Question about Pentair 011516 WhisperFlo FullRated Energy Efficient Pump 3Horsepower 230Volt

1 Answer

Suction on vacuum is low, pressure in filter is low and pump appears to be louder then normal what's the problem

Posted by on


1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that got 5 achievements.


    An expert who has written 50 answers of more than 400 characters.


    An expert whose answer got voted for 20 times.

  • Expert
  • 116 Answers

If pressure gauge on filter is low, then most likely problem is obstruction is suction side of plumbing, which includes a clogged impeller. double check impeller, this can be hard to get to without unbolting the two halves of pump, separating the two, and removing the diffuser so that you can fully inspect the impeller. You can try using a wire with a little barb on the end and trying to pick at the center of the impeller from within the pump pot (where the basket goes), but if this doesn't reveal anything, taking pump apart to reveal impeller is the best bet. Before you take the pump apart, (or after if you've already done so.) make sure pump basket, skimmer basket, and any leaf traps are cleaned out. Make sure any valves on the suction side are fully open to allow as much flow as possible. (you can open and close these later to single out the problem if it is a plugged vac line) Disconnect the cleaner from the wall or skimmer to eliminate a clogged cleaner from the possible causes. A bad o-ring, or air leak somewhere can also cause low, or bad suction. so make sure the pump lid o-ring is sealing properly. Also check the pipe that goes into the pump (suction side) If this is loose, or letting air into system, that will also affect suction. You should be able to find your problem if you check all the above. If not let me know by posting a comment, and I'll help you further. Every pool, and equipment are different, and there are endless possibilities to where your problem can be, but eventually you can narrow it down to the problem. Good luck and let me know how it turns out.

Posted on Oct 05, 2010

Testimonial: "Thank you for your quick response, i will give your suggestion a try"


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya Repairman can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repair professionals here in the US.
click here to Talk to a Repairman (only for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

While vacuming loses suction, sand filter pressure goes high

That increase is due to the filter loading up with debris. Is the pool unusually dirty? If there is a lot of dirt and silt in the pool use the "waste" setting on your backwash valve while vacuuming.
This allows the water to bypass the filter and go directly out the waste line. Keep an eye on your water level because you will be removing water from the pool and may have to add more.

Jun 30, 2013 | Hayward SAND FILTER, PRO SERIES

1 Answer

General question, when the pump stops, there appears to be air leaking in around the cover seal. I can see air bubbles appearing at the rim. This is a new unit and I have greased the oring. Is this...

Usually if the o ring is leaking you might actually hear the air as it leaks into the pump. If that's not the case you could have some other suction leak in your piping. If you have valves on your suction lines perhaps to select skimmer or main drain, check them for leaks. If you have a chlorinateor, check the hoses and fittings and it's lid. Any air getting into the system can show up in the lid as the water in the filter tries to return, continuing the vacuum till pressures are equalized.

Oct 04, 2010 | Pentair IntelliFlo VS-3050 & VS+SVRS...

1 Answer

No suction for pool vac

If you are not getting any suction to the vacuum, but the pump is working fine the rest of the time, start by checking all of your connections that conncets the cleaner to the filter and pump. Make sure there are no cracks, lose hoses, etc. Then, check for the following common problems with your pump that might cause low pressure in pool pumps:

1) Pump not primed

2) Leakage of air into suction system

3) Impeller clogged

4) Valve in suction or discharge line partly closed; Suction or discharge

line partly plugged or too small.

5) Plugged basket in skimmer or hair in lint strainer

6) Dirty filter.

Sep 09, 2010 | Jacuzzi MAGNUM POOL PUMP 1-1/2 HP MAGNUM...

1 Answer

The motor is louder than normal and it has low suction.

Here is a tip that I wrote about my Bissel but I bet you have the same problem and the hose is clogged...

Bissell Bagless Upright Vacuum not working


Aug 13, 2010 | Electrolux Vacuums

1 Answer

System runs fine until trying to vacuum

Pull the strainer basket out of the pump and reach into the intake of the pump at the bottom of the basin. If any debris gets into this area, the pump will not have great suction. The baskets and pipes etc will appear in good condition, but if the intake is plugged up, this could be your problem.

Jun 04, 2010 | Hayward Pool Products Hayward Power Flo LX...

1 Answer

Pump won't **** when attach the hose

Its very possible that it is not a problem with the pool pump, but a problem with the conncetion to the vacuum hose. If you are losing pressure only when you vacuum, make sure that your connection is secure and you have no holes, cracks, etc. in your line. If you think that there are definate pool pump problems, check for the following problems.

1) Clogged or restricted strainer or suction line

2) Plugged or restricted discharge line of filter (high

discharge gauge reading).

3) Air leak in suction (bubbles issuing from return fittings).

4) Pump operating underspeed (low voltage).

5) Plugged or restricted impeller.

May 31, 2010 | Hayward 1 Hp 2 Speed Super Pump Inground...

1 Answer

I replaced compressor for a hussman refrig and its hums loud

God day,
Some thoughts.
1. Are the evap fan motors running, and at full speed. That would give you abnormally low suction pressure.
2. Cap tube sized too small. or partial restriction in the dryer cap tube/dryer when brazing in the lines.
3. Low ambient. What's the temp the machine is running in.
4. Over sized compressor.
5. Moisture. God, 134A is touchy on that one.
6. Was original cap tube soldered to the suction line to create a heat exchanger. Needed on many apps. Definately would cause flash back on start up.
7. Superheat a little low, should be 12 to 15 degrees.

Jan 31, 2010 | Hussmann Freezer Gelato Pan Rack (For 12...

2 Answers

My pool pump pumps water, return is low pressure

fix any air leaks on suction side of pump. Check valve positions.
Clean filters...may need to replace cartridges in cartridge filter, or take out D.E. grid assembly and clean it on a D.E. filter, or change sand in a sand filter...

Mar 26, 2009 | Pool & Spa

1 Answer

Hi my vacuum (Russell Hobss 2200 bagless HEPA) seems to have just enough ( not loads) of suction til it reaches the cleaning head. the head does not appear to be blocked - but there is then almost no...

Generic problem for all Vacuums
Hi my vacuum (Russell Hobss 2200 Bagless HEPA)
Hi my vacuum (Russell Hobss 2200 Bagless HEPA) seems to have just enough (not loads) of suction till it reaches the cleaning head. The head does not appear to be blocked - but there is then almost no suction at all.
It also makes loads of noise when on- and an even louder noise when turning off.
is it fixable or is it dead?

I would advise you to ALWAYS to FIRST UNPLUG YOUR VACUUM before beginning any service procedure.
Well there seems to be maybe a few problems, the head may be clear, but the hoses could be clogged and or the HEPA filter could be clogged as well – if the hoses and wands are clear and the filter clean you may look @ a motor replacement depending on the cost or to buy a new vacuum and in some instances you can trade in your old vacuum for a new one – but check it fist from the suction head thru the hoses, wands and filters, B4 you decide to purchase a new one or to replace the old motor with a new one depending on cost. A rule to live by – the item cost more to repair that to replace – replace the item, if the repair cost (as an example) say $50.00 to $60.00 and to buy a new one would cost $100.00 – buy a new one.

Don – The Vac Man

Apr 21, 2008 | Vacuums

Not finding what you are looking for?
Pentair 011516 WhisperFlo FullRated Energy Efficient Pump 3Horsepower 230Volt Logo

390 people viewed this question

Ask a Question

Usually answered in minutes!

Top Pentair Pool & Spa Experts

Jay Finke
Jay Finke

Level 3 Expert

1368 Answers

Bill Jordan

Level 2 Expert

372 Answers

Jeffrey Turcotte
Jeffrey Turcotte

Level 3 Expert

8743 Answers

Are you a Pentair Pool and Spa Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides