Very strange electrical issue, thoughts?
 

I cook sous vide using an anova immersion circulator, which has a built in pid temp control. When plugged into a specific outlet in my kitchen, the unit continues to heat beyond the setpoint. When plugged into any other outlet in the house, including outlets on the SAME circuit, it works fine. Tried another brand of cooker, does the same thing.
Electrician just left. All outlets on circuit appear normal, voltage good etc. Replaced the problematic one, and same problem...
Ghost in the outlet?

No idea here why it would go above the set temp.

My Sous Vide Art has stopped a couple times when into an hour or more.
I quickly learned that when the plastic container got warm enough, the clamp was slipping down..forcing water over the max fill line. Now, I wedge something under the top of the clamp to keep it from slipping.

Did you replace the outlet?

The only thing I can come up with because I am no professional is that you have
a single phase 220 volt power source to the home and that is two 110 volt circuits.
The one circuit of the two is has small voltage different than the other.
It might mean the solid state voltage threshold of your appliance doesn't accept or work as designed because the voltage of circuit #1 isn't within the tolerance.

Without knowing your internal house wiring 110 volt circuit distribution between the two 110
volt circuits that make up your load center, I would begin plugging it in in different rooms and maybe the other 110 volt circuit will accept the gizmo you are having trouble with.

Yes, swapped out the outlet.

that's nuts.

any chance the thing has bluetooth or wifi so it can connect to your phone? Any chance the ghost is actually in the wireless communication....try an extension cord and moving the unit elsewhere, to a spot near one of the outlets that works perfectly.

wild-ass-guess for sure.

Weird? Try another piece of appliance?

Historically speaking; do you know of anyone, a prankster perhaps, or even a fat person, has died in the kitchen. And maybe remained as a poltergeist.

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Weird is right. I initially thought the cooker was bad, so I bought a different one from amazon, and it did exactly the same thing, and the kicker is that its got manual/wifi and the original one is manual/bluetooth.

Man, that movie scared the living siht out of us for weeks. Sneaked out of the house, took the bus to Hollywood and caught a late show. Scared sihtless walking up our hill back home.

I really think its your appliances and I think Bliculle is correct, it must be the bluetooth or wifi that's the cause. What the hell is bluetooth doing on a piece of appliance anyway?

Is it the outlet, or something near it?
If you set it in the same spot, but use an extension cord to run it from another outlet, do you have the issue? If you move it to another spot where it doesn't have a problem, but use an extension cord to plug it into the problem outlet, is there still a problem?

Good question. I'll try that. I thought about rfi, but there's not a nearby source.One outlet that works is within 3 ft of the problem one.

Its there to allow remote start/stop and temp monitoring. If I change the temp on either unit via wireless, it changes the set temp on the display, but the unit still overruns it, but again, only on the problem outlet. And the unit recognizes the set temp, as it beeps as it should when it reaches it, but the heat stays on. Also, the temp reading on the unit is correct (actual temp, not the set temp) as I've checked that.

Its kinda academic as I can use it on the good outlets and the electrician couldn't find anything that would burn the house down, but it stumps me.

If you decide it's the cooker....this is the one I have....works perfect, no bluetooth

https://www.amazon.com/Sous-Vide-Cooker-Immersion-Circulator/dp/B077GXV153/ref=sr_1_3?dchild=1&keywords=sous+vide+art&qid=161 4898904&sr=8-3

I like rockfan's thinking, nature v nurture.

Have you verified the voltage of the problem outlet with a multi meter?

I reckon there is self-inflicted resonance circuit and that outlet just happens to have right wire length for that oscillation to occur. Chinesium parts are very bad when it comes to spreading interference back to network. There is probably chopper step-down circuit in the heater which is not damped by condensator (saves 50c) and that is feeding back. Oscilloscope should tell...

Did electrician measure voltages under load (with it plugged in?) including the neutral? I suspect he just plugged in the simple tester.

If you have a voltmeter, measure voltage from hot-neutral and neutral to ground with the sous vide plugged in. Or plug a light into the same receptacle and see if it flickers when the sous vide is on.

My money is on resistance (poor connection somewhere) in the neutral or ground lines.

I had that happen once. The electrician said I happened to have exactly the right amount of cable for this to occur :(

Wave forms bouncing back etc.

As others have said check that plug under load and see if the voltage stays up, the poor connection can also be where that plug is wired from, do you know where the wire feeding that plug starts. Do you have anything driven by a VFD on that circuit, like an exhaust fan or fridge?

Plug in a heavy duty extension cord (lengthen the wire) and see if it goes away.

Just did this tonight, it doesn't. Moving the cooker from the outlet while using the cord doesn't help. There are three other outlets on the circuit (fridge on one) and it works fine on the other two (non fridge) outlets.

I did have led lights in a nearby range hood fail around the same time' Hood on a different dedicated circuit, maybe transformer is somehow causing rf, but it must be in the line, as I had the thing 10 ft away and it malfunctioned.

It worked fine on the troublesome outlet for two years prior.

Have warranty parts coming for the hood, will install. But issue is there whether transformer energized in hood or not.

Probably the fridge compressor motor, or the fridge controls. Some older motors have a capacitor, and some newer ones use inverter drives, both can cause noise in the AC line.

Just the compressor cycling on is likely create a low voltage dip on that circuit, possibly resetting the controller.

The fridge is on the same circuit as the sous vide? If so, try the fridge on a different circuit with an extension cord and see if the sous vide works.

Refrigerators should be on a dedicated circuit, and are by code in new construction.

Its also on the same circuit as two other outlets that work with the sous vide, and one is closer.

You can rule out the fridge by using a heavy duty extension cord and plugging the fridge into a different circuit.

Greg, time to sell the house while the market is hot. ;)

Funny that you say that, we put an offer in on a place today...

Is the refrigerator an inverter type compressor?
No idea if this could contribute but merely curious.

no clue-its 3 year old kitchen aid.

What's really got me stumped is that this all worked fine, fridge, sous vide, everything, for almost 3 years.

Bit surprised nobody has yet suggested to check the ground on that socket

^^ post 20..... but current should not be travelling through the ground.

I still think it's a poor connection somewhere.

Measure voltages under load, or see if a simple old-style incandescent light plugged into the same outlet flickers when running the sous vide.

it shouldn't but it could be that the ground is not ground
and some other appliance leaks. and affects this one or vice versa

The fact that the device heats, and heats beyond the set point, implies that he probably does not have a power issue.

Does the device even have a ground pin?

Have you re-tested your hypothesis? You could just have a flakey device....

Yes, the device has a ground pin.
Yes, I used a different brand immersion circ, brand new out of the box (initially thought mine was bad) and it behaves the same way on this outlet, but fine on the others.
Tested for ground and load, didn't test for leakage to ground, will do that, but have swapped outlet with no effect.
I see dead people....

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