water running hot then cold


Postby westbourne » Fri Dec 24, 2010 10:47 pm

hi i have a combi worchester cdi rsf
when i run the water it goes from hot to cold
it also jutters on and off like air stuck in the pipes
i have had a couple of people look at it but both seemed to have no idea
is it the heat exchanger and why the juttering on and off
westbourne
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Postby abbaskhizar » Tue Dec 28, 2010 5:44 am

westbourne wrote:hi i have a combi worchester cdi rsf
when i run the water it goes from hot to cold
it also jutters on and off like air stuck in the pipes
i have had a couple of people look at it but both seemed to have no idea
is it the heat exchanger and why the juttering on and off


it likely to be 100 percent a hot water temperature thermistor/probe.which is the located near the diverter valve.on the hot water outlet pipe.locate by checking manual and replace.they are easily replaced.I recently repaired an ideal isar 24he
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Postby westbourne » Tue Dec 28, 2010 2:21 pm

thank you abbaskhizar for your reply you sound confident that is the problem
first time its been mentioned, As i already said i have had a couple of people look at it. i forgot to add its also losing pressure over a day or two about half a bar with no show with leaks i have replaced the p/r/v
westbourne
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