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How to replace the Main Control Module

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  Note: Operate in sequence, do not operate (2) first, then (1), otherwise an arc will occur
1Disconnect circuit breaker;

   2Pull out all positive and negative fuses;
3Multimeter measurement confirms that the voltage between modules PV + and PV- is 0v;

   4Display all the wiring marks of the host module and take pictures, or record the terminal wiring

corresponding to the wiring mark, follow the original wiring, and reinstall it after disassembly;

   5The flat-blade screwdriver releases the buckle downwards and removes the host module.






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