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Axpert 5kVA spares


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Good day, 

I am getting a error 57 on my RCT Axpert. 

I took the control board out as the repair manual suggested. I tested the current sense diodes etc..

But could not find anything wrong. 

The inverter still gives me error 57. 

Where can i buy a new control board? or do someone have a second hand one to sell?



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