Thanks to everyone who replied to my previous post earlier this week.
I have been having problems with the pressure on my Vailant ecotec 624. It was going right up to 2.7 and then, when switched off it came right down to 0.4 and needed topping up.
Since then the EV has been repressurised a second time by a competent heating engineer, but the problem persisted. Today he came back again and exchanged the little tap that allows you to top up the system as he thought water might be seeping through and he also replaced the PRV. He said there's nothing wrong with the EV since it's not getting hot which means it's not got water in it.
After he left I switched on the system and the pressure went right up to 2.7, but then, bizarrely, fell back to 1.2, which is the level he pressurised the EV at. It's been running now at 1.1/1.2 for around 50 minutes so quite normal.
Then after one hour it suddenly dropped to 0.6.
Has anyone come across this kind of behaviour in a boiler? Going up to 2.7 is too high, isn't it? Or are these fluctuations normal? Should the engineer come back again and perhaps replace the EV anyway? I'm losing faith in Vaillant. I thought they were the best?
Seb
I have been having problems with the pressure on my Vailant ecotec 624. It was going right up to 2.7 and then, when switched off it came right down to 0.4 and needed topping up.
Since then the EV has been repressurised a second time by a competent heating engineer, but the problem persisted. Today he came back again and exchanged the little tap that allows you to top up the system as he thought water might be seeping through and he also replaced the PRV. He said there's nothing wrong with the EV since it's not getting hot which means it's not got water in it.
After he left I switched on the system and the pressure went right up to 2.7, but then, bizarrely, fell back to 1.2, which is the level he pressurised the EV at. It's been running now at 1.1/1.2 for around 50 minutes so quite normal.
Then after one hour it suddenly dropped to 0.6.
Has anyone come across this kind of behaviour in a boiler? Going up to 2.7 is too high, isn't it? Or are these fluctuations normal? Should the engineer come back again and perhaps replace the EV anyway? I'm losing faith in Vaillant. I thought they were the best?
Seb