Question about Broan-NuTone CV556 Cyclonic Bagless Central System Vacuum

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Nutone CV556 Vaccuum Cleaner -Continuously running


Nutone CV556 Vaccuum Cleaner :
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I have been using Nutone CV556 for over 5 Yrs. Today (Sep 08,2009) While vacuuming , after I disconnected the hose from the wall outlet the system kept running. Nothing can stop it . I tried the switch on the power unit (ON/ OFF) , no luck. I looked at the wiring in the wall outlet that initiated the problem, nothing unusual. Any help

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Start with this. Unplug the vac to shut off, then disconnect the low voltage wiring at the vac.Plug the vac back in. If the vac still runs you have an internal short on the relay or wiring inside the vac.
If the vac stops then the vac and final wiring is OK and the problem is in the wiring in the house.
Have you removed any inlets for painting or had any renos done or pictures hung. If so undo what you did last. If inlets were disturbed remove them and look for low voltage vac wires touching metal backing plates in the wall or touching the inlet mounting screws.
If you have done a reno or hung pictures you may have pierece the wire for the vac creating a low voltage short which will keep the vac running until removed. I have seen this happen with freshly installed 1/4 round molding along a baseboard

Posted on Sep 07, 2009

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