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Thank you this information. So yesterday we had an electricity supply failure out of the blue at 17:55, the system was in Back-up mode and it didn't kick in. The whole place descended into darkness. In looking at the plant Status, it seems that we had a communication failure, so the system didn't work. We also had a communication failure yesterday at around 12:00 and again this morning at around 02:55. However the house WiFi is working fine. Is it a scenario that if it loses WiFi signal for any reason it doesn't work? If that is the case then it is very worrying. I would wonder what would happen if the internet went down (As has happened in the past).

Further to my enquiry and answer by FUENKLI. There are some things that I don't understand, so I have listed what I desire in order and hope some clarity will emerge. What I would like to achieve with our PV/Lithium Battery system; Achieve as much economy as possible but also want to make sure that I have back-up when we have load shedding. I have a Goodwe Model GW5048D-ES with 12 PV Panels, six facing about 3 degrees off North and six facing about 3 degrees off East and 2 x Lithium Ion Batteries (Pylon 2V 2.4KW). So the morning time is the strongest scenario, in winter the sun starts hitting the PV array about 07:45. In summer I assume that would be somewhere around 05:30. In winter, I would like the system to use PV/Battery as much as possible between 08:00 and 14:30 daily. At 14:30 I would like the system to then switch over to using mainly the PV to charge the battery system so that I have at least 80% by the time it gets dark. In summer I would like the system to use PV/Battery as much as possible between 06300 and 16:00 daily. Based on advice I set up the system in the following way: (Sequence of setting windows) Safety Area: South Africa (Not shown in Image panel) Work Mode: Economic Mode Economic Model: Set Battery Power Group 1 (Selected blue switch) Start Time: 08:00 End Time: 14:30 Rated Power: 15% Battery Mode: Charge Repeat: Every Day What I don’t understand is: 1. (ECONOMIC MODEL) - Battery Group 1. Does this refer to a pair of batteries (As I have two batteries is this the only switch I should select or is it a switch per battery?) What are Battery Power Groups? 2. (SET-UP TIME) – Is this start and finish of charging (or discharging) 3. Rated Power: Does refer to the maximum discharge point? Or ? 4. Battery Mode: Should I have charge or discharge here? (Refers to #2 above) I like to understand what I am dealing with so I can get it set-up appropriately. Thank you in advance for any help you can provide to enable me to understand some of the issues.

Thanks once again

Thank you, I will give this a shot and let you know how it works. For you (And anyone's interest), I shot this material when they were doing the installation.

We recently installed PVs and Batteries. (A Goodwe system). I want to set it up so it runs off both pv & batteries in the morning until about 13:30, the switch to charging the batteries so they give us back up if we have a power failure overnight. But I find the options on the stsrem PV Master confusing. I have been switching them manually, is there any way of automating this? I also want to add more batteries to the system which I am told can accommodate 8 batteries. Any suggestions?