Well, if the guy wants to get in to a fight with the company then he is going to have to prove that the water quality is fine or it is not the water quality that has caused the fault.
Having more then one fault is not unheard of btw or one that only shows up after the guy have been at it
For all we know it could be simply the dhw ntc is faulty and the dv is fine, or the gas value is not mod'ing up to full gas rate for dhw or any number of things. If you don’t trust the homeserve folk then you going to have to get in a second opinion at what the fault is.
btw when you changed the dhw HX was there any black flakes coming out of it.
but i agree homeserve, bg...etc are all the same in my view.
Having more then one fault is not unheard of btw or one that only shows up after the guy have been at it
For all we know it could be simply the dhw ntc is faulty and the dv is fine, or the gas value is not mod'ing up to full gas rate for dhw or any number of things. If you don’t trust the homeserve folk then you going to have to get in a second opinion at what the fault is.
btw when you changed the dhw HX was there any black flakes coming out of it.
but i agree homeserve, bg...etc are all the same in my view.