Hot water

[helpsy]

My old mans got a Valliant combi, and the hot water comes and goes(water still flows just cool, central heating ok).The unit is about 8 years old I think and the whole house is fed via a combimate unit.Is it possibly the secondary heater exchanger requires cleaning?Maybe there are too many possibilities/variables!!
Any thoughts?

 

[Billy Bob Bob]

no probaly a diverter valve which model?

 

[helpsy]

no probaly a diverter valve which model?

Have to find out is it something like ecotec or something like that I think???
If the diverter was faulty wouldnt the heating come on ??

 

[Billy Bob Bob]

your post said heating ok this has no effect on the dhw is it a turbomax by any chance?

 

[helpsy]

Thats the one actually dont no where ecotec came from!!!

your post said heating ok this has no effect on the dhw is it a turbomax by any chance?

I was just thinking that the diverter switched from flow to rads to flow across dhw heat exchanger.As you can prob tell don't know much about boilers!!I thought there was water flow switch and that kicked in pump around main exchanger and thought it would send it around rads if diverter prob?

 

[Billy Bob Bob]

no if the diverters failed it wont effect ch,find out what boiler it is and me or one of the other seniors can help further

 

[helpsy]

Cheers mate

 

[Plumbstar Tom]

I agree no HW but heating ok spelts out Diverter

Its worth learning the workings of a combis as i come across loads and people love to get rid of a gravity system and have a combi installled