C
Cainan
Hi all,
I went to a customers property yesterday afternoon where they are having to re pressurise the combi at least once a week.
as there was good access under the floor boards I crawled about checking all central heating pipework. I then checked the drain off valve. All was bone dry. I can only assume at the moment that the upstairs heating pipes are also fine as there is no sign of a leak on the ceiling. I then concentrated on the boiler. Disconnected a fitting at the pressure relief valve (plastic pipe by the way which I will need to replace) and found there to be a little water in it. The pipe runs the length of the attic and through the wall so asked the customer to stand outside while I blew through the pipe. In doing so the customer witnessed a waterfall of water come out the pipe for the 3 seconds or so. Great I thought, prv is passing by. I left a little container under the open ended pipe and asked him to check it in a few hours or so and reconnect the plastic bend again. Although I was certain this was the cause it was just to make sure.
so I then get an email this morning letting me know unfortunately the pressure has went back down to zero! However the container is bone dry. Slightly confused now as to why water was in the prv pipework but this isn't the cause. And the 1.5 pressure I re pressurised it to is now back to zero. It then surely goes back to a leak elsewhere?
any suggestions would be great
I went to a customers property yesterday afternoon where they are having to re pressurise the combi at least once a week.
as there was good access under the floor boards I crawled about checking all central heating pipework. I then checked the drain off valve. All was bone dry. I can only assume at the moment that the upstairs heating pipes are also fine as there is no sign of a leak on the ceiling. I then concentrated on the boiler. Disconnected a fitting at the pressure relief valve (plastic pipe by the way which I will need to replace) and found there to be a little water in it. The pipe runs the length of the attic and through the wall so asked the customer to stand outside while I blew through the pipe. In doing so the customer witnessed a waterfall of water come out the pipe for the 3 seconds or so. Great I thought, prv is passing by. I left a little container under the open ended pipe and asked him to check it in a few hours or so and reconnect the plastic bend again. Although I was certain this was the cause it was just to make sure.
so I then get an email this morning letting me know unfortunately the pressure has went back down to zero! However the container is bone dry. Slightly confused now as to why water was in the prv pipework but this isn't the cause. And the 1.5 pressure I re pressurised it to is now back to zero. It then surely goes back to a leak elsewhere?
any suggestions would be great
