No hot water / no ch - yet!

[nysk2008]

Hi all,

I have a customer who has an indirect unvented system. I would fire up the boiler and loud banging noises would come from around the 3-port and pump area and the boiler would shut down, turns out it was the pump (thanks for that "steve the plumber")

Anyway by request of the customer I fitted a new cylinder, new pump and new 3-port and I am still getting the same problem.

The system is full of sh** and to be honest could do with flush.

Could this problem be any of the following

Needs a flush as cant pump water?
Dodgy electrics forcing pump to cut out (the customer done his own wiring and it is dodgy)
or something else

It make this baging noise when calling for Hot Water and when calling for Hot water / CH

I know I have been going on on the thread but just wanted to give all the info.

any help would be great.

Cheers

 

[moony]

probably be what you've mentioned - would of been a good idea to drain and flush while you were changing the cylinder and pump etc. also get your multi meter out and check the wires connections etc etc. they can both be ruled out then.

 

[nysk2008]

thanks for this q-plumb. I will look into both - wish I had flushed first now

Cheers for your help