Posted February 13, 20223 yr I am having endless poblems with a 3kva 48V Growatt, connected up as battery backup only, no panels. First the inverter malfunctioned about a month after being installed. Was working perfectly fine before that. No changes were made. It was send back to the importer/supplier who informed me that the motherboard was damaged and therefore the warranty is null and void. I accepted this as a power surge was very possible, although all the protection was in place and functioning. I gave the go-ahead for them to repair the inverter. They sent the inverter back and it kept giving a 0 output. I sent it back to the importers who could find no fault. Again was sent back to me. Again I am experiencing the same problem. I had my technician rewire the entire installation and still, the same problem. We have checked everything, electrical, batteries, items on the circuit, no faults. Now the inverter switches to 0 output and after about 10 seconds completely switches off. So I now have an additional problem. I then fitted a loan unit for my customer (a 3kva 48V Victron Multiplus) and the loan unit functions perfectly. Again I sent the Growatt to the importer who informs me that they find no fault with the unit, and don't know what to tell me or what the problem could be. Now I also have another customer that phoned me also with a 3kva Growatt and it seems like he is experiencing the same problem . I have even mailed the manufacturer, but no response yet. I seriously doubt that I will supply a Growatt again. I have never had any issues with any other brand. Can someone maybe give me some advice??? Mail or WhatsApp me please. [email protected] 084 717 4502
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