Maybe you had a surge/spike that messed something up? Did you test your outlet to make sure it's okay? It sounds like your device is beginning to get a little "funky".. maybe swap it out for a different one.
I've had this same behavior with another zen04. Both were new. I lost track of where that one is now. I might try another and observe this one somewhere else.
No spikes or surges, far as I know. How would I check the outlet to make sure it's 'okay'? I have another zen04 plugged into another outlet on the same circuit and it's been rock solid, knock on wood.
I do have a small transformer that powers a nearby Zen16 relay for the WaterCop valve, plugged into the same outlet as the Zen04.
Something that irks me a bit is that Zooz doesn't even say anything about this supposed overcurrent protection in any of its literature on the Zen04.
You need a tester like this..
https://www.amazon.com/Sperry-Instruments-GFI6302-Receptacle-Professional/dp/B000RUL2UU/
edit: Another nice device is a non-contact voltage tester which allows you to safely read if a wire is hot or not. Great for installing/removing switches.
Yeah, Sperry. Kind of like McCullough chain saws.
I heard Dranitz was good, lol.
Here's my Harbor Freight special:
Wait a sec...it's a Sperry too!
My NC voltage tester is a klein though... 
@agnes.zooz check this post above: Spurious Self Protection Shutdown On Smart Plug w/Power Monitoring - #20 by velvetfoot
The device reported the same 142.41A (3) times over the course of 3 hours. This is for sure coming from the device and not a corrupted message. You can see "previousMeterValue" in the 2nd and 3rd matches the same values which equals the 142.41. The delta time matches the timing of the reports also.
@velvetfoot the only power report I see here is the 0 power. Was there any high power readings around this time? With that amps and volts shown the math works out to be 17,331 Watts!
@jtp10181 , no other high power readings around 3:39 PM. That 0 was in all liklihood after it turned itself off. There was a 3.2w reading at 3:15.
We'll check if there's a way to write in some kind of code into the firmware to ignore these high readings but we suspect they're generated by the power supplies used in these applications. When choosing a power supply for one of our other products last year, we did a lot of detailed testing and found that most of the power supplies sold today produced very unstable current values and many were unsafe to use. That means that even if we tell the plug not to report these values, the electronics will still be affected by the current spikes and the device may fail over time if used with similar power supplies. We do recommend the ZEN15 Power Switch for most inductive loads since it's designed to handle motor loads specifically. @velvetfoot please send me a message if you would like to try the ZEN15 in that location to see if it works better for you.
I also need to say here that wireless control of any heat producing appliances or devices is not recommended for any of our products and any operation of such devices should be conducted under supervision at all times.
Hi @agnes.zooz , I'll send you a message. Another advantage of the ZEN15 is that the protection can be shut off, so that mission critical stuff, like a sump pump, won't get erroneously shut down. What are the specs, anyway, for overcurrent shutdown for the ZEN04? It's not noted in the product literature.
I didn't know small power supplies could create large current flows like this. I'll have to read up on it. I was thinking maybe some kind of stray signals from a nearby device creating a problem.
Just to clarify, this issue, where the plug shuts down on overcurrent protection, is different than the other issue where crazy numbers somehow are reported.
Thanks.
@agnes.zooz according to the post I linked up above, his water softener drew 142.41 Amps and then the device shut itself off presumably for over current protection. If this was happening for real I would suspect this device would also pop the circuit breaker when plugged directly into the wall since those will trigger for anything over 15-20amps depending on the breaker. The power pack is only rated for 0.59A, so this seems like a totally bogus report from the device.
I have similar "wall warts" plugged into some Zigbee power plugs that only report power, and I have never seen any excessively large power values (which would indicate a large amp draw if I did). I have one Zigbee plug on a Sump Pump as well which is rock solid and tells me when them sump runs. I would be scared to use a ZEN04 on the sump knowing this data that @velvetfoot has acquired showing it could just lock itself out at any time.
I already wrote code in the driver to ignore the unreasonable values, but the main problem is that the devices goes into a lock out mode for no reason and the user cannot disable that or restore the device remotely.
We did also find some of the bad reports appear to be corrupted messages but this one in particular is definitely legit since the device sent it 3 times over 3 hours and also the device went into its lock out mode tells us that it thinks there was an over-current problem. This is not the first time he has had the over-current lock outs from seemingly small loads.
Thank you for the additional notes, we'll definitely look into this and will try recreating the issue in the lab to see how best to address this.
So it is just two of the ZEN04 you seems to be having problems with mainly? Even after moving it to another location, still getting bad readings?
This last one is a toss up, it looks legit because the deltaTime is exactly one hour. But the Precision is usually 2 for voltage. It is possible the device adjusts the precision based on how high the reading is, so possibly it thought it got 3718V and decided in order to send that in the size 2 packet the precision needed to drop to 0.
I have some similar wall warts. In fact I have a ZEN17 sitting here I can plug into my ZEN04 and see what happens.
That's funny. I too have a Zen17, and also a Zen16 on the coffee table next to me. The black wall wart is hardwired. Perhaps I'll wire the Zen16 into it and plug it into the Zen04.
Two problems in the same place. I returned one with a solid orange light and trip, as I recall. The last one is the blinking light and trip.
Here is a shot of my outlet warnings dashboard. Test04 is the old water softener.
Apparently that water softener power supply does not play nice with the ZEN04 internals.
@agnes.zooz that voltage report he just posted looks like a legit message from the device. There is no way it actually picked up 3595V on the input.
@velvetfoot I don't suppose there is another circuit you could plug into with the water softner temporarily just to rule that out? I am really thinking the ZEN15 will take care of this though.
