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  1. P

    Siemens MA-V322C 3 way valve

    thanks mandate. will post result when i can
  2. P

    No central heating unless hot water system is heating

    ok thanks for advice. Will let you know the result when i get round to fixing it! Bit busy at the moment and as the house is warm its a low priority now i know what to do
  3. P

    No central heating unless hot water system is heating

    Thanks for advice. Also some further info. The system has a siemens rwb9 controller/programmer and a siemens ma-v322c 3 way valve. If the 3 way valve is manually opened, when only central heating timer is on, the radiators don't get hot. The boiler will only start up when hot water system is...
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    No central heating unless hot water system is heating

    After some problems with a 3 way valve I have now discovered that the central heating only works (by this I mean the radiators get hot) when there is demand for hot water. To be exact the boiler only starts when the hot water is switched on and requires heating. Any suggestions for solving this...
  5. P

    Siemens MA-V322C 3 way valve

    thanks for all help. After more fault finding/ general playing with the system I have now discovered that the central heating only works (by this I mean the radiators get hot) when there is demand for hot water. To be exact the boiler only starts when the hot water is switched on and requires...
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    Siemens MA-V322C 3 way valve

    Sorry I also should have mentioned the buzzing noise has only been present for 2 or 3 weeks.
  7. P

    Siemens MA-V322C 3 way valve

    Thanks for advice. (I was just after info on what was involved with the wiring side of replacing the actuator/and if that was likely to rectify the problem). Sorry my original info wasn't very good. A more complete explanation is that there is buzzing when the valve is energised and it doesn't...
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    Siemens MA-V322C 3 way valve

    I am having problems with this valve buzzing which I assume is going to mean replacing the valve head. Any advice on this (mainly the electrics) would be appreciated. Thanks
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