W/Bosch Greenstar boiler problem

Postby leeroy111 » Thu Dec 02, 2010 3:39 pm

We have a problem with our 3 year old Worcester Bosch Greenstar 30 CDI conventional condenser boiler / Honeywell controller.
Recently switched heating & hot water to constant in the bad weather, central heating ok but hot water not heating up, does anyone know why ?

Luckily we have an immersion element in the cylinder on timer whch we are having to use. The boiler works correctly when on auto with both heating & water coming on twice a day, as soon as we switch to constant we have no hot water via the boiler.
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