Central Heating noisy

Supernova

Since my last British Gas Homecare visit when they replaced the pump and turned the hot water cylinder thermostat down by 5 degrees to 65 the system is permanently gurgling and the radiator bleed water is coming out more black than before.

Any idea what work would need doing to fix?

Many thanks
S

southcoastrgi

check the arrow on the pump body it should be pointing towards the mid pos valve, I've seen a few from BG & others that are installed the wrong way round, plus the cylinder stat should be at 60d not 65d

Supernova

southcoastrgi wrote: »

check the arrow on the pump body it should be pointing towards the mid pos valve, I've seen a few from BG & others that are installed the wrong way round, plus the cylinder stat should be at 60d not 65d

Thanks.

Installed like this:



Arrow on the left?

southcoastrgi

look at the back at the top it will have an arrow on the body inbetween the two valves

Supernova

southcoastrgi wrote: »

look at the back at the top it will have an arrow on the body inbetween the two valves

Thanks. Arrow is pointing towards the left i.e back towards the boiler. There are two valves either side of the pump.

S

southcoastrgi

do you have a mid position valve that directs the water from the boiler to either the heating or hot water that looks something like this ? if so where is this in relation to the pump ?

Supernova

southcoastrgi wrote: »

do you have a mid position valve that directs the water from the boiler to either the heating or hot water that looks something like this ? if so where is this in relation to the pump ?

No, nothing of that ilk near the boiler, just two normal valves either side of the pump like the one on the left at the back plus the red hot water shut-off valve further down the pipes to the right.

Thanks
S

Supernova

Well in the end called back British Gas because the fan was stuck and got one of the engineers who wasn't a jobsworth like the last few. He turned the pump speed down (only a small flat) and bled all the radiators with the heating off. Now perfick, heating far more efficient - and no noise!

S