decided to upgrade my combi boiler. It was finally fitted early January. When it came to commissioning/running through the final checks, it wouldn't work and the Gas Safe engineer tried many things before ringing the manufacturer. They were baffled, the whole thing appeared completely dead. It was arranged for the manufacturer to come to my home the following day. After fiddling for some time and going to his van for various boxed items, he got it working. When I enquired what the problem was, I was told a fuse had blown and there was moisture on the electrical contacts which were causing it not to work. This was a brand new and boxed boiler.
Things were fine for a few days but I then noticed the pressure kept dropping. I had online chats with the manufacturer over a few days and eventually they said they would again send out an engineer. The fault I was told was because the PRV was leaking and then they blamed it on a fault with the pressure vessel. Again things were fixed and it appeared to be working well. Now things have started to go pear-shaped again. Over the last couple of weeks I have had to re pressurise the boiler several times as it kept going down. All my radiators have been checked for air (when the heating was turned off). In 6+ years I have lived here I probably only had to re-pressurise my old boiler twice. I am obviously concerned that I have a duff boiler. Tonight I have taken this image and it clearly shows the bar pressure is only just above the red mark. Two weeks ago it was between 1.5 and 1.75. I contacted the manufacturer to express my disappointment but they have failed to reply although I initially got an acknowledgement that my message had been received.
What is my next move? The boiler is only just over 2 months old and already I have had 3 engineers out.
https://ibb.co/PMGWYJJ