water running hot then cold Help and information on all topics relating to your central heating, air conditioning and ventilation issues.

[westbourne]

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

[abbaskhizar]

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

[westbourne]

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