Hi, we have a Vaillant ecoTEC pro 28 boiler and when we turn the 'Comfort' setting on to use hot water on demand, it also heats our radiators. They're piping hot all the time - but the radiator symbol isn't showing on the boiler.
If we turn the comfort Mode off this obviously doesn't happen, but it takes a very long time for the water to heat. Sometimes over 10 minutes to the kitchen tap right beside the boiler.
Can anyone please help or advise on what may be causing the issues?
If we turn the comfort Mode off this obviously doesn't happen, but it takes a very long time for the water to heat. Sometimes over 10 minutes to the kitchen tap right beside the boiler.
Can anyone please help or advise on what may be causing the issues?
