Hi I seem to have an issue with my thermostat on the Ariston WRc-NSF unvented cylinder.
The water coming out of the hot water tap is very hot, but with the cylinder knob right down it still seems to 'click on', causing my programmer to send a hot water demand to the Vaillant ecoTeEC 637 System Boiler. If I keep turning it down it does click off, until I have to turn it down further, while not making much difference to the water temperature. The boiler's flow temp is about 80 degrees, if that makes any difference.
If the cylinder stat is set all the way down (about a centimeter before the off position) and the water is already quite hot, does this indicate a fault with it?
I just want to rule it out or call in a G3 plumber before I start blaming the controller which has been running solid for 10 years.
The water coming out of the hot water tap is very hot, but with the cylinder knob right down it still seems to 'click on', causing my programmer to send a hot water demand to the Vaillant ecoTeEC 637 System Boiler. If I keep turning it down it does click off, until I have to turn it down further, while not making much difference to the water temperature. The boiler's flow temp is about 80 degrees, if that makes any difference.
If the cylinder stat is set all the way down (about a centimeter before the off position) and the water is already quite hot, does this indicate a fault with it?
I just want to rule it out or call in a G3 plumber before I start blaming the controller which has been running solid for 10 years.
