July 26, 20223 yr Total Noob here but I thought I'd ask since I have 3 electricians who can't agree. We installed a Mecer sol-i-ax-5m4 with a mecer 4.8 battery but since inception it's been dropping power. No alarms. Just frequent cuts. Here's what I can tell you No pattern to power cuts. No alarms or alerts. Cuts last about 15 seconds. Setup is USB but this happens on all configs. Up/down arrows are inverted on the lcd panel. Sn sticker is a mismatch with the actual wifi serial number. Fans are loud. It's been two weeks of fiddling and calling tech support. Still rand9m power cuts. I'm at wits end. The technical support team confirm they've never seen behavior like this even after all the settings and tests. This leads me to belive its a faulty unit. Your thoughts? Parow/cpt K. (Setup is purely utility>batt>wall socket) no solar yet.
July 26, 20223 yr 6 hours ago, Kurt79 said: We installed a Mecer sol-i-ax-5m4 with a mecer 4.8 battery but since inception it's been dropping power. So that's an Axpert MKS IV, as far as I know. I assume that the "Mecer 4.8 battery" is a 4.8 kWh battery. Maybe one of these is a bit light for a 5600 W inverter? The battery may be cutting out due to overload, coming back after say 10 seconds, and the inverter takes another 5 seconds or so to boot up and provide output again. Do the power cuts correlate with higher loads? During the power cut, is the front panel still lit? Or does it go dark, then come back with its start-up sequence, whatever that is? From your description, I'm guessing not. If the panel stays lit, is there some indication that the battery is not present during a power cut? For example, all the "bars" go away, or the battery icon flashes. It might me more subtle than a warning or fault code. During the power cut, does the inverter front panel suggest that it's powering the loads? E.g. output voltage reads about 230 V? It might be a faulty output breaker on the AC-out port, or a loose connection. Someone will have to suss that one out with a multimeter and a torch.
December 11, 20223 yr Hi, I also got the Mecer sol-i-ax-5m4, but with a Hubble AM-5 battery. My setup at the moment is just for "back-up" purposes. I don't have any panels yet. The battery gets recharged by escom... It kicks in flawlessly(like a UPS) when loadshedding begins. It also runs during loadshedding without a sweat. BUT... (I will try to explain step by step what happens) when the escom power comes back on. - The inverter's fan starts to spin up faster and this seems normal. - I can then see the battery is being charged - after about 20 to 30 minutes the fan spins slows and it looks like the battery is fully charged - the inverter's rgb ring that was blue goes red and it resets/restart or something in that matter. All my appliances in my house then also dies and have to restart again. I don't know if it is a setting or what, but it would be nice if it can transition back to utility seamlessly like when it kicks in. I hope you can assist. Thank you.
December 11, 20223 yr 3 hours ago, Alfredza said: - after about 20 to 30 minutes the fan spins slows and it looks like the battery is fully charged - the inverter's rgb ring that was blue goes red and it resets/restart or something in that matter. All my appliances in my house then also dies and have to restart again. My guess is that you are charging the battery to too high a voltage, and the BMS is disconnecting from the inverter to prevent over-charging a cell or two. I believe that the Hubble is a 14S (?) NMC (?) battery type, unlike most others (which are mostly 15S LFP, and a few are 16S LFP). * Is the battery BMS connected to the inverter or to a Raspberry Pi via a cable? * What is the battery voltage (as read by the inverter or monitoring software, or possibly by a multimeter) a the end of the charge when this reset happens? If no such cable, check your bulk/absorb voltage setting; it may be too high for your battery. Note that there should be some room between this setting and the battery's absolute maximum voltage before the BMS will disconnect. This maximum is 54.0 V for Pylontech batteries (15S LFP); I have no idea what it is for your Hubble battery. It may be that the battery has unbalanced cells, and that when the unbalance goes away with time, this will happen less frequently.
December 18, 20223 yr On 2022/07/26 at 7:52 AM, Kurt79 said: Total Noob here but I thought I'd ask since I have 3 electricians who can't agree. We installed a Mecer sol-i-ax-5m4 with a mecer 4.8 battery but since inception it's been dropping power. No alarms. Just frequent cuts. Here's what I can tell you No pattern to power cuts. No alarms or alerts. Cuts last about 15 seconds. Setup is USB but this happens on all configs. Up/down arrows are inverted on the lcd panel. Sn sticker is a mismatch with the actual wifi serial number. Fans are loud. It's been two weeks of fiddling and calling tech support. Still rand9m power cuts. I'm at wits end. The technical support team confirm they've never seen behavior like this even after all the settings and tests. This leads me to belive its a faulty unit. Your thoughts? Parow/cpt K. (Setup is purely utility>batt>wall socket) no solar yet. I have just purchased 2 of these 5.6Kva Mecer 5M4 inverters. The one operates using the 4.8Kwh Mecer Battery Rack and the other operating on 4 x 200Ah Lithium-Ion batteries. They are installed at 2 different clients and they are both doing the exact same thing. They randomly reset for about 15 seconds while Mains power is on. Also went through all the settings and cannot find a solution. I also need assistance regarding this error.
December 18, 20223 yr 3 hours ago, JerryTech said: They randomly reset for about 15 seconds A long shot: this sounds slightly like a problem with Axpert MAXs, where surges in the bus voltage are suggested as the reason for F80 faults (CAN communications faults, only happens when inverters are paralleled), and the output goes off for a short time (I can't recall if it's 15 seconds or not). See the discussion about here; the answer may be to disconnect power from one of the boards inside (see first post of that thread and a few after that). I understand if you're reluctant to do this as it may void warranty.
January 20, 20233 yr check maybe if battery settings are correct. equalization, charge rate, cut off volatge, float, bulk etc
February 24, 20233 yr Hi Guys having the same issue with Mercer inverter and Hubble Battery setup. Has anyone resolved the issue yet.
May 2, 20233 yr Hi everyone Here is a fix! I had the same problem. Bought a Mecer SOL-I-AX-5M4 a few weeks ago. Also bought a Sunsynk 5.23kwa battery with it. Connected it all up and seemed to be working fine. Then I found that every time load shedding ends, the battery will start charging and 15min-30min later the inverter sounds a long beep and restarts. After the the charging will continue and all is fine again. The fault error was F08 (bus over / battery voltage too high). I read through another 10 page thread (https://powerforum.co.za/topic/4721-axpert-mks-ii-5kw-error-08/) about these Voltronic inverters which all seem to have this issue since.. well since long ago! Seems like Voltronic is just not interested in fixing this issue. However, to fix this using settings, you can just set your battery "Charge Priority" to "Solar First". In the other thread I read, they also mentioned that the AC Max Charge Current needs to be set to 2A, but this will mean that charging will take very very long. I have increased mine to 10A already and it is still working fine. I will be testing on higher amps as well in the coming weeks. Hope this helps someone else as well. Edited May 2, 20233 yr by PeterPan Added reference to other thread on same forum
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