Question about M&S Systems AirVac AVP1200 Platinum Series Central Vac - 12,000 sq ft Bagged Central System Vacuum

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Troubleshoot a problem with central vac - not in the vac hose

Vac sucks with full power at the canister but no suction at any of the oulets. Would not **** any of the strips of cloth from any of the outlets. Suspect the problem is in the hard white hosing that runs through basement ceiling. Seeking suggestions on ways to trouble shoot in this hosing, not the vaccum hose.

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The only thing you can use really is a plumbers snake.
Not sure if thats what its called in the States. Its a long flexible metal spiral spring that plumbers use to clear blocked drains

Rob in the UK

Posted on Mar 07, 2009

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Posted on Jan 02, 2017

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I sucked up some toilet paper in my central vac, and not it has almost no suction. How do I remove the block?


Toilet paper shouldn't clog a central vacuum system. There was probably already something in there that caught the toilet paper and made it worse. Here is a good resource that might help:

How to unclog a central vacuum system

Nov 06, 2009 | M&S Systems AirVac AVP1200 Platinum Series...

Tip

How to diagnose a clog in your Central Vac and how to remove it


Symptoms of a clog
Low Suction/No Suction
No suction at Inlet

Tools required
Wet/Dry Vac or vacuum with decent suction and a hose
Phillips Head Screw Driver
Metal Coat hanger (straightened out)
Flashlight

First things, first, make sure your canister is empty at the unit. I know, most people would have already checked this but I have been to a lot of client's homes and this was the issue. They were full or almost full. So just check it before you go to do anymore diagnosing. I suggest emptying it anyways, this way you can see what you clogged in your unit

Now if your machine has a utility valve on the unit turn on the manual over ride switch on and lift the utility valve and if you have suction your machine is fine, you have a clog. If you have no suction or poor suction
-Canister not attached properly
-Filter clogged
-There is a disconnect of pipe within your walls (I've seen it and it renders your system useless and is going to be expensive to repair the system)
-Your motor is going in your system (Your vacuum should sound like grinding metal and chances are it's throwing sparks and smells of burning electrical, turn the unit off immediately and unplug power cord) Your unit will need a new motor or you will need to replaced the whole unit. Sometimes can be cheaper to replace the unit.

So now back on track here, we are going to say the vacuum has great suction and is running smoothly.

Check your hose for clogs, easiest ways are to plug the hose into the utility valve and turn on the machine manually at the switch.
If you do not have a utility valve on your unit (this is where the other vacuum comes into play) plug your central vacuum hose on the end of the shop vac hose. Most hoses are standard and slip right on over the end of a shop vac's hose end (1 1/4 inch end). Turn on your shop vac and feel the suction at the end. It may not be as powerful as your CV but it should be comparable.

If the hose checks out to be free and clear we have a clogged system.

Now lets move to the inlets throwout your home, first we are going to plug our hose into the inlet that is nearest to the unit. If there is little or no suction we know there is an issue either in the distance between the nearest inlet or there is an open/broken valve.

Open/Broken valve (CV will not provide optimum suction with a open/broken valve)
-Plug the hose in and activate unit
-Check all inlets for proper seal, you will hear an annoying whistle or you will hear a gust of air from an improper inlet door closure. (Do this as quick as possible, if it is a clog you are putting strain on your motor, but if you vacuum on a regular basis chances are you know if there are whistling noises or missing pieces of an inlet. If you are missing an inlet door, replace the inlet. If all is checked out to be good, lets go back to unclogging again.

If there is suction at this inlet you know there is no clog between this inlet in the unit, try all inlets from nearest to farthest away. If you try your next inlet and have weak to no suction you found your point of a clog. This is where you will start to unclog your unit.

Take the hose end of your shop vac and insert it into your inlet. Turn the shop vac on and remove the hose quickly to create a seal and lose a seal. You should start to hear items moving through the line.

Now take your CV hose and insert it into this inlet, activate your CV and check suction if there is more suction, your slowly making progress.

Take a flashlight and look into the inlet to see if you can now see the obstruction. If you can, get your coat hanger out and go fishing. It may be easier to remove the inlet from the wall. Your basic valve is safe to remove. If you have a supervalve, do not remove, there is high current installed in the upper portion of the inlet for your power nozzle.

Repeat the Shop Vac suction and stop and the CV suction and stop until you clear your items.

This is going to take a few minutes of tugging between two vacuums. Eventually it will free if it went in, it has to come out. At the end of the day your basically playing tug of war between your Shop Vac and CV. But if all goes to plan, the clog will end up in your shop vac or in your CV unit.

Good Luck!

on May 13, 2014 | Vacuums

1 Answer

The power will not come one remotely!!


The reset is not the problem. If you have suction at the vac itself , but no elsewhere., you have blockage in your main line, or your hose. Try dropping a coin thru the handle of the hose and shake it all the way thru the other end. If your hose is clear the obstruction is in your piping. If your hose is clogged you must back out the blockage by sucking it back thru the handle.
Go to each inlet with a coin and touch the contacts inside the throat of the inlet...., 2 little brass spring loaded pins. If you can feel suction move on one inlet at a time. If you have no suction at any inlet your blockage is in the main line. If you have suction at some inlets , your blockage is in a branch. Try to pinpoint the closest inlet to the vac where you have no suction. Then put another vac like a shop vac up to the inlet and **** the blockage back out if possible. ..What wedges in must back out the way it went in. Post back with more info if this doesn't work

Sep 09, 2009 | Broan-NuTone CV350 Performance Bagged...

1 Answer

Every time I turn vac on with hose attached the canister sucks in on itself. the hose is not plugged


Try it with no attachment or nozzle on the end. If it sucks the hose in on itself then, you'll be wanting to check that hose one more time. Pass something with a larger diameter through it. I'd try 3/4" PVC pipe or something like that. Another alternative is to place the hose on the exhaust of the canister and try to blow it out. Yet a third possibility is to reverse the hose on the suction side and **** through the hose backwards.
Best regards, --W/D--

Aug 08, 2009 | Shop Vac 925-09-62 QSP Plus Wet/Dry Vacuum

1 Answer

Central Vac will not turn on.


These problems are nearly exclusively caused by a bad circut board and replacing it is the fix. Bad boards can cause many different effects so its nearly impossible to be sure. The 9v signal wire is not enough to short out an entire unit so it is unlikely the hose. If it is a direct connect system and you are pulling power from the 110 somehow that would cause main unit problems but that is unlikely at best. Sounds like a failed board to me.

Best of Luck

Jun 04, 2009 | Easy Flo EF1400 Central System Vacuum

2 Answers

Decreased suction


you might have a clog, to try and unclog the lines, you need to unplug the unit, and remove the bag compartment. Then take a shop vac using the hose attachment hold it into the attachment door where there is low suction and try to draw the clog out the way it went in.

May 09, 2009 | Broan-NuTone CV353 Central Vacuum

1 Answer

Belt needs fixed after sucking up a soft rug.


if its a canister model there probably is no belt just suction.open the canister and if it has a bag feel the bag ,if it feels kind of hard then the bag is full.take the tool off the end of the hose and turn it on to see if you have suction if you do then the tool is blocked up.take it to the sink and run some warm water through it and maybe use a little brush to clear out the dirt.full bag will cause your vacuum not to have suction or not as much as it should

Apr 09, 2009 | Kenmore 23612 Progressive PowerMate Bagged...

1 Answer

Kenmore canister vac 25614


Have you checked and made sure that the hose is COMPLETELY clear and the bag is not full?

Feb 13, 2009 | Kenmore 25614 / 25615 Progressive Bagged...

1 Answer

My central kenmore vacuum wont suction


Hello hdd85,
I think you answered your own question when you verified that all the vacuum outlets have vacuum on them and then after you hook up tyhe vac hose, you fail to get vacuum at the other end. I would say that based on your problem description, you have an obstruction in the hose. You may have afriend with an air compressor that you can try forcing air in one end to free up the clog but if that doesn't work, do you know anyone with a wet/dry utility vac that you can try using the vacuum or exaust side to free the hose up ? Lastly, if you know an electrician, they normally have 'snakes' used to fish wires thru wall cavities... If careful, that might get the clog out.. Hope that gives you soem ideas on how to resolve,,,,
Regards,
Rick

Jan 26, 2009 | Vacuums

1 Answer

Shop vac sucks water for a few seconds then it spits it back out


Don't use the paper filter for sucking water. It can ruin it. It will still be usable if you just set it out to dry but there is no reason to use it for water in my experience. I have a sears shop vac and it will fill up more than half full without ejecting the water.

Dec 22, 2008 | Shop Vac 925-13 Canister Wet/Dry Vacuum

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