Recent content by markt

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    potterton combi 100. Hot water, but cold rads

    Hi Guys My potterton combi 100 is heating water fine, but only fires up for one minute on CH then switches off. Having switched it self off there is the sound of water being pumped round the system. All rads are cold, there is no air in rads and all leds are ok. Any ideas guys?
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