Oliver in Spain

Hi. Many thanks, yes it is in the manual - a friend who knows much more about these things than me was asking for the IMP.

Sorry been 2 days now but yesterday was kind of busy. Anyway I stripped her down again and tried using both visual and your sniffascope to locate the problem but with no result. I decided not to go any further for the time being until I can fit a reserve inverter and the strip the Axpert IV. On the same topic but in a different vein do you happen to know how I can find the IMP for the Axpert IV 5.6Kw. This parameter is not given in any of the documentation nor can I find it online. Failing that is there anyway to calculate the IMP using other parameters? Any advice much appreciated-

Great advice! I will strip her down again tomorrow. For some reason at lower powers the inverter triggers less often though I still have to keep an eye on her. Yes, for PYL it automatically selects 80A so selecting USE is the only workaround but then, obviously, there is no communication between batteries and inverter which is not ideal Fingers crossed for tomorrow

Hi. Thanks for getting back. AC is on a time switch as I get free electricity in the evenings which I use to top up the batteries if needed (SUB setting). The inverter otherwise operates normally until the the sun comes up and works fine with the panels disconnected. If I run the inverter in user defined battery (programmer 5) and drop down the combined charging to 30A then the inverter operates normally. 30A is fine for summer but will be too slow for many winter days. I did open her up to check the fans and heat sinks and while there had a look for any obviously burned components but didn't see and. Once again many thankss

Good morning from sunny Spain. I think that I initially described this fault badly as the inverter does not actually shut down. To better explain I have filmed overnight and this morning to record the fault. It appears to only happen during solar charging and more often the higher the amperage. The gaps between the fault vary, sometimes several minutes others immediate. I've also noticed that error code 32 (Communication failure between inverter and display panel) does flash up. When the gap between faults is longer input and charging do resume though not seen here as uploads are limited to 3MB. Please any thoughts. PS. Please ignore date and time stamp Axpert iv fault-Small.mov

Hi. I have an installation about 30 months old that has been running fine. Axpert IV 5600w 48v connected to 6 Pylontech US3000 batteries. All has been working fine until a few days ago when I found a string smell of hot electrics. Since then when charging from solar the inverter repeatedly flashes red and closes down (no error code) it then restarts a few seconds later then closes again on and on. No fault codes and no further smells of hot electrics. All cooling fans are working well, filters are clean and there are no obstructions in the heat sinks. Any suggestions of what to check would be most appreciated. Many thanks.

Most welcome - these settings work on the Axpert IV 5600w

Hi Wilfried. I can only answer from my experience with the Axpert IV 5600w. For that model yes, you would leave the main setting (01) on SBU and set the timer output priority (99) to SUB - note the timer on the Axpert IV 5600w you would set on at 06 and off at 07, it then switches back at 07.59. Hope that this helps. Cheers

Many thanks Jumper. The timer/clock works fine in 'user' mode though I would like the batteries and inverter to communicate as I assume that is the ideal for both. I'll see if there is any feedback on the external timer workaround.

Hi. I am continuing in this thread because the issue is similar, the hardware the same though the batteries and inverter now communicate so the setting in program 5 is now PYL. All well and good. Note that the inverter (Axpert IV 5600w) is not connected to wifi. Since successfully setting up the communication between batteries and inverter the inverter's internal clock is all over the place making the timer unusable. 2 questions: Does the internal clock depend on wifi to remain accurate? If so, and wifi is not an option for the moment, forgetting the internal timer: would setting the inverter output source to SUB and charger source priority to SNU with an external timer switch on the utility side be a workaround? Could this damage the inverter - utility on and off once a day? As always many thanks for any pointers out there.

IT WORKS!!! Thank you so much Coulomb

Having failed to end this morning and rereading I now understand (I think) what you meant - I should enter 07.00 as the start time and 08.00 as the end time. Hopefully then at the end of the 8th hour it cut the utility and return to OSO charging. Fingers crossed for tomorrow 🙂

I've been entering 07.00 as start time and 09.00 as end time. That said this morning I only had 100 (snu) on the timer and it worked - perhaps having both 100 and 99 set at the same times is the problem. I'll try again tomorrow.

Hi. I have just installed a solar PV array consisting of 2 groups of 6 48v 455w panels running through the Axpert IV 5600w which in turn is hooked up to the mains electricity and 6 Pylontech US3000 batteries. My settings are User in program 05 (as I cannot get the batteries to communicate with the inverter properly) and SBU in program 01 Output source priority. The contract I have with electric company provide 2 hours of free electricity each day from 07.00 to 09.00. To take advantage of this free power to top up the batteries etc I have been trying to set up the timers in programs 99 and 100. Setting 99 (Timer Setting for Output Source Priority) to run USB and 100 (Timer Setting for Charger Source Priority) to SNU from 07.00 to 09.00. At 07.00 the utility kick in for both charging and output but do not revert to SBU at 09.00. Any suggestions as to how I can make the timers kick in and then out would be much appreciated.