Question about Jandy Laars LX Pool Heater / 400,000 BTU / Natural Gas

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Heater only comes on when both pumps[filter and polaris ] are on.

Heater only showing flow when I turn on two pumps[filter and polaris]. The filter pump is pumping fine,and water IS flowing through heater with just this pump on,but the heater is not sensing it.

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If the polaris pump is being supplied before the heater it is taking some of the pressure the heater needs to turn on. You need to adjust the pressure switch in the heater

Posted on Jul 20, 2009

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1 Answer

Water Flow to Booster Pump


plastic bag with a few socks in it, can be used to block the skimmer plumbing, if the pump is lower than the pool ! if not it will stop draining after the filter emptys

Apr 25, 2013 | Polaris Pb4 - 60 Booster Pump

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Low pump flow and no drive to cleaner


could be a couple of things...., seals in the pump or the pump itself. The system has a leak, the system needs to be primed. filter is too clogged with D>E powder. Try backwashing , cleaning filter then stick a running hose into the top of the pump so the line is full, then when it stops gurgling pull yhe hose out close the lid as fast as possible and turn it on.

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I have a 2 speed pump. Normal filter pressure 20. backwash when 30. filter pressure less than 10. pump very noisy. not enough flow for heater ti turn on. not enough water flow to help auxilary...


IF THE PUMP IS NOISY , SCREAMING . GET IT FIXED NOW ! THATS A 2 SPEED AND YOU DO NOT WANT TO KNOW THE PRICE OF A NEW ONE. SEARCH YOUR AREA FOR YOUR LOCAL POOL PUMP MOTOR REPAIR GUY, CHANCES ARE YOU WILL NEED THE BEARINGS IN THE MOTOR REPLACED, AND SHE WILL BE GOOD AS NEW.. ASK HIM HOW TO TAKE BETTER CARE OF YOUR PUMP, AND FILTER .. HE CAN SAVE YOU THOUSANDS $ OVER THE YEARS ! IT'S WHAT I DO..GOOD LUCK AN VOTE IF I WAS OF HELP.. YOU KNOW I DO THIS 4 FREE RIGHT ? .

Sep 10, 2011 | Pool & Spa

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Hello, Volut cracked overnight and leaked for several hours, drainig the pool down well over 1 foot. Next day, replaced volute, but now polaris is not functioning. Water is being pumped into the...


With a new volute the most likely causes for low pump flow is a restricted return line, a restricted suction line(or air leak), or there is something wrong with the impeller in that order. There is a filter screen in the return line that can cause the return line to be restricted if it is plugged. It is either in the wall fitting or in the tubing system close to the wall fitting. If it is dirty it means that debris is getting into the system. Typically an early indication that a grid in a DE filter has a leak in it is a plugged cleaner filter screen. The speed of the motor could be causing the problem but this is rare without causing an over current condition in the motor causing it to shut off. My suggestion is first check the return filter screen. If it is dirty then clean it out. Before connecting the return hose start the pump and check the flow by reaching down and manually putting your hand over the water stream coming out of the wall fitting. Turn off the pump and connect the cleaner hose without the filter screen installed. Disconnect the hose from the cleaner and hold the end of the hose while someone turns on the pump. Water should come out of the hose at a high rate. Next install the filter screen and the flow coming out of the hose should be about the same. Now try connecting it to the cleaner. I hope this helps.

Aug 07, 2011 | Polaris Pb4 - 60 Booster Pump

1 Answer

Wheels turn at 8 rpmsand don't turn at all sometimes until you move them


If your RPMs are less than 28 in these automatic pool cleaners, you have a problem. Try troubleshooting by doing the following checks. Check the filter screen in the in line filter for debris that would restrict water flow. Clean teh skimmer, filter, and pump baskets. Check the hoses, connections, and swivels for leaks. Remove the blue restrictor disk from the UWF. If you ahve an adjustable valve on your booster pump, try setting in completely open.

Jun 28, 2010 | Polaris 380 In Ground Pool Cleaner

1 Answer

Where the filter screen / hose connection attaches to the wall of the pool there is a lot of water pressure coming out of the black cap.I have replaced with new ( very expensive ) but same problem is...


Make sure that the blue restrictor disk in in place to decrease water flow. That is a common problem with these pool cleaners. If that still isn't enough, you cleaner should have also come with a red restrictor disk that limits water flow even more. You could also try unscrewing the pressure valve to decrease RPMs and pressure.

Jun 09, 2010 | Polaris 280 In - Ground Pool Cleaner with...

1 Answer

My no flow light is on and the polaris won't move


Check all of your hoses, connections, and swivels to make sure that you do not have a leak. Also, check for obstructions in all filter baskets, pumps, debris chambers to make sure that nothing is obstructing the flow. You might also need to increase or reposition your thrust jets. These are pretty common problems with these automatic pool cleaners.

May 13, 2010 | Polaris 380 In Ground Pool Cleaner

1 Answer

Polaris 280 flow is low and moving slowly with nosedive mnmc660 yahoo com is my email. seems like tale spray is fine but rear spray output and wheels turn slow resulting in nosedive. alkready checked...


Make sure that your skimmer, pump, and pool filter are clean and working properly. Your automatic pool cleaner can become sluggish if anyone of these features of your pool is not working correctly. Check all the hoses, connections, and swivels for leaks that could cause loss of water pressure. If it has been working poorly since you replaced the booster pump, you will also want to make sure that it is installed correctly. Finally, check your wheel RPM. It should be operating at between 28-32 RPMs. To do this, mark a single wheel side tire. Turn your pump on, hold the cleaner underwater and count the wheel revolutions for one minute. If you are under 28 RPMs, this might be your problem. To correct this, check your filter screen. I know thay you said that you have already done this, but this is typically the problem so I would check it again. Also, you can remove the blue restrictor disk from the UWF. If you booster pump has an open gate valve, open it completely to increase water flow. This will also help with your RPMs. If you try these suggestions and they do not work, let me know and I will come up with something else to try. Hope this helps you out.

Jun 06, 2009 | Polaris Vac Sweep_ 280 Pressure Side In...

1 Answer

My polaris PB4-60 booster pump does not turn over.


I was able to save a service call by doing the following in under 8 minutes:
1.Switch off electric to pump.
2. Turn off valve on supply side of pump so water does not flow during this procedure.
3. Turn offf filter.
4. Unbolt the six bolts (1/2" socket) on the front side of the pump.
5. Carefully separate the pump from the front panel which contained the six bolts.
6. Grasp with both hands the black round thin disk (impeller) which is part of the pump and turn it either clockwise or counter clockwise. It may be slightly difficult initially but once it it freed it will move easily.
7. Reassemble.
8. Open valve and turn on filter and the power to booster pump.
Any questions e-mail me at bbgreg@optonline.net good luck

May 16, 2009 | Polaris Pb4 - 60 Booster Pump

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