Hi, long time lurker but untill now I have not had any problems, that said, I have just drained my Ariston Clas HE 30 heating system down to put in a new radiator in my lounge once I was finished I refilled the system only to find that I had put the TRV on the wrong side, so I drained the system down again and refitted the TRV on the correct side and I am now trying to re fill the system but the pressure is stuck at 0.5 bars and will not go beyond this? If I leave the water tap open a white box to the left of my boiler whirrs and seems to pump out the water? The white box is called a Boss condesate pump? I have never seen one of these before?
My question is what can I do to refill the system and why is it not allowing me to pressurize the system to 1 bar? there are no leaks and the pressure is not moving at all.
My question is what can I do to refill the system and why is it not allowing me to pressurize the system to 1 bar? there are no leaks and the pressure is not moving at all.