I've had a good look through at the postings on the common problem of loss of hot water with the Alpha CB28 combi. Mine is 4 years old, no previous problems.
I have the same problem as many of the other postings. ie; CH works fine but DHW is intermittent. It started to do this just before Xmas.
From what I have read it seems to me that if the CH has to be turned on to get any DHW it is most likely the DIAPHRAGM that needs to be replaced.
And, if the DHW is intermittent and unaffected by the CH setting it is more likely to be the FLOW SWITCH.
Does this sound feasible? I'm going to open things up and have a feel of the outlets from the diverter valve to try to diagnose this problem further.
Any help greatly appreciated.
I have the same problem as many of the other postings. ie; CH works fine but DHW is intermittent. It started to do this just before Xmas.
From what I have read it seems to me that if the CH has to be turned on to get any DHW it is most likely the DIAPHRAGM that needs to be replaced.
And, if the DHW is intermittent and unaffected by the CH setting it is more likely to be the FLOW SWITCH.
Does this sound feasible? I'm going to open things up and have a feel of the outlets from the diverter valve to try to diagnose this problem further.
Any help greatly appreciated.