ALWAYS DISCONNECT AC POWER BEFORE DISCONNECTING PV MODULE WIRES FROM BDM-600. THE AC
CONNECTOR OF THE FIRST BDM-600 IN A BRANCH CIRCUIT IS SUITABLE AS A DISCONNECTING MEANS ONCE THE
AC BRANCH CIRCUIT BREAKER IN THE LOAD CENTER HAS BEEN OPENED.
Troubleshooting an inoperable BDM micro inverter
To troubleshoot an inoperable BDM-600, follow the steps in the order shown:
1. Check the connection to the utility grid. Verify that the utility voltage and frequency are within allowable ranges
shown in the label of BDM-600.
2. Verify utility power is present at the inverter in question by removing AC, then DC power. Never disconnect the DC
wires while the BDM-600 is producing power. Re-connect the DC module connectors, and then watch for the LED
blinks.
3. Check the AC branch circuit interconnection harness between all the BDM-600. Verify that each inverter is energized
by the utility grid as described in the previous step.
4. Make sure that any AC disconnects are functioning properly and are closed.
5. Verify the PV module DC voltage is within the allowable range shown in the label of BDM-600.
6. Check the DC connections between the BDM-600 and the PV module.
7. PLC signal quality may be checked through the interface on the BDG-256 gateway. If the PLC signal is weak, it might
be due to the distance between the micro inverters and the gateway. It may also be caused by the interference from
other electronic devices. In most cases, signal quality may be significantly improved by moving the BDG-256 to closer
to the micro inverter arrays, and/or farther away from other interferers. In some cases, a signal filter (LCF) may be
installed to reduce the interference to PLC communication. If there are two or more separate BDM systems close by,
it is highly recommended to install LCF for each micro inverter system to block interference from adjacent other
systems.
8. If the problem persists, please call customer support at NEP.
DO NOT ATTEMPT TO REPAIR THE BDM-600; IT CONTAINS NO USER-SERVICEABLE PARTS. IF TROUBLESHOOTING
METHODS FAIL, PLEASE RETURN THE BDM-600 TO YOUR DISTRIBUTOR FOR MAINTENANCE.
RECYCLING AND DISPOSAL
In requirement of WEEE, dispose the product using methods that are in accordance with local
regulations for electronic waste
The product described in this document is involved and categorized in the regulations of Waste Electrical and Electronic
Equipment (WEEE) from the European Community Directive 2012/19/EU. Such regulations shall be applied in dispose
and recycle of the product.
In countries and regions where equivalent regulations to WEEE are implemented in dispose of electrical and electronic
waste, disposing methods in accordance with all applicable laws should be taken.
If the product is to be stored away or shipped, pack the inverter using the original packaging or packaging that is
suitable for the weight and dimensions of the product.
If the product is no longer required or that replacement of the product is arranged or is to be arranged:
DO NOT dispose of the product together with the household waste.
Inform your dealer of the product or an authorized partner of NEP with information of the disposing product.
Dispose the product to a suitably authorized facility for recycling of electrical and electronic waste.
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