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originally it was the brushes that were too short so replaced and bedded in with crocus paper. All worked a treat for a while then a couple of months later the motor started exhibiting the same symptoms of having under length brushes on the spin cycle going from 8 mins to 1 and never really...

Hi I have the same symptoms as others on this site but my observations are slightly different than others. My system is a domestic one with a Potterton 50e boiler. The 3 way valve is the (much maligned by most of the engineers on this website)switchmaster. Pump is the Grunfos 15/50 and the...