volkera linea 28 pressure rising

27 Feb 2004
Reaction score
United Kingdom
Hi I had to disconnect two radiators whilst decorating and lost pressure in CH system. After replacing rads and repressurising system the pressure gradually increases when CH system off. If i leave filling loop in boiler position pressure gradually increases, if filling loop is in off position there is no pressure increase ( but no HW obviously) I believe it is the heat exchanger would I be right? poss pinholed due to the difference in pressure when drop in CH system???
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Disconnect the filling loop hose and check that the lever valve is not passing.
It is a common problem.
will give it a bash but i thought that as it does not pass when in off position that that would mean valve ok
When turned to on position they often pass to the filling loop.
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yes when valve is in boiler position ie straight uo there is a steady drip about 1 every 10 secs would that cause pressure to rise?? and if so what is the cure lol
cheers for that did not think a little drip would increase pressure realised it would need a new one is it a " stadard part" or special vokera one and where could i get one from? srry to be a pain lol but thx for your help
It depends on boiler serial no.

Two types were fitted. Check your boiler manual or phone vokera with the s/n to get part no.

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