If you are referring to the circ pump then there is, as (was pointed out to me) the CH is fine with rads heating, I suggested boosting the HW with the CH on, but does look more like air locking of the cylinder coil.
If you are referring to the circ pump then there is, as (was pointed out to me) the CH is fine with rads heating, I suggested boosting the HW with the CH on, but does look more like air locking of the cylinder coil.
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