No hot water but central heating fine

[DBatchelor]

Just to close this one out, I decided to try and change the valve as a last resort. It turns out it was that that was restricting flow, even though the motor and spindle were operating fine - the innards (diaphragm?) must have been buggered!

So the e majority of you were right all along! Moral of the story: just because all appears well, doesn't mean it is!

Thanks again.

 

[Whyme]

Good stuff, glad its sorted and you didnt have to pay us.:grin:

 

[DBatchelor]

Seems I spoke to soon, the error is back. I hear gurgling in the primary coil so it must be air that's trapped somehow because there's only water coming from the air release valve again.

 

[Aquazone]

Don't open the air release when the pump is on. Wait until it stops as it will allow the air to settle

 

[DBatchelor]

Worth flushing with Sentinel X400? Possibly a blockage rather than air in the coil?

 

[DBatchelor]

Quick update for anyone still interested (or coming across this with a similar problem):

I now have enough flow to operate both CH and HW, I assume the air has settled and escaped.

However, now I get a trickling sound from the boiler when either CH or HW valve opens (eventually the trickling stops after ~1min). I assume this means there is air in the boiler (which will hopefully eventually find its way out)?

 

[Whyme]

Yes it usually does pal.