Symmetra PX 48KW Communication Lost With Metering Board

[Usman30]

Dear team,

I am facing issue Communication Lost With Metering Board[1..6] in APC Symmetra PX 48KW UPS, during this error PDM was working but its communication indication lights was off then i have replace metering board with other one. After it was giving error to download FW on it display and i did the same and wait for almost 5min however error is still same and there is no change but now PDM indications lights are ON but still below error it still same.

Furthermore i have upgraded NMC latest firmware but below error still exist.

• Communication Lost With Metering Board[1..6]

Error picture is also attached for your review.

Please guide me how to clear this alarm.

Waiting for response.

Thanks