I'm having trouble with a salamander twin inpeller pump, it services two thermostatic bar mixer showers on a typical system. Pump's on the floor in the ariing cupboard and runs in 22 all the way until it splits in the loft.
They've been in around 8 weeks now and the one mixer valve seems to starve the other so has to be turned on briefly to get the other going.
Any idea's much appreciated

They've been in around 8 weeks now and the one mixer valve seems to starve the other so has to be turned on briefly to get the other going.
Any idea's much appreciated
