June 23, 20196 yr 8 hours ago, Fazil said: 1) Does Error 09 occur on both gel and Li batteries connected? Mine was only with gel. Nothing to date with Li. A colleague has had an error 09 happen with a lithium (LFP) battery, but it was the type with no ability to limit the maximum discharge current. It is possible that an LFP battery of the type that is popular now (in a 19" rack with integrated BMS which limits discharge current), that the BMS could recognise a massive overload and disconnect the battery so quickly that neither the BMS or the inverter were damaged. His problem was due to some conducting residue that was apparently present from manufacture. I suspect that's probably rather different to what others are experiencing.
June 24, 20196 yr 7 hours ago, Coulomb said: A colleague has had an error 09 happen with a lithium (LFP) battery, but it was the type with no ability to limit the maximum discharge current. It is possible that an LFP battery of the type that is popular now (in a 19" rack with integrated BMS which limits discharge current), that the BMS could recognise a massive overload and disconnect the battery so quickly that neither the BMS or the inverter were damaged. His problem was due to some conducting residue that was apparently present from manufacture. I suspect that's probably rather different to what others are experiencing. ok seems like an oddity as compared to the norm on this post. So its safe to conclude that most if not all are on gel batteries right? Then, has anybody had 09 on the MKS Mecer?
August 11, 20196 yr A friend had this error on their inverter. I noticed they had a small gauge cable. They put on a 5KVA Must on wiring they were using for a smaller inverter. Could it be the voltage drop triggering this error?
August 12, 20196 yr 4 hours ago, Kalito said: Could it be the voltage drop triggering this error? I think it could be, or at least it might have contributed to the problem. But that's just a gut feeling, I have no hard data to back it up.
August 11, 20205 yr On 2020/08/10 at 9:11 PM, johns said: fault code 2 Fault code 02 is "over temperature". Check that the fan is working, clean out dust if possible, ensure it's not getting direct sunlight. It's possible but unlikely that all is well except for a temperature sensor.
December 4, 20205 yr I have 5kva inverter. It has the error 03. what will be the possible reason? I ave checked everything. Changed the control card but same issue. Please guide.
December 5, 20205 yr 15 hours ago, cressirx said: It has the error 03. what will be the possible reason? Error 03 is "battery voltage too high". First question: is it too high, per a trusted multimeter at the battery terminals? What is the battery voltage according to the inverter? What battery do you have? Is your inverter a 64 V model or a 58.4 V model? If the battery voltage at the terminals is OK but the inverter reads too high, it's likely to be the battery sense resistors, or the PCB around them (allowing moisture and/or dust to affect their value). Have you checked resistors R29-R36, singly and in total (both strings of 4)?
June 1, 20215 yr hi there I also have a error no 9, where can i look to see if the unit is still under warranty using the serial number Serial No: 92931506101856 RCT-AXPERT 5K
June 2, 20215 yr 19 hours ago, Bigsteps said: Serial No: 92931506101856 The 1506 in the serial number means that it was manufactured in 2015, June. It's most unlikely to still be under warranty. There is nowhere online to check it; you have to talk to the reseller that sold you the inverter-charger. Sadly fault code 09 often means failed MOSFETs or IGBTs; in the case of MOSFETs, it's quite a job.
September 27, 20223 yr Hi @Coulomb, what is the reason for the soft start phase of the axperts? Is it perhaps an evaluation / diagnostic phase in order to determine wether one or more power switching device malfunctions or short circuit, before the low impedance power sources of pv and battery are exposed to it. Or is it merely a sort of priming or biasing or pre-charging mechanism?
September 28, 20223 yr 19 hours ago, BritishRacingGreen said: what is the reason for the soft start phase of the axperts? There are two soft starts. One is the BUS soft start. That charges the large 470μF capacitors across the DC bus from a smallish power supply. Discharged capacitors are essentially a short circuit. You may have noticed the splat you get when you connect the much smaller capacitors across the much lower voltage battery, if you're not using a pre-charge circuit (and you always should). The energy in the capacitors is equal to ½CV², so with about the same capacitance (C) and 7-8x the voltage (V), you end up with some 49-64x the energy in the battery-side capacitors. So it's a really good idea to soft start the bus. The bus voltage is monitored during this process. If the bus voltage doesn't reach a reasonable value in a reasonable time, fault code 09 results. The other is the INVERTER soft start. I believe what happens is that the target AC-out voltage is raised from some small minimum to the target 220/230/240 VAC in 5 VAC steps. This is indeed to discover any short circuited IGBTs when the inverter is doing way less work than at full voltage. During the inverter soft start process, various currents and power levels are monitored, and if they exceed reasonable values, the soft start is abandoned and fault code 53 results. Short answer: it's both.
September 29, 20223 yr 17 hours ago, Coulomb said: There are two soft starts. One is the BUS soft start. That charges the large 470μF capacitors across the DC bus from a smallish power supply. Discharged capacitors are essentially a short circuit. You may have noticed the splat you get when you connect the much smaller capacitors across the much lower voltage battery, if you're not using a pre-charge circuit (and you always should). The energy in the capacitors is equal to ½CV², so with about the same capacitance (C) and 7-8x the voltage (V), you end up with some 49-64x the energy in the battery-side capacitors. So it's a really good idea to soft start the bus. The bus voltage is monitored during this process. If the bus voltage doesn't reach a reasonable value in a reasonable time, fault code 09 results. The other is the INVERTER soft start. I believe what happens is that the target AC-out voltage is raised from some small minimum to the target 220/230/240 VAC in 5 VAC steps. This is indeed to discover any short circuited IGBTs when the inverter is doing way less work than at full voltage. During the inverter soft start process, various currents and power levels are monitored, and if they exceed reasonable values, the soft start is abandoned and fault code 53 results. Short answer: it's both. Thanks for your detailed reply.
February 8, 20242 yr Hello everyone, I have a problem of error 09 on Axpert inverter.I have following the articles.I changed both UC3845 and all Mosfets and IGBTs are fine but the error still show up.Would anyone help me with a better solution including the schematic diagram.I will really appreciate. Regards, Reuben Mafuta Banda.
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.