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  • Status: Solved
  • Priority: Medium
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UPS APC 80KVA and 60KVA

hi...
i have 2 apc ups and 2 back up batteries for each , i connect the main EP and load i connect cables from batteries to ups , my question is when i turned it on the screen work with no led's and it gives me error code 7-5-1 and it said external communication disconnected what does that mean ??? what i forgot to connect .
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challenger2013
Asked:
challenger2013
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1 Solution
 
Dan CraciunIT ConsultantCommented:
Probably did that but better check: did you respect the colors of the wires with the batteries?
Make sure the red wire went to the red (+) battery connector.

HTH,
Dan
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nobusCommented:
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challenger2013Author Commented:
in the installation manual at the end of it , there is a connection from insulation circuit breaker with 2 wires to the AC main board xb1 and xb2 i really thought it was the problem not making the ups works , so i'd connect it and when i turned the ups on and exactly the main board switch it blown of with electrical shock and smoke , so i do turned it of then i left the --wires and turned ups on it works ( with same error 7-5-1  ) , and i am now so worried is the board going to work or not after that ?????
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nobusCommented:
>>  blown of with electrical shock and smoke   <<  in this case, it is likely other parts got damaged.
troubleshoot the board, or have it checkec in a shop, or by APC
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nobusCommented:
challenger, i believe i did not deserve a C grade here.
review your grading as shown in the help files, see topics on closing and grading
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