Thanks @Coulomb for all your help. This turned from an inverter repair attempt to a learning experience which is more valuable.

Just to close off this topic, I send the inverter for repairs. Problem was with the main board that was replaced.

Hi I am new to this forum, could anybody recommend a inverter repair center in PE area, I had a big mishap, isolate the PV panels and wanted to remove wires, when removing the negative I by accident touch the casing of the RCT - Axppert VM 3 5 kW , I suspect the MPPT charger is faulty now.

3 hours ago, Flip van Greunen said:

I by accident touch the casing of the RCT - Axppert VM 3 5 kW , I suspect the MPPT charger is faulty now.

The MPPT charger is built into the main board on these models. It would be good to find a repair facility that does component level repair, since "replacing the main board" on one of these is replacing about 80% of the electronics (and about the same of the cost) of the unit.

1 hour ago, Coulomb said:

The MPPT charger is built into the main board on these models. It would be good to find a repair facility that does component level repair, since "replacing the main board" on one of these is replacing about 80% of the electronics (and about the same of the cost) of the unit.

Thanks Coulomb, much appreciated.

@Flip van GreunenSee post https://powerforum.co.za/topic/7819-axpert-inverter-repairservice-center/?tab=comments#comment-90088 regarding Service/Repair Center.

 

1 hour ago, Coulomb said:

It would be good to find a repair facility that does component level repair

SetSolar as mentioned in the post actually troubleshooted component level.

Hello. I'm from Ukraine. My name is Mike. I have a clone of Axpert . 5kW 48V high voltage MPPT . It's installed in not heated room. When air temperature low then 10°C ,UPS take me error 02 . May be any of members can help me ? All resistance of sensors are normal. I conducted an experiment and cooled the sensor, when i cooled them , i have got error 02 .