![]() This has a block diagram figure 2.1 which seems to show a safety relay and an inverter relay. I have the older Axpert 5kVA RCT unit from 2015 and at this time managed to download a service manual for my unit. ![]() It is almost like the inverter was pushing power back to the DB and the neighborhood for that matter via the AC input side. ![]() He has had the electrician out and checked everything and had a second person check and all is wired correctly. Very strange to see two units fail in the same way. This time my friend was in the kitchen and noticed that plugs that are not on UPS output were still ON. Mercer provided a replacement unit which was installed the same way and 16 days later on Boxing day, 3 minutes into load shedding it went up in smoke again. Mercer identified the fault as a "Blown AC Output" from a power surge? This 5kva unit supplied power to a TV, DSTV box and 3 lamps so he enquired how this was possible, but the evidence showed the blown AC Output. Within 2 weeks after installation it caught alight a few minutes into load shedding. This is the new Axpert inverter range with the large color changing light depending what mode it is in. A friend of mine purchased a Mecer (SOL-I-AX-5M4) inverter in November and had it installed.
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