Hi,
Ive googled as much as I can but am now looking for some advice from somebody thats knowledgable in this area.
My Valliant boiler as been showing the F75 error since we moved in about 6 months ago.
About once every 7-10 days I have to recharge/repressure the system.
From what I can see the system is losing pressure but there is no water outside at all from the discharge pipe.
Does this automatically mean a leak somewhere or could it be something else?
Im currently observing the gauges to see if the pressure climbs high before it drops.
Ive had the exp vessel repressured today by a British Gas engineer but it failed again after about 4 hours!!
Any help would be appreciated. Just trying to shortcut the fix time here. Not doing it myself but just trying to understand etc.
Thanks!
Lee
EDIT: Wanted to add that I repressurised the system after it failed today back to 1.5BAR. With the heating running its now reading 2.3. Is this too high?
Its quite a big house so maybe I need an additional exp.v?
My main concern is either way, whether the system is over pressurised and then dumping, or if the system is just losing pressure, shouldn't I see the water escaping outside? Does this suggest a leak even if I need another expv?
Ive googled as much as I can but am now looking for some advice from somebody thats knowledgable in this area.
My Valliant boiler as been showing the F75 error since we moved in about 6 months ago.
About once every 7-10 days I have to recharge/repressure the system.
From what I can see the system is losing pressure but there is no water outside at all from the discharge pipe.
Does this automatically mean a leak somewhere or could it be something else?
Im currently observing the gauges to see if the pressure climbs high before it drops.
Ive had the exp vessel repressured today by a British Gas engineer but it failed again after about 4 hours!!
Any help would be appreciated. Just trying to shortcut the fix time here. Not doing it myself but just trying to understand etc.
Thanks!
Lee
EDIT: Wanted to add that I repressurised the system after it failed today back to 1.5BAR. With the heating running its now reading 2.3. Is this too high?
Its quite a big house so maybe I need an additional exp.v?
My main concern is either way, whether the system is over pressurised and then dumping, or if the system is just losing pressure, shouldn't I see the water escaping outside? Does this suggest a leak even if I need another expv?