Hi All
My Vaillant 624 has been slowly losing pressure over 2 weeks. I filled up to 1.5 bars. when the heating turned on it increased to 2.0 bars. I then noticed over a perios of 2 weeks or so it has slowly dropped to 0.9 bars.
There is no obvious leaks around the radiator pipes. I bled all the radiators and they are working fine.
The copper pipe outside doesnt seem to have any water dripping.
What could be the cause of this?
Thanks for your opinions.
My Vaillant 624 has been slowly losing pressure over 2 weeks. I filled up to 1.5 bars. when the heating turned on it increased to 2.0 bars. I then noticed over a perios of 2 weeks or so it has slowly dropped to 0.9 bars.
There is no obvious leaks around the radiator pipes. I bled all the radiators and they are working fine.
The copper pipe outside doesnt seem to have any water dripping.
What could be the cause of this?
Thanks for your opinions.
