Vokera Linea 24 Boiler fires up but no DHW

[spannor]

Hi guys,

My problem is I have no DHW it just runs stone cold even though the boiler fires up and stays lite, the central heating seems to work fine.

Just noticed that my My rads are getting hot when the DHW is demanded .

Does that point to the divert valve manifold or the motor ?

Thanks guys

 

[Agile]

If the boiler lights on DHW then the heat has to go somewhere!

Probably to the rads!

Sounds like a diverter valve issue!

Tony

 

[spannor]

Hi tony,
Thanks for the reply.

I put a service kit in at the backend of last year.

Also to add I have turned the knob on the front of the boiler to just DHW and turned the thermostat right down on the wall .

And the without turning on a tap the boiler has fired up and is still warming the rads

 

[nickso]

Remove diverter motor, turn tap on and push diverter spindle in....see if it still heats rads.

Did you clean the heating port where the bobbin seals onto when you changed them? most don't bother.

If water is stone cold my first guess is spindle is stuck.

 

[spannor]

Hi again,

I did as you said and when I pushed the spindle in It got warm water (not hot)

So I checked the diverter motor and It didn't move when the taps were turned on.

I had an old motor in the garage ( wasn't sure if it's faulty) and this one moves,

Fitted it and I got warm water but rads heat up ... So I will check the bobbin seat today

I believe I did clean it when I fitted the kit last time.


I am going to fit a magnaclean to my system as I guess the DHW heat exchanger is clogged too.

I think I have a very dirty system,