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No Hot Water From Nearest Hot Tap to old Vaillant Boiler?

Postby Carnegie » Wed Jul 22, 2015 4:40 pm

I have an old Vaillant combi boiler which is/was working fine. When I turn on kitchen hot tap (nearest tape to the boiler) the boiler does not fire but when I turn on the bathroom basin hot tap it fires and produces hot water. If I then turn on kitchen tap, hot water also comes out. I recently had the diverter valve diaphram replaced following similar problem. Any ideas
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Simply Build It

Postby DIYDoctor2 » Mon Sep 07, 2015 9:35 am


This sounds like you will need to check the installation of the diverter valve again as it may not be diverting correctly

Hope this helps
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