Cold water tank in the attic overflowing

[GGg]

Ok then it’s impossible to tell from the angle of your pics the levels. That will be down to you. As long as the water in the f&e is lower than that in the larger tanks then you can rule out split coil. Only logical other fault then would be one of your mixers passing

Also if the coil was split would the water in the hot water tank be dirty? As it was relatively clean.

Can the mixers pass if they are off? As this has happened overnight so nothing on.

Thanks again.

 

[Riley]

Yes they can

 

[Riley]

Not always dirty depends on the system

 

[Riley]

If you have isolators on mixer taps you will need to turn them off systematically to work out which one. My bet would be a shower

 

[GGg]

If you have isolators on mixer taps you will need to turn them off systematically to work out which one. My bet would be a shower

Yeah will go around turning off the isolators on each tap and checking to see if the flow has stopped. Hopefully find it that way.

 

[GGg]

No joy. Turned them off one by one. And then turned off the isolation valve on the entire feed on the pump. Still trickling.

 

[Riley]

Let it drop back down to below the overflow

 

[GGg]

I noticed on the hot water pipes on the pump where freezing cold. Like a mains water pipe. Not sure if this is a stupid point to make, but I turned off the mains water and the water going into the tank has now stopped. If the coil was split wouldn’t it drain down the F&E?

 

[Riley]

How many pipes come off the two larger tanks you have a cold feed to the cylinder. Anything else?

 

[GGg]

How many pipes come off the two larger tanks you have a cold feed to the cylinder. Anything else?

Cold feed to cylinder on the one tank. The other tank has a cold feed to the pump for the bath (both hot and cold tank fed)