Hello,
I have a Combi Boiler (Vaillant Ecotec Plus 428) and an Unvented Cylinder (Vaillant uniSTOR VIH GB 180s). Since yesterday we have no more hot water in the house, it comes out cold or luke warm. But the heating works fine.
When a hot water tap is fully opened, the boiler reads S.30 (no heating demand from external source). I have run the diagnostic, and the hot water flow sensor (D.36) reads 0 l/min as well.
My question is could the issue be most likely with the boiler (aqua sensor..) or the cylinder (valve..) ?
I'm wondering if I should call an unvented qualified or a gas engineer.
Thank you for your help.
David.
I have a Combi Boiler (Vaillant Ecotec Plus 428) and an Unvented Cylinder (Vaillant uniSTOR VIH GB 180s). Since yesterday we have no more hot water in the house, it comes out cold or luke warm. But the heating works fine.
When a hot water tap is fully opened, the boiler reads S.30 (no heating demand from external source). I have run the diagnostic, and the hot water flow sensor (D.36) reads 0 l/min as well.
My question is could the issue be most likely with the boiler (aqua sensor..) or the cylinder (valve..) ?
I'm wondering if I should call an unvented qualified or a gas engineer.
Thank you for your help.
David.
Last edited: