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Duel Source Towel Rail Problems
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<blockquote data-quote="mvkpe1" data-source="post: 371988" data-attributes="member: 14992"><p>Hi just after a bit of advice, I have been called back about a year after installing an electrically heated towel rail that is also connected to the central heating pipework. The fault caused the RCD to trip when ever the towel rail fused spur was turned on, I checked insulation resistance and found that L to N and to PE were all showing as a full short. The plumber drained the system and changed over the element. I went back afterwards and reconnected the element to the SS and the same thing happened. The new element has a detachable control unit that allows a 2 hour boost and has a thermostat control knob, it all works fine when the control unit is detached from the element, all lights work, thermostats clicks etc, but as soon as the element and control unit are plugged back together the RCD trips. Any ideas where or what to start looking for? The switched spur is part of the 1st floor ring and tests and works normally.</p></blockquote><p></p>
[QUOTE="mvkpe1, post: 371988, member: 14992"] Hi just after a bit of advice, I have been called back about a year after installing an electrically heated towel rail that is also connected to the central heating pipework. The fault caused the RCD to trip when ever the towel rail fused spur was turned on, I checked insulation resistance and found that L to N and to PE were all showing as a full short. The plumber drained the system and changed over the element. I went back afterwards and reconnected the element to the SS and the same thing happened. The new element has a detachable control unit that allows a 2 hour boost and has a thermostat control knob, it all works fine when the control unit is detached from the element, all lights work, thermostats clicks etc, but as soon as the element and control unit are plugged back together the RCD trips. Any ideas where or what to start looking for? The switched spur is part of the 1st floor ring and tests and works normally. [/QUOTE]
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