Glow worm swift flow 80

[peeler40]

Boiler works fine heating radiators.But tempermental supplying hot water
It would supply hot water only when the heating was on .And now even
this is hit and miss .I think its the hot water thermister .What do you people think ?
Best Wishes Billy

 

[gas4you]

Flow switch

 

[peeler40]

I will try the flow switch . The reason i was thinking its thermister is :-
if i start running the hot water when the boiler is in full flame the hot water
is fine , but if the the boiler is not in full flame the hot water produced is about a gallon then it starts to run cold . Thanks for the reply Billy .

 

[gas4you]

Thats because of the DHW heat exchanger has residual heat in it from the ch mode

 

[peeler40]

Where is the best place to buy the flow valve On the net ?.

 

[gas4you]

Try to google it. I have never bought boiler parts from net I always use local supplier or at a push Parts Center, so cannot give advice on this bit.