Morning all, my 105e has been playing up, If I turn the pre-heat switch up and the selector switch to hotwater , and shut the flow and return valves all is good in the world. If I open the flow and return the radiators heat up and the DWH is slow to heat at the taps.Also when I put every thing back to normal set up and run the central heating I start to loose pressure.
Could the problem be in the valve on the left hand side the one with the motor on top, and if so where could i purchase a kit to repair it.
Any info is welcome thank you
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