No Hot Water

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No Hot Water

Post  keithB on Mon Sep 25, 2017 3:52 am


Please help with the following issue, unit has worked fine for years until now.

No hot water, pump on the plate heat exchanger constantly runs, unless I isolate the electrics and turn back on, Boiler fires but constantly locks out on it's overheat stat.

Boiler set on high and Boiler has been checked and passed working fine.

Hot water obtained if heating put on, heating works fine.




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Re: No Hot Water

Post  mike on Tue Oct 10, 2017 8:35 am

Check fault codes on ACB
Chances are senor problem
But does look like ACB might have failed.



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