Anyone have any suggestions why my MicroGenus 23 MFFI could suddenly started running at 3 bar hot? It was installed about 8 years ago and until a week ago, has always been at 1 bar static cold, rising to 2 bar running hot.
My first thought was sludge blocking the system somewhere but there's no cold spots anywhere and it's always been more than double dosed with X100. Despite this, I've had X400 in it for a week and when I drained that out this morning, only a few small black specks came out with it. I've also had the Ariston cleaner/filter accessory attached to the return connection and there's nothing trapped in the filter.
Refilled it with water and new X100 this morning but it's still exactly the same.![Mad :mad: :mad:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
My first thought was sludge blocking the system somewhere but there's no cold spots anywhere and it's always been more than double dosed with X100. Despite this, I've had X400 in it for a week and when I drained that out this morning, only a few small black specks came out with it. I've also had the Ariston cleaner/filter accessory attached to the return connection and there's nothing trapped in the filter.
Refilled it with water and new X100 this morning but it's still exactly the same.