Pool light trouble shooting

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amati5

Well-known member
Sep 13, 2011
238
So Cal
So the Pentair led light strip when I turn on the light. I found continuity between the white and the black (from the light) at the conjunction box above the pool. Took out the light and disassembled everything. I found continuity between the 2 white wires even though the light was sitting on deck for a day. Is this normal to have continuity between these wires after the board removed (or even if they are still plugged to the board) ? If not, does it mean the wires are in contact inside the black water seal because of water got inside.

There is no sign of water inside the light. When I unplugged the white wires from the board, one leg broke off the board and the other pull up the skin of the board. Wonder that’s caused by humidity.

I guess I can’t no longer hope to just change out the board.

Thx
 

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Is the light 12V or 120V?

Do you have a light transformer by your equipment pad?

Are the light wires connected at the light junction box?
 
120v 70w labeled on the light. No transformer at box. White wires show continuity regardless if power wires are connected or not.

By the way, I connected the power wires (board not connected) and turned on the switch, circuit breaker didn’t strip. Got 13.9 V (ac) across the white wires. Does that mean the board use 13.9 ac volt, and the transformer is in the black seal? I don’t see any indication on the board that indicate using 13.9 (or 14) volt.
Pic attached
 

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Yes you will have continuity between the two white wires. When plugged in, the voltage between the two white wires should be about 14.3VAC. Your voltage readings are good.
Yes the transformer is in the black epoxy sealed section of the light housing.

If you are good at soldering, you can attach wires to the two broken spade terminal pads, then epoxy the wires to the board so they dont pull off. Then reconnect the the wires to transformer.
It does not matter which wire goes where.

Or you need a new $400 light / circuit board.

Funny you are having issues with your lights. I'm just about finished designing a replacement board for these Pentair light fixtures that will work on 120VAC and 12VAC models.
Single color only, can build for under $100 per board. I only use blue. don't really like any other color. But can build it in any color desired (Red, Green, Blue, White).
 
KenKasza said:
If you are good at soldering, you can attach wires to the two broken spade terminal pads, then epoxy the wires to the board so they dont pull off. Then reconnect the the wires to transformer.
It does not matter which wire goes where.
Click to expand...
You mean reuse the old board? Now that I know the circuit breaker doesn’t strip without the board plugged in, there must be something wrong with board then?

Actually, I left out some details. Before taking out the light, there was continuity between the Black wire and the ground wire (from the light) at the box. After removing the board, continuity gone.

I’ll try any alternatives, these lights cost a bunch and don’t last more than a few seasons.
 
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If the board is causing the breaker to trip then not much you can do there. My bad board was just messed up colors, but still worked lit up and did not cause electrical issues.
I wont have my design ready for a couple months. Going on vacation so everything is on hold.

I also need to talk with the administrators about selling a replacement board at cost to members. Will be looking for some volunteers to test my design, short term and long term.
I know this does not fix you issue now. One of my lights remain off until I complete my design.
 
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