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Hot Water Problem Sanity Checks

Postby willsie01 » Tue Jun 22, 2021 10:15 am

Any sanity checks I can make before calling service engineer out? Ran out of hot water yesterday. The unvented Indirect Cylinder has primary heating from System Boiler and secondary from element. Neither are heating the water! The CH radiators are still being heated. The programmer is displaying the correct call for HW.
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