Hi, wondering if anyone has had this issue before;
i have just just put an external expansion vessel onto a main combi 30he as the old one had perished. However after about a day the pressure is dissing again above three bar. The filling loop is not passing. My only other thought is there is a perforation in the plate to plate heat ex which is passing water through to the boiler. To make it more awkward I can't isolate the hot water to test this due to the age of the customers. Before I replace the plate to plate, I was wondering if anyone had this issue before.
many thanks
i have just just put an external expansion vessel onto a main combi 30he as the old one had perished. However after about a day the pressure is dissing again above three bar. The filling loop is not passing. My only other thought is there is a perforation in the plate to plate heat ex which is passing water through to the boiler. To make it more awkward I can't isolate the hot water to test this due to the age of the customers. Before I replace the plate to plate, I was wondering if anyone had this issue before.
many thanks