Worcester Greenstar Heatslave 25/32 being weird.

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9 Oct 2019
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United Kingdom
Hi,

Its that time of year. We turned on the radiators, checked the system pressure and bled them and all was fine. Then the pump was making a strange surging that caused the diverter to rattle. Upshot was the pump needed replacing and somewhere in there the diverter screws for the motor came loose and was all stripped. So replaced the pump and the diverter and all was not ok.
The DHW keeps running then going cold and eventually comes back on and off again. The diverter sometimes moves by itself but most often not. I am obviously not a heat engineer, but I am fairly handy sorting things out. Am I missing something obvious. Any suggestions welcome, oh I know I will regret saying it.

Thanks
John
 
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An engineer is required I'm afraid looks like could be a major bust can't say I've had one like that it
looks like something major has happened.It would be interesting to find out what has actually
gone wrong.Bob
 
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yep i would go with heat store has air in the top so the sensors keep the valve on hot water mode
 

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