i have vaillant boiler iget heating but no hot water

chambore, December 2007

I have the same issue

Heating fires upt he boiler and I have hot water downstairs.

But hot water up stairs is very marginal

I'm sure the boiler must have a water pressure switch that fires it up when the tap is running. Maybe the switch is broken.

I think my switch is marginal operation and I'm trying to get a user manual to find out how to locate and mend it

Cheers

James

James, December 2007

check the diaphram on the hot water side

Peter, December 2007