combi 90

  1. R

    grant combi 90 - hot water - cold

    Hi , I'll try and answer as much as I can CH fine - changed 3 way valve 2 year ago, changed pump around year ago along with air vent and recent PRV. HW flow always been low, pulled of the Flow valve & the CW in filter was blocked, a little scale inside bottom of the valve itself, valve seems...