Hi
We have a dual (back boiler + OFCH) system. Had a bit of a problem over the last few weeks with apparent air in the system - one radiator stone cold. Then noticed that sometimes it was alright so TBH just didn't really do anything about it - the room in question isn't often used.
Then, noticed it again but also noticed a pattern - I think.
It seems that when we use the OFCH all the rads heat fine but when we use the back boiler/pump is when we have problems - could this be right and does it mean e.g. that the pump has become weaker and is maybe on it's way out? It wasn't always like this.
We have a dual (back boiler + OFCH) system. Had a bit of a problem over the last few weeks with apparent air in the system - one radiator stone cold. Then noticed that sometimes it was alright so TBH just didn't really do anything about it - the room in question isn't often used.
Then, noticed it again but also noticed a pattern - I think.
It seems that when we use the OFCH all the rads heat fine but when we use the back boiler/pump is when we have problems - could this be right and does it mean e.g. that the pump has become weaker and is maybe on it's way out? It wasn't always like this.