Question about Hayward SAND FILTER, PRO SERIES

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Pool sand filter noisy only on filter setting and no pressure , but if you bypass the filter the noise goes away and there is pressure

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  • Anonymous May 11, 2010

    Sounds like there is sand in the white centerpipe... but I need more information...

  • John Prohaska
    John Prohaska May 11, 2010

    How does it work when trying to backwash? When you say bypass, I assume you are setting the valve to recirculate?

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  • Master
  • 990 Answers

Something is stopping your water flo before the filter otherwise you would show pressure on the filter guage. The only thing that I can think of would be if you had taken your backwash valve apart and reassembled it in the wrong position. Ether put the handle on backwards or mounted the top out of place. Hope this helps, good luck.

Posted on Dec 05, 2009

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1 Answer

Bypass the LO code on H 350HD Hayward pool heater


"LO" is simply informing you that the Heater is not sensing proper water flow through it! A Flow Problem.
A special sensor, called a pressure switch is this source. But... That does not mean it is bad - No, it is in most cases just doing its job!
Most common reason - Dirty Filter.
A good cleaning of the cartridges, or maybe a breakdown and recharge of a DE Filter, or a good cleansing backwash of your sand filter, will remedy this situation.
Or... Check for any OTHER reason or situations water flow may be reduced through the heater:
  • enough water in pool or spa?
  • If you have a weir gate in skimmer, is it stuck in the UP position?
  • Are any valves closed?
  • Do you have a bypass valve at the heater?
    • If open, this will reduce the amount of water going thru heater, close it to the point, LO goes away.
  • Etc
Good Luck - hope this helped.

May 30, 2014 | Hayward H-series Electronic Gas Pool...

1 Answer

Pool pump pressure


check to see if filters are dirty if using a sand filter or DE filter put multiport on recirculate which will bypass a dirty filter if sand filter is the problem change sand

Dec 16, 2013 | Universal Kreepy Krauly In-Ground Pool...

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

Hayward sand filter


Reference your pressure gauge as the 12:00 position. Going clockwise-
12:00 is Filter, normal running position
2:00 is Waste, water goes from pool and exits the waste line, bypassing filter.
4:00 is Closed, used only when servicing equipment
6:00 is Backwash, reverses water through the filter and goes out the waste line.
8:00 is Recirculate, water bypasses filter and returns to pool.
10:00 is Rinse, water goes through filter and exits to waste line, used briefly after backwashing to clear sediment from filter.
Note that the "pointer," not the handle that you grab, indicates which setting you are on.

May 19, 2013 | Pool & Spa

1 Answer

Have a Hayward side mount pro series sand filter. Just recently the top lid has been popping off . Clamp appears to be in good shape. getting a pressure build up. Any thoughts on the cause/


A pressure build up, indicates several possibilities: 1. An obstruction or closed valve after the filter. 2. A clogged filter. If your filter is equipped with a multiport valve, try the valve setting in the backwash or bypass settings and see if the pressure changes. in the bypass setting, if the pressure remains, you have an obstruction or closed valve after the filter. if the backwash setting causes the pressure to drop, you either have a seriously clogged filter or an obstruction or closed valve after the filter. Assuming the sand is less than 2 years in place, have you checked the sand condition by digging down into the sand deep and checking to see how much debris is still in it? Sand filters DO NOT backwash everything out and will build up over time, requiring a complete dump, clean and refill with fresh filtration sand. If you take the time 1 or twice a season to manually stir up the sand and then backwash repeatedly after stirring it up, you can keep the sand in place for several more years of service. If you live in an area with hard water, it is not unusual to see the sand turn hard like concrete and have to be replced after only a couple years of use. This is typical when pool water pH is high and proper maintenance of the chemistry is neglected. As to the lid popping off, this means the pressure is excessive or the clamp is damaged.

Another point to consider if the condition of the pressure gage... is the reading accurate? In most cases the reading should never be higher than 20, ideally, down around 10-15PSI on clean. Any reading higher, indicates a dirty filter or obstruction after the filter.

Aug 11, 2011 | Hayward SAND FILTER, PRO SERIES

1 Answer

Filter pressure is 0


I'm assuming the pump runs, and the water is circulating from the skimmer back to the pool. Do have the pump running when checking pressure? Second be sure "filter" is selected on multi-port valve. Third, remove gauge with pump off and test gauge with compressed air and be sure gauge is working (don't overpressure gauge depending on gauge scale) If gauge is defective replace. If you still have no pressure on gauge, you might be "bypassing" the filter media (sand) due to a broken pipe from the bottome of the multi-port valve. You sould still see some pressure though as your pump should have some back pressure to the pool.

Jul 04, 2010 | Hayward SAND FILTER, PRO SERIES

1 Answer

I have a Raypak Digital Millivolt pool/spa htr which stopped heat


Don, I suspect the error message is the cause of your problems. A flow error is either real (low flow) or not (bad flow switch). Either way, you get the error code displayed. Always take the filter out of the equation first to make sure it's just not a dirty filter causing the issue. A sand filter can be placed in the "bypass" position or a filter cartridge could be removed. Restart the pump and see if the error code goes away. If it does, clogged filter, real flow problem. Clean / replace the filter. If it does not go away, locate the pressure switch, pull off the two leads and jump them together. If the code goes away, false problem, bad switch. Replace it. Rob

Apr 20, 2010 | Raypak Free Hydraulic Lift Gate Delivery -...

2 Answers

Sand filter not catching little debris


Filter is being bypassed at backwash valve, due to poor spider gasket in valve, or there is a broken lateral in bottom of sand filter, causing debris to return to pool..

Feb 18, 2009 | Hayward Pro Series 18" Above Ground Pool...

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