Had the filling tap replaced approx 4 months ago by a senior engineer at Vaillant and then had the boiler serviced a week later by a local firm. 2 days ago noticed that the pressure had gone down to 0.9 and was the first instance that I have had to use it since. It required a bit of force to open it and when I had the required pressure and closed the tap, water continued to leak from a valve that the filling loop connects to and am having to switch off the water from the mains for it to stop.
It appears that the water drops at a greater rate when the tap is fully closed and tends to fall at a slower rate when you partially turn it in the open direction after having fully closed it. When you fully close the tap and the water is leaking you also notice the pressure recording going up over time.
Can anybody tell me what the problem may be and what it is that needs replacing.
Thanks for you time.
It appears that the water drops at a greater rate when the tap is fully closed and tends to fall at a slower rate when you partially turn it in the open direction after having fully closed it. When you fully close the tap and the water is leaking you also notice the pressure recording going up over time.
Can anybody tell me what the problem may be and what it is that needs replacing.
Thanks for you time.