I've had great luck with ZEN15 power plugs and have one on many of my appliances (sump pump, dehumidifier, washer, etc.). I had one on my old dishwasher for several years.
Using same on a new Bosch dishwasher, and it consistently cuts off power to the load early into the cycle. The LED is solid orange. Last event recorded was a new high power reading, but it is only 269 watts. The dishwasher pulls max of 12A and never trips a 15A breaker. Bosch dishwashers don't have a heating element to dry dishes, but does heat the water. So I'm surprised ZEN15 is seeing something it doesn't like.
I know that I can turn off overload protection, but I'm not excited about that idea since it is not recommended.
I have a Zen15 connected to my GE dishwasher and it's been working great. Just looked and the PowerH for the current month which I just reset on the 28th, is 1.1 MWatts, yeah mega, and the PowerL is -2.2 MWatts so that might be a bug. I have noticed all the of the Zen15 devices do this but they never overload, so obviously they don't look at that to determine an overload. Are you on the latest firmware? I updated all mine a while back hoping to fix the bogus readings but it did not. Even with the old firmware I have never had one overload.
[edit]Just realized I don't actually reset power on the 28th only the energy readings. So it could have had this reading for sometime. I just reset power and it so happens my wife is running the dishwasher, max so far is 1015 Watts.
Which model of the ZEN15 do you have? I never had an issue the older models but the ZW LR model (newest) did have the issue until the latest firmware version (2.10). They added some additional parameters for how overload protection is triggered and fixed a bug which caused it to shutoff in certain "edge" cases during appliance startup.
I had the same problem recently and, after confirming my pump did not exceed the rating of the ZEN15, I reached out Zooz. They told me there was a known bug in v2.0 of the firmware. The y suggested I upgrade the firmware, which I did and it’s worked perfectly since.
Edit: @HAL9000, above you mentioned v2 generation of the product. Just to clarify, I was referring to the firmware version once joined to HE. Not sure those are one and the same.
When I said this was a workaround last week, I got attacked for it. In fact you were on that thread, so not sure why this is the first time you are hearing it.
The ZEN15 is rated for 15amps. If the nominal voltage is 120 V, the max power is 1800 watts.
I do not know about your particular dishwasher, but many of them can pull 1800 watts. Since your ZEN15 is tripping on overlaod, it sounds like the dishwasher is running at this level, especially when the heating coils come on.
A dishwasher needs to be on a 20 amp circuit. Also, if the dishwasher is permanently installed in a cabinet as most are, the National Electrical Code requires that it be hard wired. Using a plug like the ZEN15 would be a code violation.
I specified that in my original post. This dishwasher is rated at 12A max.
The powerH was 269.739 watts just before it turned off. Yes, there could be a surge higher than that before it could be reported, but the ZEN15 is built to handle momentary surges that you'd get from appliances, so I doubt this is actually an overload condition.
As I said, Bosch dishwashers don't have a heating element for drying.
The circuit is wired with 12-2 Romex, so it could be. The GFCI outlet that I'm using (more about that next) is only rated 15A, so I replaced the breaker with 15A. An appliance that draws max of 12A only "needs" a 15A circuit.
You don't know what code is in my county. You also haven't looked at NEC 422.16(B)(2) language lately. Not only are plug-ins with flexible cord permitted, but in my county, you MUST have a plug-in to a GFCI outlet accessible in an adjacent cabinet (not behind the dishwasher) or snake Romex in the wall behind the dishwasher to a cutoff switch above the countertop.
I should note that tripping on overload was my assumption based on behavior and what appeared to be an orange LED. I'm not 100% certain that it wasn't reddish-orange, and neither am I sure the colors actually indicates anything in this regard.
I have swapped in a newer ZEN15 to see how it behaves.
I’m pretty sure that new construction in the U.S.A. also uses cut off switches mounted above the dishwasher (at least that was the case in our last house which was built in 2004).
Actually looked up the code:
Ground Fault Circuit Interrupter required in receptacles or junction boxes for kitchen dishwashers (2014).
I have noticed all the of the Zen15 devices do this but they never overload, so obviously they don't look at that to determine an overload. Are you on the latest firmware? I updated all mine a while back hoping to fix the bogus readings but it did not. Even with the old firmware I have never had one overload.
