Pressure now dropped and things working better, more flow through system and can actually feel some warmth in return pipe. Going to have a go at balancing and see what happens.
Will look into paperwork and certificates on Monday.
I take it I should not be concerned about thermostat and...
16 rads on system
Balancing was done but not by anyone with any real skill.
Don't know if balancing was carried out at commissioning.
temp is set to 5 on a scale of 6
Will drop the pressure and post back.
My 1 year old combi system is not performing very well, hot water is fine but the heating is not. Since it has been installed I've never really been happy with its performance with no radiator ever getting really getting hot.
However we have had a loft extension put in this last month with...