You are living in a Alfred Hitchcock movie.
this post was submitted on 02 Aug 2025
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You’ve got an IR sensor somewhere that is supposed to turn the lights on when it senses a person’s presence. The heat from the boiling water is tripping sensor.
I have a similar sensor in my faucet. It always turns the faucet on when I pour boiling water into the sink.
That’s my guess anyway.
Of the answers I've seen this is the one that makes most sense.
Of course, the real answer is that the sink is haunted.
Shhh, we're not supposed to talk about it
Some LED strips intended for kitchens have a feature where you can place your palm on the strip to turn it on or change the brightness. This sort of thing is usually achieved with backscatter IR, which may also be triggered from water vapor. Try pushing your hand against the ends of the strip to invalidate this hypothesis.
since the light only turns on after introducing a warm object, this means op is lizard people
nah. OP is just too cool for light.
Probably even wears sunglasses at night.
I have an led strip installed next to my oven at a similar place. There is a larger "button" that reacts to touch, you can also dim it. When I am cooking, the steam of the boiling water turns dims that light on and off, it's pretty annoying but also kind of funny.
Holy shit that sounds like a good setup to get electrocuted.
Please don't.
Stop angering the disposal troll
Ghosts
The number one rule of all electronics is thou shall check ground. Sounds like a grounding issue somewhere.
You should still check ground, but if it’s repeatable with hot water and not cold water, it’s probably because of the heat. To remove water from the equation, you can probably use a heat lamp.
Is the sink stainless?
Do you have garbage disposal?
pic attached
I'm guessing you have an issue with your neutral loop and/or maybe a junction box fastener touching a water supply with a bad wiring job.
You can use a meter to get a better idea of what is happening, but I would suggest you seek a licensed electrician because this sort of issue could be indicative of a big dangerous problem.
I suspect the vibrations of the pouring water are making something make contact with something else and that is turning on the LEDs.
Test this hypothesis with the same pot full of cold water.
When thee red bulbs in My under cabinet lighting are staring to die I have found the need to be tapped to turn on. I replace them and the new ones work fine.