JohanG Posted March 24, 2020 Share Posted March 24, 2020 Axpert MKS Plus 3kVA 2400W 24V Hybrid Inverter BlueNova BN26V-154-4k 6 x Renewsys Deserv 260W At irregular times my BlueNova beeps an error and the inverter elso beeps then the battery and inverter shuts down The battery gives an error message VprechFAIL "Pre-charge Failure " After shutting down waiting a short while the system can be switched on and runs as if noting happened anybody have any idea what this means ?? Quote Link to comment Share on other sites More sharing options...
Gnome Posted March 24, 2020 Share Posted March 24, 2020 Not sure, but since it appears to happen only with BlueNova (SA brand from what I see online). It is probably a good idea to ask them. If they can at least tell you which conditions lead to this error that would help. Quote Link to comment Share on other sites More sharing options...
JohanG Posted August 17, 2020 Author Share Posted August 17, 2020 Been living with the problem as it occurs irregularly BUT It now seems that someone else has had the same problem When the battery reaches close to full charge 97/98% for some reason it switches the solar panels off then an error is detected and this then repeats. The same occurs early morning when the sun comes out and one can hear the inverter switching but no error is activated Coulomb .... what do you think?? Quote Link to comment Share on other sites More sharing options...
Coulomb Posted August 17, 2020 Share Posted August 17, 2020 2 hours ago, JohanG said: When the battery reaches close to full charge 97/98% for some reason it switches the solar panels off then an error is detected and this then repeats. What's the error? Do you mean an actual fault code? Or just a click and zero PV power for a while? If there is a fault code 11 (only happens on some models), then that's "PV Over Voltage". I don't recall off-hand if that would disconnect the relays though (the relays are both on the output (battery side) of the SCC, not on the panel side). 2 hours ago, JohanG said: The same occurs early morning when the sun comes out and one can hear the inverter switching but no error is activated I'm never up that early, but I believe it's not uncommon for the solar charge controller to come on in weak sun, then drop off because it's too weak, and repeat a few times till the sun is stronger. I don't believe that's anything to worry about. Quote Link to comment Share on other sites More sharing options...
JohanG Posted August 18, 2020 Author Share Posted August 18, 2020 No error is displayed but the lights rapidly switches on and off as the axpert beeps ?? Now all is quit I must say for some reason the load watts on Centurion spiked significantly compared to previous days Quote Link to comment Share on other sites More sharing options...
Coulomb Posted August 19, 2020 Share Posted August 19, 2020 On 2020/08/18 at 7:58 PM, JohanG said: No error is displayed but the lights rapidly switches on and off as the axpert beeps ?? That sounds pretty bad. I have no idea what is happening there. It sounds like a power supply fault, that somehow only shows up in certain circumstances. Quote Link to comment Share on other sites More sharing options...
JohanG Posted August 20, 2020 Author Share Posted August 20, 2020 Not good news !!!!!!!!!!!! It does seem as if this only happens when the battery is fully charged .... could this indicate some type of fault? Quote Link to comment Share on other sites More sharing options...
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