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Central Heating & Storage Heaters Forum
Some Views On Fault Finding Procedures.
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<blockquote data-quote="pewe" data-source="post: 387504" data-attributes="member: 2387"><p>Just to clarify.</p><p></p><p>The timer has a single feed from the mains.</p><p></p><p>There are 2 switches inside. One is for an immersion at the bottom of the tank and is timed, set to a fixed period off-peak. The second switch is connected to the upper immersion and is powered when a 'boost' dial is turned on the front of the box.</p><p></p><p>@Rob_the_Rich</p><p></p><p>At 87 mum can be a bit forgetful and as she hadn't used the boost for such a long time she had forgotten about it - but as I mentioned before, if the timer had failed as part of the initial problem, then when connecting the new stat there would have been no power to blow it when the power was reconnected. </p><p></p><p>@NozSpark.</p><p></p><p>I'm not sure what is confusing you.</p><p></p><p>A shorting element would surely cause a power spike which would easily damage anything between it and the fuse box (ie thermostat and timer) as massive current is drawn - which is what happened.</p><p></p><p>Below is a photo of the element as I found it after their visits.</p><p></p><p>[ATTACH]5784[/ATTACH]</p></blockquote><p></p>
[QUOTE="pewe, post: 387504, member: 2387"] Just to clarify. The timer has a single feed from the mains. There are 2 switches inside. One is for an immersion at the bottom of the tank and is timed, set to a fixed period off-peak. The second switch is connected to the upper immersion and is powered when a 'boost' dial is turned on the front of the box. @Rob_the_Rich At 87 mum can be a bit forgetful and as she hadn't used the boost for such a long time she had forgotten about it - but as I mentioned before, if the timer had failed as part of the initial problem, then when connecting the new stat there would have been no power to blow it when the power was reconnected. @NozSpark. I'm not sure what is confusing you. A shorting element would surely cause a power spike which would easily damage anything between it and the fuse box (ie thermostat and timer) as massive current is drawn - which is what happened. Below is a photo of the element as I found it after their visits. [ATTACH]5784._xfImport[/ATTACH] [/QUOTE]
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Some Views On Fault Finding Procedures.
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