Question about Hayward Pool & Spa

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Hi I need to turn my Hayward pump on manually so then I can turn on the heater. How do I do that? Right now the pump is on a timer to start in 6 hours but I want to turn it on now. How do I do that?

Posted by nooshin boloorian on


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Michael Prior

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  • 147 Answers

Use the over-ride on the clock.

Posted on Jun 11, 2017


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  • 246 Answers

SOURCE: i have a hayward 400k pool heater. The heater


Posted on Sep 17, 2009


Dale Cobb

  • 366 Answers

SOURCE: 1/2hp Hayward Pump for existing inground pool

you will be fine with the 1/2hp. The Hayward will move quite a bit of water as well. It may not move as much water as the 3/4hp but it's very close and the 1/2hp will cost a little less to operate so if anything, you may just have to run it for one additional hour per day to compensate. You will be surprised how much water a 1/2hp will move. The only issue with smaller pumps is if you have pop-up cleaner heads or a suction driven automatic cleaner such as a kreepy krauly, however, if a 3/4hp will run it, a 1/2hp will run it as well. You can install a larger motor on the super pump but it will not move more water unless you upgrade the impeller as well. Just make sure you don't use a bigger impeller than what the motor is rated for because it will strain the motor and cause it to overheat. Hope this helps.

Posted on Feb 22, 2010

Testimonial: "Great. Thanks for the quick feedback. I look forward to saving a few $'s this year operating my pool. Cheers!"


  • 1 Answer

SOURCE: Install a timer to control pool operation

Another option would be to get an electronic timer like the Intermatic P1353 that has 3 circuits on it that you could program to cut on and off at different times. For example, you could have one circuit that controls the pump and turns the pump on, then the second circuit would turn on the booster pump at a set time after the filter pump had come on and then the heater could be set to also run at a preset time after the pump circuit was activated. Since the pump, booster and heater are all 220, it's a straight forward hookup with everything in one timer box.

The lights, as stated before, would be on a separate circuit (110) and have its own timer or photosensitive eye set in line.

Posted on May 11, 2010

Testimonial: "I read the P1353ME manual and it has the capability of exactly what I'd like to do. Thanks. "

A Miller

  • 8404 Answers

SOURCE: pool pump turns off after 1/2 hour or so but I can

Your pump is protected by a thermal device that shuts it off when over heated. Are you running 110 or 220? In my experience, your pump will run cooler on 220 ... consider coverting if appropriate.

Posted on Aug 29, 2010


Jessica Harwell

  • 640 Answers

SOURCE: hayward pool heater h series

It could be that your gas connection has a blockage that is preventing adequate fuel for from getting to the heater. If that is not the case, try consulting your owners manual for these pool heaters. There is an online copy at the link below.

Posted on Dec 07, 2010

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1 Answer

I have Hayward H400IDL2 heater 6 years old. I recently had #1 and #2 1.5 amp fuses blow. I replaced them and then the #4 2.5 amp blew so I replaced it. When I press the mode button to spa the heater

Hi, this is John the Hayward tech. If you are now seeing the #4 fuse go that is on the low voltage side. I would guess the main circuit board. I left a manual on your other post.

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Hayward H100ID wont heat water

If the heater is operational, working and the top of the heater is hot, and you do hear the combustion of the gas, see flames in the burner tray area...

.... then your heater is heating the water!

If there are flames in the heater, the heater is normally doing its job. Most people are not aware of the time it takes to see a "Temperature Rise". The average temperature rise is dependent on your heater size, the ambient temperature of the time of day you would like to use your heater, the wind/breeze factor as it goes over your pool surface. Is the pool waters surface covered? etc. All of this is a factor on how quick the temperature will rise. It is possible that you will not feel warm water coming from a return fitting.

Another common mistake some pool owners make is the system is on a timer. And the desire to start the initial warming of the water starts with the flick of the heater switch and then a few hours later the pump turns off and along with it, the heater. The heater will only work, if the pump is on and circulating the water! No circulation, no heat! So if you have a timer, remove the "Off" timer pins and allow the heater to work.

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How do I turn off the timer on my pool pump so it won't come on

if you are using a hayward control panel, either change the timer or push the 'service' button once. if it is a seperate timer, turn off the breaker to the timer

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Pool pump breaker tripping

1) Not likely the timer is problem, unless there was fire or overheating in timer box. Use nose and eyes to inspect for signs of high heat.

2) Eliminate timer as suspect:
Move wires on timer to test if timer relays have gone bad.
Move terminal 4 to terminal 3
Move terminal 2 to terminal 1

3) Check watt rating of Hayward pump, and voltage.
1Hp motor at 240Volt draws 8 amp, and can draw 6 to 8 times that amount when starting. Up to 100 feet, should be at least 12 gauge wire and double-pole 20 amp breaker. Over 100 feet, 10 gauge wire and 30 amp double-pole breaker is best.

4) Intermatic T104 240V timer is rated 40 amps
Can safely handle 1 Hp motor without nearing heat-rating capacity of timer

5) Make sure the motor is wired correctly for 240Volts.
If motor is wired for 120, and 240 is applied, then tripped breaker can result.

If you need further help, I’m available over the phone at

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1 Answer

My water heater needed to be restarted and my comfort recirculation system isn't working now.I"m hoping it is just the timer. I need to reset the timer and I don't know how. I can't find my manual....

Grundfos timer and pump operate by plugging into ordinary 120V outlet.

1) If outlet has power, then dial on timer should rotate.
If dial is not rotating, then check power to outlet.

2) If outlet has power, but timer is not rotating then timer has gone bad > if grundfos pump is working but timer is not working, you can buy cheap plug-in timer and use that as the timer.

3) If outlet has power and pump is not working, then manually rotate timer dial to see if pump will start.
If pump will not start, then you need a new grundfos.
There are no repair parts for these pumps, and nobody at Fixya has reported taking Grundfos apart and repairing it.
My Grundfos pump will not come apart.

4) Following link has links to Grundfos installation manual, website, product manuals, and contact.

5) To set timer: Grundfos timer dial has movable pins that are used to set on-off times.
When pins are pushed out, timer turns pump ON.

6) Rotate timer dial clockwise until current time lines up with arrowhead located on inner dial.
Dial rotates as time passes, and pins move a lever that turns pump on-off.

Add a comment for more free help.
Also take advantage of fixya phone service.
For a price, expert speaks with you over phone while you work on Grundfos or any do-it-yourself project.
Fixya is always less expensive than a service call.

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Can I wire my heater to my pool pump timer. I want power to the heater only when my pump is running.

If your heater is operating properly, it will not heat if your pump is not running. But you can connect it to your timer also. How you do it will depend on what type of time you have, Which model of heater you have. If you have your manual, you can find wiring examples for your heater.

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Your model numbers don't match _any_ Hayward products.
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