oil; combi; worcester; no heating

  1. O

    Worcester oil 18/25 no central heating

    Hello all Appreciate your help please. I have hot water, no central heating on an oil boiler combi 1. Diverter valve is fine 2. Heating comes on sometimes on demand, but generally doesn't 3. Room stat seems fine... it clicks on, but the boiler won't fire for heating 4. Pressure is ok 5...
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