I moved into a property last month and the unvented water immersion heater has been the bane of my life.
I noticed hot water was coming through the tundish so called a plumber out. He replaced the heating element and also pumped up the booster cylinder as it had no charge in it.
2 weeks later the problem is back, I’ve been told that the prv and trv need to be replaced. (This is a different company as the original guy couldn’t come out).
I had also noticed that on the odd occasion the unvented immersion heater was making noise like running water. I wasn’t sure if the tank was refilling itself, is this normal? (Video attached below). At the time the video was taken the power to the tank was off and there was no taps running. This is the first time I’ve had an immersion heater as I’ve always had gas boilers and there is no manual so not sure what it should and shouldn’t be doing.
I noticed hot water was coming through the tundish so called a plumber out. He replaced the heating element and also pumped up the booster cylinder as it had no charge in it.
2 weeks later the problem is back, I’ve been told that the prv and trv need to be replaced. (This is a different company as the original guy couldn’t come out).
I had also noticed that on the odd occasion the unvented immersion heater was making noise like running water. I wasn’t sure if the tank was refilling itself, is this normal? (Video attached below). At the time the video was taken the power to the tank was off and there was no taps running. This is the first time I’ve had an immersion heater as I’ve always had gas boilers and there is no manual so not sure what it should and shouldn’t be doing.
