Hi,
Due to my old heat exchanger getting clogged up and giving me a hot cold hot cold hot shower I have today replaced the heat exchanger - something which has worked well in the past to resolve the same problem.
After fitting the new part today though, I am left with no hot water. The CH works fine but when I open the hot tap - nothing. Interestingly if I turn the CH on and then the DHW, the boiler cuts out.
The LED on the DHW flow switch lights up so I suspect that is working ok.
The diaphragm which pushes the spindle into the flow switch works fine for CH but doesn't move for DHW.
If I manually override the flow switch and press the microswitch, with the tap open the boiler fires into life and I get hot water.
So it seems to me something is stopping the diaphragm from doing it's thing. And it only started after I replaced the HE.
Can anyone help? I know it's hot today but I don't really want a freezing cold bath tonight!!
Thank you.
Edit: I'm not sure how I left this off - it's an Ideal mini HE C28.
Due to my old heat exchanger getting clogged up and giving me a hot cold hot cold hot shower I have today replaced the heat exchanger - something which has worked well in the past to resolve the same problem.
After fitting the new part today though, I am left with no hot water. The CH works fine but when I open the hot tap - nothing. Interestingly if I turn the CH on and then the DHW, the boiler cuts out.
The LED on the DHW flow switch lights up so I suspect that is working ok.
The diaphragm which pushes the spindle into the flow switch works fine for CH but doesn't move for DHW.
If I manually override the flow switch and press the microswitch, with the tap open the boiler fires into life and I get hot water.
So it seems to me something is stopping the diaphragm from doing it's thing. And it only started after I replaced the HE.
Can anyone help? I know it's hot today but I don't really want a freezing cold bath tonight!!
Thank you.
Edit: I'm not sure how I left this off - it's an Ideal mini HE C28.