Nutone CV353 does not shut off, think it is the relay board
I have a Nutone central vac model CD353 and the unit does not shut off, I have disconnected the yellow wiring for the outlets it still runs and then the switch on the unit and it still runs so I am thinking that the relay is not shutting off the unit. So I am trying to see if I could buy the relay because it looks easy to change (just disconnecting and connecting the wires). Does that sound like the problem or could it be something else I should test. So looking for some advice
Re: Nutone CV353 does not shut off, think it is the relay...
You probably have a stuck relay. You
can try tapping with medium force next to where the low voltage wires
are attached to the unit using the handle end of a hammer. Even if this
works it's time to replace the circuit board. Take the unit to a local vacuum repair center for service.
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You have a defective internal relay on the vac. Check for warranty coverage as this is a common occurrence on these big box store units. If beyond warranty the relay should be a straight forward unit, miniature circuit board type plug in device. Find a Broan Nutone service center or take to vac pro shop for parts.
Disconnect the thin low voltage wiring between the vac and the rest of the house. If the vac continues to run you have a defective relay in the vac motor housing. If the vac stops you have a short in the wiring in the house, likely behind an inlet in the wall. If any inlets have been disturbed for painting or renos lately that would be the first spot to look in the house for a problem. Look for wires behind the inlet valve which are touching against each other or a mounting screw or against a metal mounting plate behind the inlet. Start at the last inlet used. Be careful not to loose the spring under the screws where the wiring attaches to the inlets
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
If the central vacuum tank will not turn OFF even with the switch in the “OFF” position, then the low-voltage wires should be disconnected from the tank.If the tank continues to run and still will not turn off, then most likely the relay inside is defective (but it could be a defective and/or shorted ON/OFF switch). If with the low-voltage wires disconnected the tank is able to then be turned off with the switch, then there is a short in the low-voltage wires or a hose is plugged into an inlet somewhere. ~ TTURAMBAR
Try to plug the hose in sideways. So the top of the hose is rotated 90 degrees. If the unit turns on then there is something wrong with the hose. It might be a short or it could be a bad switch on the handle. If the unit still wont turn on I would think that maybe the low voltage wire got disconnected from the unit or there is a break in the low voltage wire somewhere along the way. Let me know if you plugging the hose in sideways works.
If the central vacuum tank will not turn OFF even with the switch in the “OFF” position, then the low-voltage wires should be disconnected from the tank. Once this is done, if the tank continues to run and cannot be turned off with the switch, then most likely the relay inside is defective and needs to be replaced (but it could be a defective and/or shorted ON/OFF switch). If with the low-voltage wires disconnected at the vacuum tank, it can be turned off with the internal switch, then either there is a short in the low-voltage wires, or else there is a hose still plugged into an inlet somewhere. ~ TTURAMBAR
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, I would advise you to ALWAYS to FIRST UNPLUG YOUR VACUUM before beginning any service procedure. There are a couple of things that come to mind, 1st. you may have a bad switch in the hose and in most cases that can be repaired – if not you would have to purchase a new vacuum hose. 2nd. You may have a bad inlet valve in your hose and most of them are low volt of which would only cost less than $10.00 and can be replaced yourself unless you have what they call a SuperValve of which has 2 low volt wires and then it is wired to your home electricity and that should be replaced by an licensed electrician. It is a low volt and high volt inlet. #3. the last thing you may check id that you may have a bad relay in the canister itself. Because you should be able to turn on the Central Vac with the switch on the hose and everything should work just fine . feel free to contact your local vacuum cleaner dealer in your area of call the Nutone Factory cust serv line for further assistance. So if you need further assistance, please feel free to contact your local vacuum cleaner dealer in your area or in the yellow pages, or contact the factory phone number or website to further assist you with your questions. http://nutone.com/Customer Service Nutone Inc. 9825 Kenwood Road Suite #301 Cincinnati, OH45242 Customer Service1-888-336-3948 Technical Support1-888-336-6151 Thanks, Don the Vac Man Go Ahead. Use Us.
http://www.geeksquad.fixya.com/ThreadView.aspx?prdid=0&thid=539794 Generic problem for all Vacuums No suction on lower level Posted by phil55555 on Apr 23, 2008
Nutone central vac no suction on lower level second floor fine ran fish tape but it does not go all the way through, do i need to take pipe out.
Hello, I would advise you to ALWAYS to FIRST UNPLUG YOUR VACUUM before beginning any service procedure. Not @ first, try to get a central vacuum cuff and go to each and every inlet / outlet down the basement and put the cuff in the inlet – the central vac should come on and possibly might unclog the pipe, 2nd, try taking another canister type vacuum while the central vac is running and open the inlet door and try to “pull apart the clog in the pipe” – this does work upon occasion if not you can try a plumbers snake – but be careful because the walls of the pvc pipe are thin wall and you don’t want to poke a hole in the pipe or other wise you will have to replace the pipe. The absolute last resort should be to replace the pipe if all other do not work. Feel free to contact your local vacuum dealer in your area or in the yellow pages , or contact the factory @ the phone #’s listed below: http://nutone.com--- Customer Service NuTone Inc. 9825 Kenwood Road Suite 301 Cincinnati, OH 45242 In U.S.A. call: 1-888-336-3948 for Customer Service 1-888-336-6151 for Technical Support
In Canada call: 1-888-882-7626 Thanks,Don – The Vac Man Go Ahead.Use Us.