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  1. J

    Potterton Suprima 100 Lock Out - Expansion Vessel

    Thanks a lot for your help can you upload photos on here? - if so I'll take a pic and Stick it up. There is a lot of air in the system now rads are gurgling like mad, there is 1.5 bar of pressure in the expansion vessel - but the pressure gauge on the boiler outlet reads zero! i think i...
  2. J

    Potterton Suprima 100 Lock Out - Expansion Vessel

    Well there's one issue then!, my pump isn't wired directly to the boiler, it's wired to the S plan junction box. there is some additional pipework around by the two motorised valves, upto the boiler pipes so that may be a bypass
  3. J

    Potterton Suprima 100 Lock Out - Expansion Vessel

    Thanks, the system was quite gurgly when operating - as if there is air in the system, after I re-charge the vessel it shuts up. I have bled all the rads How do I check the pump over-run is functioning correctly? - just the 'screwdriver' test For the pump to over-run, does it have to be...
  4. J

    Potterton Suprima 100 Lock Out - Expansion Vessel

    Hello to all at DIYnot Forums, this is my first registered post, this looks an excellent DIY Forum!. I have the Dreaded Potterton Suprima Lock-out problem, that has been occurring on a random basis for a good while. I have checked the Thermostat & temp sensor & they seem to function ok...
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