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potterton, s plan, system fault
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<blockquote data-quote="Doc Hudson" data-source="post: 200981" data-attributes="member: 1607"><p>I think you need to fully establish the symptoms first. Do they mean HW &amp; CH are continually on all the time even when both are switched off, Or do they mean both come on when either is switched on, Does either either circuit work correctly at any stage or is everything always faulty. Have they had any recent alterations, plumbers or other? Could be incorrect wiring giving wrong signals out to the valves or a back voltage holding a valve driven from the switch on the other valve. Its unlikely two valves have both failed? I think you need to go and disconnect a few parts to test one half on its own then add the the other half back in. Keep a pen and paper handy to note the cable types &amp; colours used. and assume it has never worked correctly so double check every wire connection and don't take anything for granted. Only trust the items you have tested yourself, take it a step at a time and don't assume! Good luck with it Meerkat, let us know how you get on.</p><p></p><p>Doc H.</p></blockquote><p></p>
[QUOTE="Doc Hudson, post: 200981, member: 1607"] I think you need to fully establish the symptoms first. Do they mean HW & CH are continually on all the time even when both are switched off, Or do they mean both come on when either is switched on, Does either either circuit work correctly at any stage or is everything always faulty. Have they had any recent alterations, plumbers or other? Could be incorrect wiring giving wrong signals out to the valves or a back voltage holding a valve driven from the switch on the other valve. Its unlikely two valves have both failed? I think you need to go and disconnect a few parts to test one half on its own then add the the other half back in. Keep a pen and paper handy to note the cable types & colours used. and assume it has never worked correctly so double check every wire connection and don't take anything for granted. Only trust the items you have tested yourself, take it a step at a time and don't assume! Good luck with it Meerkat, let us know how you get on. Doc H. [/QUOTE]
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