Hayward salt cell panel runs hot

outdoorsgal

LifeTime Supporter
Jan 24, 2015
943
Phoenix, AZ
I may be getting the terminology wrong but the programming panel for our salt cell lights, filter... seems a bit hot to the touch, mainly on the right top of it. it's attached to the part of the house that is wood and the next door neighbor's house recently caught on fire (clean your air vents above your stoves, especially if you fry food!) so we're extra aware. It's a Hayward. Do other's panels run kinda hot to the touch? thanks!
 
Inside the box on the top right of the circuit board is the input resistor. It's a black round disk about the size of a quarter. It gets very hot when the unit is operating. So it is very normal for the top right of the box to be hot to the touch. That resistor is also famous for failing. If and when it does, the good news is $2.50 in parts and 20 min with a soldering iron and it's fixed.
 
It maybe hot to your hand but it's normal and shouldn't be a problem.

BTW: If and when it does fail, you can buy the part or $2.50. The shipping cost more than the part. Order a few to be safe. You have to take the board out to work on it. The easy way to replace it is to snip the legs off the old one and solder the replacement to those. That way there is no soldering to do on the circuit board. It takes about 15 min. Leave the old legs as long as you can, so you can wrap them over the new ones legs and solder. Now you can print this out and keep it for reference.

SL32 2R025 Ametherm | 570-1062-ND | DigiKey
 
It does take a bit of finesse to pull the circuit boards out an do the replacement. There are YouTube videos showing how it's done..
 
It's probably the transformer. If it's getting that hot, it's probably defective and should be replaced.

Note: This is a Hayward automation box such as AquaLogic, ProLogic or AquaPlus.
 

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The easy way to replace the resistor is to snip the legs off the old one and solder the replacement to those. That way there is no soldering to do on the circuit board itself. It only takes about 15 min. Leave the old legs as long as you can, so you can wrap them over the new ones legs and solder. It makes it much easier and leaves the resistor standing away from the board in a vertical position when reinstalled. That moves the heat way from the board and makes for better cooling.
 
The easy way to replace the resistor is to snip the legs off the old one and solder the replacement to those. That way there is no soldering to do on the circuit board itself. It only takes about 15 min. Leave the old legs as long as you can, so you can wrap them over the new ones legs and solder. It makes it much easier and leaves the resistor standing away from the board in a vertical position when reinstalled. That moves the heat way from the board and makes for better cooling.

Brilliant! The simplest of approaches are usually the most efficient and effective


68,000litre, IG vinyl, LorentzPS 600 Solar Pump & 1/2 HP Tristar, Sandfilter, Aquarite T-15 SWG
 
I may be getting the terminology wrong but the programming panel for our salt cell lights, filter... seems a bit hot to the touch, mainly on the right top of it. it's attached to the part of the house that is wood and the next door neighbor's house recently caught on fire (clean your air vents above your stoves, especially if you fry food!) so we're extra aware. It's a Hayward. Do other's panels run kinda hot to the touch? thanks!

Remember, hot to the touch could be a temp as low as 120degrees F . That may seem hot to you, but the combustion temp of wood is well north of 750degrees F. If it was truly getting hot enough to combustion, the unit will have failed long before that.
 
Actually at temperatures as low as 350-400 F pyrolysis can begin which will over time char wood and lower its ignition temperature. But that's still a very long way above the "hot to the touch" range.

We see that often in construction where wood has been placed too close to a heat source like a fireplace. I've seen houses where a fireplace had been in use over a hundred years, have a fire in a wall next to the flue. We open the wall and find chared wood all along the run of the chimney. The ignition temprature finally got low enough that one good fire in the fireplace ignited some of it.

(40 years as a Fire Fighter. That's actually the Chief in chiefwej)
 
thx so much! We have good warranties on stuff for now but I won't worry about it for now and saved this on a word document for when it comes time to change it. Glad to know the advice that it's prob fine for now comes from a fire chief! :)
 
If the transformer is getting excessively hot, then it's causing the inside of the automation box to be hotter than necessary. That is going to shorten the life of everything else in the box.

Now, how hot is too hot, is not well defined. Transformers do get warm. However, if it feels hot, I would consider getting it checked out.
 
We have the same panel, etc. Ours runs hot too. I'll deal with it if it fails. It's been running fine (and hot) for three summers.
 

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