Hi,
I have a Vaillant 837 eco tec plus combi boiler. I noticed that the water pressure guage was fully in the red. I drained some water from a rad and the guage dropped back into the grey. I checked today and again guage back to full red. I drained some water again to get it back into the grey.
I checked the x2 valves to fill the system and when they are both turned on there is no flow of water. I checked for fault codes by pushing i and - symbols and the first instance was a F22 but when checked again there was no fault code only 2.5 reading which I presume is the current water pressure.
Has anyone any idea as to possible cause.
Thanks for any replies
I have a Vaillant 837 eco tec plus combi boiler. I noticed that the water pressure guage was fully in the red. I drained some water from a rad and the guage dropped back into the grey. I checked today and again guage back to full red. I drained some water again to get it back into the grey.
I checked the x2 valves to fill the system and when they are both turned on there is no flow of water. I checked for fault codes by pushing i and - symbols and the first instance was a F22 but when checked again there was no fault code only 2.5 reading which I presume is the current water pressure.
Has anyone any idea as to possible cause.
Thanks for any replies