Honeywell Powerhead problem

[Echo the husky]

yes if you have power there after that and the boiler isn't running the fault is elsewhere.

 

[Charles Victor]

Thanks for that, Echo the husky - and please excuse radio silence. I was sent abroad to work at short notice and only now am back home. The good news is that whilst I was away my wife didn't complain of a lack of HW but this might be because it is being heated when CH and HW are both being demanded as opposed to only HW. Now I am back home I have just set the HW to be demandable only once per day (15:00-20:00) an hour before the CH, and by when usage during the day will have caused demand. Hopefully I will be working from home for a few days so have also set an alarm on my mobile telephone timed for me to go and check that HW demand fires the boiler.

Stand by.

 

[Charles Victor]

After several days' monitoring as described above I have found that the system is now working correctly. Other than remaking every connection in the junction box I have done nothing so can only assume that beforehand I had an open circuit somewhere.

Thanks again for all the help; hugely appreciated and I have made some notes from it that will be of benefit if I have to troubleshoot the CH or HW circuits again in the future.
CV