Hi,
My cold water tank in the loft has started to fill and leak water from the overflow. It happens most mornings and started a few weeks ago. The float valve has been replaced twice so that's not the issue.
The loft has 2 tanks, it's the big cold water tank that leaks not the small fe tank. There are 2 motorized valves in the airing cupboard near the pump and cylinder. The boiler is a worcester greenstar Ri.
What happens is that in the morning the HW comes on and after it stops, something causes the float valve to get drowned. Once it's drowned it starts letting more water in until the cold water tank is full. If I use up some water from the tank, then the float valve behaves normally and the situation is resolved until the next morning.
I can't figure out what causes the float to drown. I tied a container under the cold tank vent pipe and there's no water venting into the tank.
Thanks.
My cold water tank in the loft has started to fill and leak water from the overflow. It happens most mornings and started a few weeks ago. The float valve has been replaced twice so that's not the issue.
The loft has 2 tanks, it's the big cold water tank that leaks not the small fe tank. There are 2 motorized valves in the airing cupboard near the pump and cylinder. The boiler is a worcester greenstar Ri.
What happens is that in the morning the HW comes on and after it stops, something causes the float valve to get drowned. Once it's drowned it starts letting more water in until the cold water tank is full. If I use up some water from the tank, then the float valve behaves normally and the situation is resolved until the next morning.
I can't figure out what causes the float to drown. I tied a container under the cold tank vent pipe and there's no water venting into the tank.
Thanks.