Hi guys, I have a vaillant eco pro 28 just 2 years old due for 2nd service , but it has just started to cut out (f28 and f29) when the heating is on and the hot water is run.
Makes a few clicking banging noises when 1st switched on. Any help would be much appreciated.
Makes a few clicking banging noises when 1st switched on. Any help would be much appreciated.