2017 Pool installed by previous homeowner with Hayward equipment and light.
LPCUS11100
2018 light replaced under warranty.
2019 we bought the house and added a spa with light.
2022 upgraded Hayward control panel to control added spa functions via Hayward cell phone app.
2024 pool light would come on for a moment and then shuts off. Spa light aok.
I checked all the wiring and it appeared to be a faulty light.
Removed the light from the niche and could see moisture inside the lens.
(my light was missing the stainless steel bolt at the top and also the factory installed twist lock latch, probably a result of the first replacement)
(see first pic and removal diagram link below)
Left it on the deck for a week in the Arizona sun, then tried bagging it covered in silica gel kitty litter for several days, but moisture would not dissipate.
Efforts to disassemble the plastic light housing were unsuccessful and I didn't want to break it all apart as it appeared to be glued together around the perimeter, so I turned to the rubber silicone "plug" on back of the light which appeared to have shrunk over the years and was one possible entry point for water as the front of the lens looked intact. (maybe the factory used this hole and plug to remove moisture at time of assembly?)
Removed that plug (see pic) and inspected the seal where the electrical cord enters and that looked ok.
So I repeated above dryout procedure, but still had visible moisture inside the lens.
A new light costs $1,000 so I figured I had nothing to loose, and I drilled a 1'8" hole in the top rim of the light, used a shop vac with section of 1/2" vinyl tubing to narrow down the suction area and applied suction to the drilled hole and it did remove some of the moisture. Then baked in the sun for several more days resulting in no more visible moisture.
Taped off the lens and sprayed Flex Seal into the cord entrance then replaced the screw cover and then sprayed 3 heavy coats to the sides and rear of the light making sure to fill the hole I drilled.
Tested the light out of the water for a few seconds and it worked!
Re-installed the light into the niche and it has been working now for 2 months.

A
LPCUS11100
2018 light replaced under warranty.
2019 we bought the house and added a spa with light.
2022 upgraded Hayward control panel to control added spa functions via Hayward cell phone app.
2024 pool light would come on for a moment and then shuts off. Spa light aok.
I checked all the wiring and it appeared to be a faulty light.
Removed the light from the niche and could see moisture inside the lens.
(my light was missing the stainless steel bolt at the top and also the factory installed twist lock latch, probably a result of the first replacement)
(see first pic and removal diagram link below)
Left it on the deck for a week in the Arizona sun, then tried bagging it covered in silica gel kitty litter for several days, but moisture would not dissipate.
Efforts to disassemble the plastic light housing were unsuccessful and I didn't want to break it all apart as it appeared to be glued together around the perimeter, so I turned to the rubber silicone "plug" on back of the light which appeared to have shrunk over the years and was one possible entry point for water as the front of the lens looked intact. (maybe the factory used this hole and plug to remove moisture at time of assembly?)
Removed that plug (see pic) and inspected the seal where the electrical cord enters and that looked ok.
So I repeated above dryout procedure, but still had visible moisture inside the lens.
A new light costs $1,000 so I figured I had nothing to loose, and I drilled a 1'8" hole in the top rim of the light, used a shop vac with section of 1/2" vinyl tubing to narrow down the suction area and applied suction to the drilled hole and it did remove some of the moisture. Then baked in the sun for several more days resulting in no more visible moisture.
Taped off the lens and sprayed Flex Seal into the cord entrance then replaced the screw cover and then sprayed 3 heavy coats to the sides and rear of the light making sure to fill the hole I drilled.
Tested the light out of the water for a few seconds and it worked!
Re-installed the light into the niche and it has been working now for 2 months.

A
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