Hi, I have a 5kw Deye Inverter and when we have loadshedding and the geyser switches on (it's on a timer) it will trip the inverter. This does not happen when there is no loadshedding though. Someone told me that it happens because the geyser's power usage at startup is more than the batteries can handle, so it drops back to the grid, but since there is no grid power, it trips. 

It can apparently be addressed by setting the "back to grid" voltage to a higher value. Does anyone have any experience with this on the Deye inverters?

4 hours ago, CESPACH said:

Hi, I have a 5kw Deye Inverter and when we have loadshedding and the geyser switches on (it's on a timer) it will trip the inverter. This does not happen when there is no loadshedding though. Someone told me that it happens because the geyser's power usage at startup is more than the batteries can handle, so it drops back to the grid, but since there is no grid power, it trips. 

It can apparently be addressed by setting the "back to grid" voltage to a higher value. Does anyone have any experience with this on the Deye inverters?

Why do you have the Geyser on the essential circuit and draining the battery during load shedding? It’s probably a 4kw element and your other load is over 1kw so a total of over 5kw which will definitely trip the inverter due to an overload. Be careful as this could be seen as overloading the inverter by Deye which could make a warranty claim very difficult. 

4 hours ago, CESPACH said:

Hi, I have a 5kw Deye Inverter and when we have loadshedding and the geyser switches on (it's on a timer) it will trip the inverter. This does not happen when there is no loadshedding though. Someone told me that it happens because the geyser's power usage at startup is more than the batteries can handle, so it drops back to the grid, but since there is no grid power, it trips. 

It can apparently be addressed by setting the "back to grid" voltage to a higher value. Does anyone have any experience with this on the Deye inverters?

First question is what battery you've got, next is what element (kiloWatt rating) you've got, and if you've got solar panels.

You could do something like this if you put the geyser on AUX/SmartLoad, have a lower rated element like a 2kW, and run it during the day on solar panels, if you've got say a 1C battery like Hubble to take up the slack for short-term cloud cover. But in general, heating the geyser off batteries is a bad idea.

You can set the output of the battery to suit your specific circumstances - I did it recently on my Sunsynk as I was not comfortable taking 4000w out of the battery at one time.

But note that the battery watts at 48v does not translate directly to amps at 230v.

My inverter tripped yesterday at over 6000w because my wife (with good intentions) switched the geyser on (which is on an auto Geyserwise system btw) whilst the 2.2kw (electricity guzzler) borehole pump was filling the tanks - and we were on loadshedding.

The setting is to protect the battery and extend its life.

I changed my geyser element to a 2000w (the difference from 3kw to 2kw seems small but it makes a huge difference in solar) and it now uses 1900w whilst heating. It also increases the temperature by 14 degrees C per hour on a 150l geyser. I manage the geyser most days by hand as I’m at home - when the solar output is low due to cloud cover I leave it switched off. It services the washing room and kitchen only. I use gas for the bathrooms - expensive but convenient. 

Edited March 30, 20231 yr by Johandup

Thanks Everyone, we did replace the element with a 2kw element. Panels are coming in 5 days. It also turns out the installers didn't set the max discharge value correctly for the 2 x dyness batteries we have. After this, we can run the oven as well. The idea is to be able to use it, when we need to, and not to abuse the batteries on a daily basis.

Once the panels are on, we'll be able to run the geyser from the panels and the oven as well.

On 2023/03/29 at 8:28 PM, Leshen said:

Why do you have the Geyser on the essential circuit and draining the battery during load shedding? It’s probably a 4kw element and your other load is over 1kw so a total of over 5kw which will definitely trip the inverter due to an overload. Be careful as this could be seen as overloading the inverter by Deye which could make a warranty claim very difficult. 

The inverter's max discharge value was set incorrectly, after the installer corrected it, the problem was resolved. I will have solar panels soon, to help with load, and, use solar to power the geyser.

My house, without essentials runs at 0.20kw, so even on the old element, it would trip at around 3kw usage on batteries. Once the inverter was configured correctly, the problem was resolved.

Hi all I have the same issue with my 12kva Deye inverter, 3 x 5kwh Volta batteries, it was not doing this previously but now is, I changed the Geyser element from a 4kw to 3kw, still as soon as loadshedding starts Inverter trips, when I put that geysers breaker down all is fine. Is it a load balancing issue?