Call a qualified electrician. More information would be needed to accurately trouble shoot your issue. Do you have automation connected to your heater? Is the heater trying to fire when the pump is off or is it ONLY the fan?
Try disconnecting your Water Pressure switch on the heater and see if the issue stops. With WP switch disconnected the heater should not work and the fan should stay off. Replace WP switch and see what happens.
Call a QUALIFIED electrician.

Hayward Pool &... | 131 views | 0 helpful votes

1 Answer

Hayward aqua pod error message check system no cell power 2

there is a relay on the back of the main circuit board that has separated from the circuit. you can resolder this relay quite easily by removing the board.
DANGER: be sure to cut the power to the control box at the main breaker. turning off the breakers in the hayward box will NOT eliminate the power

Hayward Pool &... | 172 views | 0 helpful votes

1 Answer

Is it possible to program a Hayward prologic pool controller to run an action every second day? I have aux 6 on a countdown timer and want it to run every second day.

the prologic control unit will not offer programming for what you seek. the most detailed timers will offer weekday or weekend for each pump speed. you may want to get a remote system so you can control functions from your smartphone

Hayward Pool &... | 130 views | 0 helpful votes

1 Answer

HAYWARD Aqua Rite impossible do diagnostic

i find the aqua rite systems to be very helpful in diagnosing problems. if you can describe the problem you are having, i may be able to help

Hayward Pool &... | 117 views | 0 helpful votes

1 Answer

I have Sumheat S3 Hayward pool heater I also do not have 24 V output between the blue and yellow cables coming from the transformer. Do I need to replace the transformer? Thanks Cecilia

The 24v is called the secondary and sometimes called the out-put. Make sure you have 240v on the primary, sometimes referred to as the in-put. If you have primary voltage then you should have secondary voltage, if not then replace transformer. Make sure the secondary, 24v control fuse is the correct size and present. If the secondary is shorting together or to ground somewhere, it will cause damage to the transformer.

Hayward Pool &... | 131 views | 0 helpful votes

1 Answer

Hello, I have a Hayward pool heater Sum heat S3, there is water leaking at the point at which the copper pipe enters the PVC water pipe, does this mean the refrigerant has leaked as well? Thanks

As far as I know, refrigerant is not used in the heating of pools and spas. Sounds like it is just a connection leak and can be fixed by redoing the joint connection.

Hayward Pool &... | 115 views | 0 helpful votes

1 Answer

I have an Hayward Ecostar sp3400vsp motor and a Hayward Omnilogic I'm trying to get working with it. Currently I have an input voltage too low warning on the Ecostar also Com Buss: Offline.

The pump is not communicating with the control system. Check the comm wire and make sure it is intact and not chewed/worn/damaged.

Hayward Pool &... | 158 views | 0 helpful votes

2 Answers

The water will barley come out of the backwash when turned to back wash on Hayward sand filter

The first hint i would suggest is only turn selector in clockwise direction always.
not to insult but you must have pump off during selectiong.
Now, The ball valve sounds like it is out of alignment.
because of wear, from going back and forth not rotational.
you can check for alignment by checking to see if you have any flow coming out return nozzle into pool. There should be none during backwash.
pressing the handle down unlocks rotation, so if you are handy remove selector from top of filter, then check motion as you move selector. I have used o ring lubricant to lube parts in selector.
BEFORE DISSEMBLING NOTE POSITIONS OF BALL Inspect how the push down to rotate function.
If lubing is no help creating smooth rotation you may need to replace assembly.

Hayward Pool &... | 127 views | 0 helpful votes

1 Answer

I have a Hayward h100id pool heater will Lite and run for about 20 seconds then go off the fan continues running. But no Flame put new igniter in same problem

As JerryFin mentioned, there are cracks in the solder on the circuit board edge connector that cause the unit to stop heating randomly. All you need to do is pull the board and re-flow the solder.
cracks in solder-1-u4sqn5xicldc4uqfsahcb5tp-4-0.jpg

cracks in solder-1-u4sqn5xicldc4uqfsahcb5tp-4-0.jpg

edge connector-u4sqn5xicldc4uqfsahcb5tp-4-2.jpg

Hayward Pool &... | 307 views | 0 helpful votes

1 Answer

Our Hayward heater fired up perfectly this season ,weeks the heater is on Service with an SF code. Should we automatically purchase a new thermistor, and can we replace ourselves?

The sensor is easy to replace with Phillips screw driver and adjustable wrench or wrench set.

Hayward Pool &... | 120 views | 0 helpful votes

1 Answer

My hayward pool pump won't prime,filler the strainer up with water runs fine for a few seconds then the water is sucked in and won't pump

Check to make sure that there is enough water in the pool and that the weir door in the skimmer box isn't jammed in the upright position

Hayward Pool &... | 138 views | 0 helpful votes

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Manual for Hayward pool products DE 4800

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Hayward aqua pod error message check system no cell power 2

Is it possible to program a Hayward prologic pool controller to run an action every second day? I have aux 6 on a countdown timer and want it to run every second day.

HAYWARD Aqua Rite impossible do diagnostic

I have Sumheat S3 Hayward pool heater I also do not have 24 V output between the blue and yellow cables coming from the transformer. Do I need to replace the transformer? Thanks Cecilia

Hello, I have a Hayward pool heater Sum heat S3, there is water leaking at the point at which the copper pipe enters the PVC water pipe, does this mean the refrigerant has leaked as well? Thanks

I have an Hayward Ecostar sp3400vsp motor and a Hayward Omnilogic I'm trying to get working with it. Currently I have an input voltage too low warning on the Ecostar also Com Buss: Offline.

The water will barley come out of the backwash when turned to back wash on Hayward sand filter

I have a Hayward h100id pool heater will Lite and run for about 20 seconds then go off the fan continues running. But no Flame put new igniter in same problem

Our Hayward heater fired up perfectly this season ,weeks the heater is on Service with an SF code. Should we automatically purchase a new thermistor, and can we replace ourselves?

My hayward pool pump won't prime,filler the strainer up with water runs fine for a few seconds then the water is sucked in and won't pump

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