Question about Vacuums

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I've just installed a hoover central vaccum SH800CA and when i plug the hose in the inlet, it doesn't turn on. It turns on when I turn on the switch on the canister

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  • sv_chan Sep 28, 2009

    Thanks for the suggestion.. it seems the problem is the wiring. The vacuum system was pre-wired when the house was constructed and now that the walls and basement are finished, we need to find a way to fix the wiring without breaking any walls. We added ourselves an inlet last year in the basement when we finished it and that works so we deduced it to the builders not doing a good job on the rest of the house re; the vacuum wiring. Any suggestions?

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The hose connects to a set of low voltage contacts inside the top of each inlet. The vac wiring is connected by a low voltage circuit to each inlet as well. your hose when plugged in completes the circuit when you turn the hose switch on. For simplicity ,I also use a coin to connect the terminals mentioned below instead of dragging the hose with you.
Reinsert the hose with the tongue or cord at 12 o clock or 6 o'clock position. If the vac does not start, rotate the hose cuff to 3 oclock.This over rides the hose handle switch to test the vac circuit.
if the vac still does not start you have a loss of LV signal in your wiring. You will need to back track to make sure you have continuity from the vac to each inlet.
if you have colored alarm or telephone type wire, it is very easy to break a wire strand while fastening so go back one connection at a time and inspect.
If you have no power to any inlets,your problem will be in the main run of wire from the vac, likely to the first connection. If you have power at only some inlets, your issue will be at one of your wire junctions, either at a pipe intersection or where two wires meet at an inlet, depending on how the system was wired.
Post back to say how you are making out

Posted on Sep 27, 2009

  • Chemist1961 Sep 27, 2009

    The hose connects to a set of low voltage contacts inside the top of each inlet. The vac wiring is connected by a low voltage circuit to each inlet as well. your hose when plugged in completes the circuit when you turn the hose switch on. For simplicity ,I also use a coin to connect the terminals mentioned below instead of dragging the hose with you.
    Reinsert the hose with the tongue or cord at 12 o clock or 6 o'clock position. If the vac does not start, rotate the hose cuff to 3 oclock.This over rides the hose handle switch to test the vac circuit.
    if the vac still does not start you have a loss of LV signal in your wiring. You will need to back track to make sure you have continuity from the vac to each inlet.
    if you have colored alarm or telephone type wire, it is very easy to break a wire strand while fastening so go back one connection at a time and inspect.
    If you have no power to any inlets,your problem will be in the main run of wire from the vac, likely to the first connection. If you have power at only some inlets, your issue will be at one of your wire junctions, either at a pipe intersection or where two wires meet at an inlet, depending on how the system was wired.
    Post back to say how you are making out

  • Chemist1961 Sep 29, 2009

    When a builder roughs in a central vac, it is normally done in one of two ways, often by a sub trade not a pro installer.
    It can be wired in a series where each inlet runs with a wire heading onto the next, in which case several of your inlets will have two ore more wires,this is visible when there is only one wire at the furthest inlet from the vac but, two wires at each successive inlet heading towards the vac.
    Or you may have parallel wire runs where each of your inlets has a single wire or more running to a junction in a common area, often the basement at a pipe intersection where all wires would be spliced together.
    It is not uncommon to have missed a second wire inside a wall while attaching the first to an inlet, look for that wire at each inlet, just in case , especially if you see two wires together in more than one location. If you are running with colored wire be sure you have paired identical colors.
    It sounds as though you finished the basement and connected the final piping yourselves. Very likely at the area where you added the last inlet, you will find a matching tail of wire hanging from the basement ceiling at or near the pipe. A good installer will always run his wire against the pipe for future trouble shooting so it cannot be missed but a thoughtless one will take shortcuts diagonally to save wire, so it may be hanging nearby or tucked aside.
    The first thing you want to do is turn on at the vac itself and Quickly test each inlet for suction, then shut the vac off.
    If you have suction at each location, that means you have successfully connected all the pipes and you only need to locate the wire.If there is only a single wire at each of your main floor inlets dropping to the basement, you may be looking for more than one missed wire. This being the case you will need to return to any junction you made when connecting the final inlets and piping in the basement and look for the missing wire to tie into your wiring. If your ceiling is finished and you know the exact pipe drop location, you can cut in a speaker grille or cold air return and no one will be the wiser, but undercut your hole just to be safe.
    If you are patient and replay with detailed updates , I will gladly walk you through this step by step, but please be specific if this is ongoing as I will be checking in daily.

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http://geeksquad.fixya.com/ThreadView.aspx?prdid=0&thid=567634
Generic problem for all Vacuums
I have a 3 year
posted by patfitz on May 03, 2008
I have a 3 year old NuTone CV 353W central vac system and recently the switch on the hose handle does not turn the system on from any outlet in the house. I have to plug the hose into the outlet and then turn the unit on from the switch on the canister. Any help would be greatly appreciated. Thanks

Hello,
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http://nutone.com/ Customer Service
Nutone Inc.
9825 Kenwood Road
Suite #301
Cincinnati, OH 45242
Customer Service 1-888-336-3948
Technical Support 1-888-336-6151
Thanks, Don the Vac Man
Go Ahead. Use Us.

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