TroubleShooting Inlet Valve Issues Q&A
Air Flow Issue.
Question:
I have a Hoover central vac that I have installed. Everything is working except the exhaust is pulling in and the intake is pushing out. How do i correct this? Joanne in Winnipeg, MB
Answer:
The pipes are switched. Connect the intake pipe to the port where the air is going in, the exhaust pipe to where the air is going out.

Air Leaks
Question:
Suction seems ok at hose end (beam system (15 yrs) motor replaced 5 yrs ago) but not as good at beater bar end - do these wear out? I\'m hearing a lot of noise and think air is escaping around the fittings causing loss of suction. Is it normal to hear a slight \"air\" noise from the unused outlets when CV is operating - or should these be changed to provide a good seal? Thx! Jim - Winnipeg, Canada
Answer:
There will be some leaks and they do matter. Try to fix them and replace your hose. If the faceplates are leaking remove them and put a wrap and a half of black electrical tape on them and reinsert. Do not over tighten.

Beam 225A Power Shuts Off
Question:
When I insert hose in outlet on my 2 year old Beam 225A Classic Series, power comes on then cuts out after running for about 2 seconds. If I remove hose & push in again after a few secs. power engages and shuts off again. When unit is turned on manually at canister, green power light goes on but power cuts out same way so don't think it is a problem with connection at hose end. I checked all electrical connections-can't see any break in wires that would cause shorting and all brass contacts in inlets are exposed and appear functional. Breaker is working fine as light and receptacle for connection to beater bar on same circuit are functional. I'm stumped.
Answer:
The problem is not with the hose, your motor is failing and needs to be replaced. You can find the correct replacement here, http://builtinvacuum.com/help/beam/motor.html#motor 

Child-Safe Inlets?
Question:
Hi! We have an air-driven central vacuum system with 1.75 inch tubing. Our outlets turn on when opened and so, are not very child-safe. We'd like to replace them with outlets that need to have the vacuum hose plugged in in order to turn on. What would you recommend ordering for each outlet? Would we need a new hose? Thank you!!
Answer:
Most systems do not start when the valve door is opened, so having the type that do start when opened can be a concern. The closest thing to child-safe valves are ones that do not start when opened. There are not currently any locking versions of central vacuum wall inlet valves. The question for your home, though, is if you are able to change the valve cover to ones that do not start when opened. You may have the type that are not replaceable. If the suction hole under the door is less then 1-7/16 inch diameter you will not be able to swap them without a lot of hassle. See our video regarding this here http://builtinvacuum.com/help/kenmore/videos/index.html#replaceinlet.

Cover Plates for Valves Not Used?
Question:
I have an existing central vac system, with old dated wall inlets that are in poor condition. I would like to find out what inlet covers fit the system. It is probably quite old (1960's?). Brand is Magic Vac. Hose diameter is 1.5" at the inlets. 2 screws secure the cover to the wall box, one at the top and one at the bottom. 4.25" apart. I am looking for replacement inlet covers (white) as well as cover plates for wall inlets that are no longer in use. Thanks, Jason
Answer:
As long as the backing plate hole diameter is 1-5/8" inches you can use any of these Basic Inlets http://builtinvacuum.com/inlets/basic.html. There are not blank inlets for valves not desired because that valve still needs to seal under pressure.

Electrical Hose Troubleshooting, Fuse, Shorting
Question:
William, Cary, NC. Beam model SC225c. Switch on hose handle turns on vacuum normally. Rugbeater will not run- started suddenly while vacuuming.No power with test light at plug beneath the handle.How do I check for fuse?? washearin@nc.rr.com
Answer:
We have electric hose troubleshooting here http://builtinvacuum.com/hoses/electrichoses-tech.html, but it may be the connection at the handle to vacuum head cord. Hold everything real still and wiggle, turn, and pull on each connection point to find the short. The fuse in the hose is on the wall end molded into the electrical plug. Test continuity under the wall end cuff. See videos.

Extension Needed for Thick Wall or Longer Reach
Question:
I have just bought new low voltage inlets to replace old ones that were leaking. Also bought the trim covers for the more streamlined look. Problem is when I install the trim cover, the inlets don't have an adequate connection to fit firmly into the existing wall tubing. Is there a way to extend the inlet connector via a piece of smaller pipe? Thanks. Christian in Boston
Answer:
Yes, there is the Inlet Valve Extension made for this issue. It bridges the gap between the inlet neck and the backing plate in the wall. If it is too long it can be cut, if it is not long enough multiple can be used. Also beware that the screws may  need to be longer too but you'll have to pick those up at a hardware store. Here is the Extension http://builtinvacuum.com/retail/shopretail.php?part_no=614

Fix Air Leaks
Question:
fitted 3 new inlets for beam but these leak when we put hose in an original inlet
Answer:
Is it not difficult to fix an air leak. The cause is the seal is old and weak. Applying 1-1/2 turns of electrical black tape on the neck before reinserting will do the job. We have a video on fixing leaking inlet valves here http://builtinvacuum.com/cvtv/tips/fixing-valve.html.

Four Wire, Some Inlets Not Working
Question:
Hi, I have a question. The builder's rough-in includes 4 wires: red, green, yellow, and black. I've googled the wiring and some posted that you could pair up the wirings (red/green and yellow/black) together, others suggest to use only two colors consistently. So far, I am able to make one inlet work - the one nearest to the garage. The vacuum is working fine when I plug the hose to this outlet, however, all other 4 outlets are not working including basement even if I'm using consistent wiring colors. Could you please help me? Thank you!
Answer:
Yikes, that is not good. Can you run a continuity test so be sure the wires do not have a break in them at the valves that do not work? If there is continuity then you'll need to boost the signal to these wires by putting a low voltage booster box at the vacuum main unit. The thin wire is not cutting it and needs help. Use this part to get the job done http://builtinvacuum.com/retail/shopretail.php?part_no=140LV. And keep using the same wire pairs at every inlet.

Get Shocked?
Question:
I have a Vacu-Flow model 26, with one outlet not working (the electric connection only). If I check the wiring at this one outlet, are they low-voltage, so I will not get a shock? Or do I need to cut the power before I mess with the wiring? Thanks, John Hartford, CT
Answer:
Low voltage wiring will not shock you. If you see romex, or regular home wiring you will need to turn the power off to that section of the house.

Have to Jiggle to Work
Question:
We have NuTone Central Vac Model 350 (approximately 30 years old). Has worked well until recently. When plugging hose into inlet, unit does not start unless hose is jiggled. Today it will not work in any inlet. Age of vac?, replacement of all inlets? Help! Sandy Dover, DE
Answer:
Hi Sandy, aren't central vacuums awesome in so many ways! Let's see what the issue with your vac is. Please use this guide to find what's up and what to do about it www.builtinvacuum.com/flowchrt.html. If you have any questions let us know.

High Pitched Noise
Question:
After just a few minutes of use my cenral vac makes a loud, continuous, high pitched noise. The noise is not coming from the power unit, which is in the basement. The power unit is a MD system, looks fine and works well, but the noise is annoying. Do you think the problem is in the hoses or could it be in the pipes? Is there an easy way to check? Thanks! Elaine, Statesville, NC
Answer:
The aerodynamics are causing this. The pressure has changed and blended perfectly with all the parts and things of the air travel channel. Try changing your filter to mix things up and resolve the issue.

Hoover S5673 won't turn off
Question:
Hoover S5673 Central vac. The motor will not turn off. Following your troubleshooting chart, I have already disconnected the low voltage wires that connect to the motor module controls. FYI, I have three wall inlet valves in the house. The motor continued to run even after disconnecting the low voltage wires. My question is about item A for item #9. I must be dense, but what does the following mean? "Directly isolate low voltage leads alone (disconnect all auxiliary switches)". Steve Edgewood, WA
Answer:
Hi, that means to make sure the low voltage wires are not being ran through a manual on/off switch within the unit. The switch may have a short. Also, we are finding that it is not too uncommon for a relay to be shorted.

Hose Not Working In The Inlet
Question:
We have centralux central vac. We have 2 hoses. With one hose all the outlets work fine, but with the other hose you have to turn and jiggle it to get the system to turn on. It seems like the metal band is not making good contact???
Answer:
This might just be an issue of dirty contact points in the inlet or hose.  Try cleaning off the metal band on the hose and the metal contacts inside the inlet opening.  The clean surfaces will make better contact.

How to Insert Hose that has an On/Off Switch
Question:
I have a beam 294 system. The vac will turn on and off by twisting the connector right or left. The switch on the handle will turn it in and off only after I have played with connector some. Is there some rhyme or reason to how this thing works? We are new to this home, Steve Searcy, AR
Answer:
Thank you for the question and we hope you enjoy your new home and cleaning with a central vac. When you plug the hose into any wall inlet be sure the plastic rib separating the two metal halfs is at 12 or 6 o'clock. That will let you control the suction at the switch on the end of the hose. What it is doing it is separating the low voltage connection. When you rotate the hose end in the wall valve the suction starts when both contacts inside the valve rest on one or the other metal plates together.

Howling Noise
Question:
What would cause a howling noise after vacuuming for about 10 minutes? Our Filtex central vac doesn't seem to have a model number although VC225 is imprinted on one of the pipes. Our house was built around 1960.
Answer:
If the howling noise is inside the house then it is coming from the hose. The air dynamics have changed do to age, filtration, etc. Try changing the filter or cleaning it out to see if it makes a difference. If the noise is from the vacuum unit itself in the garage or basement then the motor is probably going bad. Use the vacuum until is stops working, you will be fine.

Inlet Noise
Question:
We have a three story house. When we plug in the hose into any inlet there is noise from one inlet in the basement. This happens when we are vacumming the first and second floor is this normal?
Answer:
This is not normal operation for an inlet.  Over time inlets can be damaged and worn and need to be replaced.  We offer inlets in three different colors (white, ivory, and almond).  If they are basic low voltage inlets, this is an opportunity to upgrade your inlets to high voltage for use with a powered electric floor brush.

Inlets Not Working
Question:
Eve - Ottawa The inlets aren't working all of a sudden. Only way to vacuum is to turn on the main unit (in the garage). Any ideas?
Answer:
That issue may have a couple of solutions. Please use www.builtinvacuum.com/flowchrt.html to figure it out and let us know if you have any more questions.

Jiggle Hose, Connections Look Clean
Question:
When I plug the hose into the inlet, the unit usually does not start up. I have to turn the hose, jiggle the hose, etc before the unit starts up. Looks like the connections are clean. What can I check next? Marty from Huntington
Answer:
The connections inside the vacuum port hole may be clean but may have lost their spring. The inlet should be replaced.

Kenmore Valve to Standard Valve
Question:
Can I change a 1977 Kenmore low voltage valves 1 1/4" opening to a air driven 2009 valves? What parts do I need? Thanks Greg
Answer:
Greg, unfortunately that is one of the most difficult things to do in our industry and too difficult to go through here. We do go briefly through it in our Kenmore video page here: http://builtinvacuum.com/help/kenmore/videos/index.html

Kitchen Dust-Pan Opening Up
Question:
Hi! I have a Beam central vac about 6 years old. When I use it from any inlet, including just turning on the main unit, my kitchen dustpan opens slightly and sucks a small amount of air through. It decreases the suction everywhere else. If I push the dustpan all the way closed, the unit shuts off. I have checked for clogs by running a tissue through all inlets including the dustpan and the tissue comes out fine from all. This just started happening a few weeks ago. Any suggestions? Thanks, Tonya Belleveille, IL.
Answer:
You may want to use the VacPan repair kit to tighten things up. You can find it here http://builtinvacuum.com/search.html?search_string=vacpan+repair

Large Object Clog
Question:
We have one inlet with low suction and it makes a loud whistling/squealing sound when the inlet is open and the unit turned on. I think there is an object in the tubes somewhere, because when I send a paper towel down from that inlet, it never makes it out. I'm able to use a plumber's snake to pull the paper towel back out, but whatever is lodged in there is solid, and the snake just isn't budging it. I've tried the pressure/release trick using my hand many many times, and nothing. I've tried vaccuming out the object through the inlet, and nothing. All other inlets in the house work great. Is our last hope simply pulling the pipes out of the wall and cutting them open, or is there another trick we can try?
Answer:
Hopefully you can access the pipe in the attic or basement. Measure how many feet the tape went in to get the towel and you'll know about where the clog is. Cut about 2 inches from the turn where you think the clog is and use a coupling to put the pipe back together.

Leaking Air at Inlets
Question:
When I moved the hose from one outlet to the other, both outlets started pulling air. When I tried a third outlet, all three pulled air. I unplugged the motor and plugged it back in but all three still pull air. The covers are tightly closed. The unit is only 4 months old. There isn't enough suction to vacuum. Tricia Durham, NC
Answer:
It sounds like the inlets are not flush with the inlet doors. If they leak then please back off on the two screws until the door is flush. Screwed in too tight, the inlet will bow in and air will leak.

Leaking Inlet?
Question:
I have a full-face inlet. I hear that there is hissing noises inlets that are not used (when the cover is on). Could it be that there is air leakage from the cover point? If so is there solution?
Answer:
Thank you for asking. The leak is at the door or at the gasket in the backing plate. First check the door. The door must be flush with the frame of the cover, which must be flush with the wall. Loosen or tighten the screws to make adjustments and lightly pound the center of the cover if you need it to go in more. If that doesn't solve the leaking issue then remove the inlet cover from the wall and put a wrap and a half of electricians tape and put it back in. Take a look at the how-to video on this here http://builtinvacuum.com/cvtv/tips/fixing-valve.html

Loud Squealing Sound At The Handle
Question:
The hose/floor attachments in my AirVac ZX7000 makes a very loud high pitched squeal when operating. It is painfully loud and often intermittent when vacuuming rugs but more consistent on hard wood or when off the floor completely. I have tried opening the flow valve on the handle and that sometimes helps but not often. What is the cause of this squeal and how do I stop it? It seems worse from some outlets than others. The suction in the vacuum is very good. My ears will appreciate your thoughts. Linda Durham, NC
Answer:
If this sound is originating at the hose handle or the floor tool, then it's most likely a whistle being generated by the flow of air.  If the angles and the airflow are just right, you get a whistle. No quick solution for that, other than trying a new hose. New hoses are smoother inside and change the air-flow properties.

Low Suction; Unfinished Ports
Question:
I bought a house with an Aerus ysytem, probably 10 years old. I am third owner. Talked to orignial owner, said system never did "suck" well. There are two connected powered outlets. Power is there. I found two outlets that are just covered with a plastic plate, no powered outlet. Do you think these are causing leakage? There is no gasket or seal. Do you think it would help the other outkets suck better if I hooked in your standard power outlets? Power is there in the two outlets that are just covered.
Answer:
Hi, right away you want to buy inlet covers for the two without them. That is why your suction is so weak, there is too much air loss and just l little loss makes a big difference. http://builtinvacuum.com/inlets_shop.html

New Home, One Inlet Not Working
Question:
Just installed a built in vac into a pre plumbed house. Three of the four inlets work fine, but the fourth one won't turn on at all, even if I try to short this inlet. I pluged the hose in and manually started it from the main unit, but no suction. Not sure what's going on.
Answer:
Remove the inlet faceplate from the wall and short the low voltage wires (not 110 volt wires if there are any). The vacuum should start. If it does then replace the faceplate. If it doesn't then there is a break in the low voltage line that you most likely will not be able to find. There are reliable radio frequency items available if you want to go that route. Lastly, if the inlet is really far away on the end of the house it can be a resistance issue. If the vacuum starts when you short the low voltage wires it may not be the valve that is bad but there is not enough power to go through the hose to the switch. We have a low voltage booster box you can install next to the vacuum tank to resolve this.

No Power at Inlets
Question:
What should we check before we call for service if there is no electrical current to the boxes. Checked circuit breaker, plug and all caps are down. What else should we check.
Answer:
You are saying that there is no low voltage current at the inlets? How about at the connection at the Budd unit? If not and assuming there is 110 volts going into the machine, the transformer is dead.

No Suction At Inlets
Question:
there is a lound thumping sound as we turn on our newly installed central vac system. Also there is no suction at any of our inlets, we doubt there are any clogs in the pipes as the house is brand new...and the builders installed the pipes...any tips/suggestions?
Answer:
It sounds like you have a loose pipe connection or a bad seal on the unit. Check the unit's collection bin to be sure it is fastened securely. With the unit running, walk thru the house listening for rushing air from a open pipe connection. Follow our troubleshooting guide for more tips at http://builtinvacuum.com/flowchrt.html

Not Working After Replacing
Question:
Hello, I purchased new inlet covers to replace my old worn ones. When I replaced them the unit does not work now (on either of my outlets. When I did the upstairs inlet all still seemed fine downstairs (i didn\'t test the upstairs inlet before replacing the downstairs one. I checked the mini breaker on the unit and the manual power switch. both work. I tried putting the old inlet back on, but still wont work. They are low voltage wires, so i wouldn\'t think there is a right and wrong way to hook them up to the inlet. Such a simple swap, I am baffled that something went wrong. I have done enough electric wiring before, but am completely new to central vac. It was in my home when I bought it and just got the hose, etc from you guys this week. Great site by the way! Any ideas?
Answer:
Interesting. Short the wires or connections for the wires at the unit itself to be sure the transformer and power are working. If they are then double check your connections at each inlet. As you stated the wire can go on either screw on the inlet, just keep them separated. Sometimes they are daisy chained to so look for double, sometimes triple wire leads at one inlet.

One Inlet Not Working
Question:
We had a central vac system roughed in when the house was built, 1999. It was a couple of years before we were able to finish it. There is one outlet where the low voltage is not working so we have to go out to the garage to turn on the unit whenever we need to use the one outlet and it's downstairs. What is the best way to fix the outlet? thanks
Answer:
Hi, remove the faceplate and touch the LOW VOLTAGE wires together. The suction should start. If not then can you follow the wire back to where it is connected to the other wires? If not can you run a new wire to another inlet or to the machine? If not then you will have to buy a remote control unit for a couple hundred dollars. Or, and this is kind of crazy, you can buy this hose end and put it into any inlet to start the system when you plug the hose into the dead inlet. Cover the hose end so air will not get in. http://builtinvacuum.com/retail/shopretail.php?part_no=302HCR

One Inlet Not Working
Question:
Inlet in one room isn\'t working, does it need to be replaced? If so, how do we do that? Don, Hubbard, Ohio
Answer:
Hi Don, you want to remove the faceplace and short the contacts/wire (not 110 volt, but the low voltage wire that looks like speaker or telephone wire) to see if the vacuum starts. If so then replace the inlet faceplate. If not then you have to find out where the break in the at low voltage line is.

One Inlet Not Working
Question:
i have one plug in the house that does not work when the hose is plugged in all the rest are good i have red yellow and green black together
Answer:
If your inlets are all for low voltage, no high voltage for an electric hose, then all the wires are for the low voltage lines.  Try different combinations of colors to determine how the system was wired.  When the right two are touched together, the system should turn on.  If no combination works, there may be a short in the lines leading to the inlet and you will need to have a technician inspect the system.

One Inlet Without Suction
Question:
I have an M&S system. All zones work fine, except one. When I plug the hose in that outlet, a different outlet turns on. No suction to the outlet plugged into. Thanks, Jeff
Answer:
You have a clog in that line. Use the ideas in solution #3 here to help you resolve the clog www.builtinvacuum.com/flowchrt.html

One Valve Not Working with Hose Switch
Question:
All of my outlets work, but one of them does NOT work if the electric plugs from the hose are inserted. For that one outlet, we have to twist the hose so that the hose in inserted, but not the plug. The problem is that my electric carpet attachment won't work on this one outlet. Any ideas? John, Hartford, CT
Answer:
Is it the valve farthest away? If so then the power to make the connection at the hose handle is not strong enough. There are a couple reasons that may be. If not the farthest, then remove the faceplate and be sure the wiring is securely fastened to the two screws on the back.

Pipe Joint Seals
Question:
I have small air leaks in some of my central vac pipe joints. Any suggestion on how to seal them properly?
Answer:
A little PVC cement at the joints is all you need to create a tight seal at the pipe joints.

Pipe Noise without Hose
Question:
Inlet noise (high pitched siren noise) even aftr removing the wall plate and covering with my hand; still makes annoying sound behind plate near the outlet. Whats causing it?
Answer:
If the noise is happening without the hose plugged in and it is not coming from any specific inlet cover then it is from the pipes. The balance of the air and everything, at some point during the slow down, creates harmonics. This is extremely rare. One would think that changing on part would throw it off. Try relieving some air at the tank by opening the utility valve a crack. If the noise stops then the we know what it is but not how to correctly stop it. Maybe try a different tank?

Rare Vibrating Noise
Question:
when we turn a vacuum either on or off; there is a loud vibration/suction noise -- sounds like a whale -- i cannot tell where it is coming from. It even sounded when I turned the unit on and off from the basement control unit....
Answer:
Sounds like your system is acting like a finely tuned instrument. If the noise is not coming from the main unit but from the pipes, it is usually a valve door or two that is not seating right. It is easy to fix. Each valve door needs to sit flush on its faceplate. When a faceplate is over tightened then the door can't sit flush. Most likely all you have to do is back off on the screws that hold the faceplate in. Look from the side to see which plates look bowed. Fix these and the door(s) will stop vibrating.

Some Inlets Dead
Question:
John Fort Myers I have a Nutone central vac system that is around 7 years old,When I plug the hose in to two of my ports the vac works good but when I go to the other end of the house to use it on the other three it does not work. I have checked the bag, the breakers every thing I can think of but it will not work but when I go back to the other end of the house it will work, what might be the problem?
Answer:
John, if you are saying the vacuum unit will not turn on at all on some inlets then it is a low voltage issue. If you hose has an on/off switch then try shorting the low voltage wire at the wall. If it works then the hose is adding too much resistance. Insert the hose and turn 90 degrees and all is well. If it will not work at all then the low voltage line has been compromised and you will have to buy a remote control unit. If you are saying it comes on but with little suction then you have a clog. See solution number 3 here www.builtinvacuum.com/flowchrt.html

Some Inlets Not Activating The Unit
Question:
All of my inlets except for the kitchen will not start the unit in the garage when I open the inlet door. The suction was weak at first now the unit will not even start. I thought I had a clog at first so I manually started it with the switch on the unit and the unit has suction on all the inlets so no clog is present. What would make the inlets get weak suction one day and not even start the unit the next? Mind you the kitchen still works fine. Norbert Ky
Answer:
If only a few inlets are not activating the unit, then there is a break in the low voltage wires in the wall.  You will need to locate the break or have a technician repair it for you. You can find your local dealer here http://builtinvacuum.com/dealers.html

Suction Gone
Question:
We have a central vacuum (not sure of the brand). It usually runs very well but currently when we plug the vacuum into one inlet it is another inlet that is working. When we open the inlet door to the one without the hose there is a suction. What could this be? thanks, Christine from Chatham, Ontario Canada
Answer:
You have a clog in the hose or the pipes. Please use this guide for help www.builtinvacuum.com/flowchrt.html.

Suction Loss in Some Inlets
Question:
I have 4 plugs the one in the second floor works, the one on the first work the second plug on the first floor is not working and the one in the basement is not working. Both of those plug are connected by one pipe they stopped working about a week ago what can I do to fix it
Answer:
Please try the solutions for unclogging a pipe. They are under solution #3 here www.builtinvacuum.com/flowchrt.html

Suction Only at One Wall Plate
Question:
Hi, I installed a new Electolux central vac system today. The powerhead unit for carpets works off every outlet, but the head for wooden and tiled floors will only work from one outlet. Can you help please? Many thanks, Ian Model: Electrolux Oxygen ZCV900
Answer:
You only get suction from one inlet? Then you can't use the carpet brush on any inlet except the one with suction or you'll clog your vacuum head and wands since no air is in the others to take away the debris. On the ones that have no suction, use tin foil to short the metal nibs INSIDE the 1.5 inch wide hole. See if the suction starts. If so, then you have a low voltage strength issue (did you use 20 gauge wire?). If not, then you have a low voltage break, or forgot to make a splice or do one correctly down stream.

Switch Not Activating Vacuum
Question:
Have a Zenex model 275, we have two inlets and the hose does not work properly in either, when we plug it in straight it does not turn on, but if we twist it on either to the left or right slightly, it turns on. The switch on the hose does not turn it on or off, we have to untwist the hose to turn off. Is it the switch?? Thanks Barry Templeton, MA
Answer:
Yes, the switch is not activating the vacuum and need to be replaced.

Switch Operation
Question:
Hi, just installed a kenmore. Replacement for an old unit. Everything works as far as suction at valves when hose is plugged in. The issue I have is that the handle that at the far end of the hose that connects to the powered brush has a 3-way switch that I believe is for 1. left position;suction on/brush head motor off, 2. middle position; suction off/brush head off and 3. suction on/brush head motor on. The issue is that in the middle or no.2 position the suction stays on. All of the inlet valves have two point contacts. Wondering why I can't turn vacuum motor off with handle swith in the middle position?
Answer:
First, be sure that the hose is in the correct position in the inlet. If your hose has a cord, the portion where the cord connects to the hose should be pointed straight up or down to use the contacts. If this is all okay, you may have a bad switch or a short in the hose.

Two Ports with No Suction
Question:
My central vac system ( A.B.C. Vac Co.) 4 inlets, the two closest to the unit do not have suction, the other to do. One did work when previous owners were showing home. Never use the system until now. I only cleaned the catcher can. What would make these two inoperative and the other two operative? Are they on a different pipe line? Piping runs under house (5'-6' access). I read a low voltage is use. (connection) Do I need a new inlet box? Help me Rick Lee Rescue CA
Answer:
Hi Rick we have tips and solutions under number 3 on this page http://builtinvacuum.com/flowchrt.html. That should get the job done.

Unit Will Not Turn Off
Question:
Hi we just installed a new firgidare vac system last night in our new home so everything was already done within the walls, we only had to install the unit and inlet plates and when you plug the hose into the wall it starts to suck (so constant sucking) and I cannot shut it off at the hose handle and it does this with all the inlets. Also, is it normal for a vac system to be loud enough to hear from the third level(it's located in my basement). Thanks, Derek Calgary,Ab
Answer:
If your inlets have only one contact inside the main hole, then the switch on the hose cannot operate. If your inlets have two contact points inside the main hole, then the switch should operate just fine. If it is not turning off when the hose is removed, there could be another wiring issue. Follow our troubleshooting guide to narrow down the problem at http://builtinvacuum.com/flowchrt.html

Unit Works, Valves Don't
Question:
If I've connected the two contacts on the hose inlet, but the suction unit does does come on, what is the problem? I can turn the suction unit on manually from the main switch on the vacuum unit.
Answer:
Short the contacts at the unit that the wires are connected to. That should start the vacuum. If it does then your wires are broken somewhere in the home. If it doesn't then your transformer is not working.

VacPan Clog
Question:
Hello, This is Lisa I live in Des Moines Iowa area. In my kitchen I have a inlet in my island to sweep the dirt right into. It has stopped suction. The unit comes on but no suction. I took out the screws to tak out the plate but I can not get it out. I can not put a snake in. I can not seem to get in to see what is stuck. What do I do? Thank you
Answer:
With the unit turning on but no suction, there is most likely a clog. If the pipe line cannot be accessed, you will need to call a service technician to remove the obstruction. You can find your local dealer at http://builtinvacuum.com/dealers.html

VacPan Kick Valve Stopped Working
Question:
My central vac is working great throughout the house but the kitchen sweep dustpan. Was working yesterday but when pushed to the open side to turn the vacuum on there is no response. How do I go about finding the problem and fixing? Bryan caldwell ID
Answer:
Most of the time, this issue is the kick lever or moving parts fail. We have VacPan Repair Kits that make the job easy and saves money. To remove the VacPan it should pull straight out of the cabinet AFTER you access and remove the PVC elbow. Access is from above through a cutout in the cabinet base, or underneath by a cutout access. Here is another link to the parts http://builtinvacuum.com/retail/shopretail.php?part_no=670PWRK,670PARK,670PBRK

VacPan Toe Kick is Loud
Question:
I installed a Plastiflex Sweep Inlet Valve. It works but the suction noise is extremely loud... almost unbearable. Any suggestions would be most appreciated. Peter, London ON
Answer:
The way air rushes into a VacPan can be quite loud depending on the power of your central vacuum system. Unless there is another inlet valve open all the air will be forced into that VacPan and be loud in this case. 

VacPan Will Not Start Vacuum
Question:
my automatic dust pan will not start my central vacuum. What is the problem?
Answer:
Check the wire connection behind the dust pan, make sure the wires are connected. If that looks good, touch the wires together. If the vacuum turns on, the dust pan is bad and needs to be replaced. If the vacuum does not turn on, the wires in the wall are bad and you'll need to locate the problem in the wall or call a dealer for assistance.

Valve Hums After Usage
Question:
One of the inlets makes a vibrating hum for a few seconds when hose is unplugged at any of the other inlets. Is there a problem of leakage? Thanks for helping. Connie from Normal
Answer:
The hum is not a problem. As the lines lose pressure a valve may open a bit and the gasket may vibrate. If the valve was vibrating or whistling while the system was on then that would be a pressure leak. Either way, it is solved by screws the faceplate in tighter or loosening it. The goal is get the lid flush with the faceplate. Pushing on the center of the faceplate may help too.

Water in Inlet
Question:
In one of the outlets we keep having water collect in it. It shorts out the system and makes it run constantly so we have to unplug it when not in use. We use a humidifer in the room do you think that is the cause? We have checked in the attic for any water leaks none found. Please help Sarah in Pea Ridge
Answer:
If it is that consistent then it is usually condensation. The vacuum pipe is going from extreme temperatures in the basement or attic, or where ever. Insulating the outside of the pipe can help decrease this, and the more insulation the better.

When Unit Is On, There Is Sound Of Air In Inlet
Question:
Air Vac system. Hi I have a problem with a air inlet it sucks air. I have a three story house and when we turn the unit on, you can hear air sucking from the inlet. Is this normal or do I need to replace inlet?
Answer:
This is due to a bad gasket on the inlet allowing air to enter when not in use. It needs to be replaced. The air leak is lowering the suction power of the system.

Wiring a 110 Volt Inlet
Question:
I have identified that all of my operating valves are supervalves. I will be ordering two more soon to fill in two inlets that have a fake plate over them, but are wired and definitely connected to the system. My question is, with a supervalve I would expect to see two little low voltage wires and an electrical romex wire with ground. I see four little (low voltage) wires behind the supervalves. All of them work, however the hose DOES NOT plug in to the little holes at top of supervalve. When hose is inserted, the unit can be started from wand, however the hose cord is plugged into a regular outlet to run powerhead. Does wiring the supervalve with 4 low volt wires make any sense. I cant imagine theres full 110 in two those little wires.
Answer:
Hi, the four smaller wires are all low voltage. They didn't run romex but they should have to utilize the inlets. All the wires you see need to attach to the two screws on the faceplate. Keep paired wires separate. Ignore the wires on the faceplate, you will not be use them because there was no 110 volt wire ran.

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