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Central Heating & Storage Heaters Forum
Vaillant 824 Wiring Issues
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<blockquote data-quote="Jimboc" data-source="post: 394736" data-attributes="member: 26407"><p>It's a Drayton MiTime 721R</p><p></p><p>It's not the programmer at fault I don't think.</p><p></p><p>Like I say, 3 and 4 act as the switch to activate the boiler. 3 is live out and 4 is the switched return, I think!</p><p></p><p>With the programmer disconnected from the boiler 3 and 4 are both showing as live without being connected together, that can't be right can it? PCB fault?</p><p></p><p>This is an old boiler by the way 2009 I think.</p></blockquote><p></p>
[QUOTE="Jimboc, post: 394736, member: 26407"] It's a Drayton MiTime 721R It's not the programmer at fault I don't think. Like I say, 3 and 4 act as the switch to activate the boiler. 3 is live out and 4 is the switched return, I think! With the programmer disconnected from the boiler 3 and 4 are both showing as live without being connected together, that can't be right can it? PCB fault? This is an old boiler by the way 2009 I think. [/QUOTE]
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