Replus Replus-250 - Troubleshooting and Maintenance

Installing a replacement Replus-250/ Replus-250A/B
Disconnecng a Replus-250/ Replus-250A/B from the PV Module
1. Aach the replacement Replus-250/ Replus-250A/B to the PV module rack using hardware
recommended by your module rack vendor. If you are using grounding washers (e.g., WEEB) to
ground the chassis of the Replus-250/ Replus-250A/B, the old grounding washer should be
discarded and a new grounding washer must be used when installing the replacement
Replus-250/ Replus-250A/B. Torque the Replus-250/ Replus-250A/B fasteners to the values
listed below:
1/4” mounng hardware – 45 in-lbs minimum.
5/16” mounng hardware – 80 in-lbs minimum.
2. If you are using a grounding electrode conductor to ground the Replus-250/ Replus-250A/B
chassis, aach the grounding electrode conductor to the Replus-250/ Replus-250A/B ground
clamp.
3. Connect the AC cable of the replacementReplus-250/ Replus-250A/B and the neighboring
Replus-250/ Replus-250A/B to complete the branch circuit connecons.
4. Complete the connecon map and connect the PV Modules
1) Complete the connecon map.
2) Each Replus-250/ Replus-250A/B has a removable serial number label located on the
mounng plate. Enter this serial number into the MRG, and correspond it to a number in the
connecon map.
3) Connect the PV Modules.
4) Completely install all Replus-250/ Replus-250A/B and all system inter-wiring connecons
prior to installing the PV modules.
a) Mount the PV modules above their corresponding Replus-250/ Replus-250A/B. Each
Replus-250/ Replus-250A/B comes with one male and one female DC connector.
b) First connect the posive DC wire from the PV module to the negavely marked DC
connector (male pin) of the R Replus-250/ Replus-250A/B. Then connect the negave DC
wire from the PV module to the posively marked DC connector (female socket) of the
Replus-250/ Replus-250A/B.
Repeat for all remaining PV modules using one Replus-250/ Replus-250A/B for each module.
To ensure the Replus-250/ Replus-250A/B is not disconnected from the PV modules under load,
adhere to the following disconnecon steps in the order shown:
1. Disconnect the AC by opening the branch circuit breaker.
2. Disconnect the first AC connector in the branch circuit.
3. Cover the module with an opaque cover.
4. Using a DC current probe, verify there is no current flowing in the DC wires between the PV
module and the Replus-250/ Replus-250A/B.
5. Care should be taken when measuring DC currents, as most clamp-on meters must be zeroed
first and tend to dri with me.
6. Disconnect the PV module DC wire connectors from the Replus-250/ Replus-250A/B.
7. Remove the Replus-250/ Replus-250A/B from the PV array rack.
Warning: Do Not Aempt To Repair The Replus-250/ Replus-250a/b; It Contains No
User-service Able Parts. If Troubleshoong Methods Fail, Please Return The Replus-250/
Replus-250a/b To Your Distributor For Maintenance.
Warning: Never Disconnect The Dc Wire Connectors Under Load. Ensure That No Current Is
Flowing Inthe Dc Wires Prior To Disconnecng. An Opaque Covering Maybe Used To Cover
The Module Prior To Disconnecng The Module.
Warning: Always Disconnect Ac Power Before Disconnecng The Pv Module Wires From
Replus-250/ Replus-250a/b. The Ac Connector Of The First Replus-250/ Replus-250a/b In A
Branch Circuis Suitable As A Disconnecng Means Once The Ac Branch Circuit Breaker In
The Load Center Has Been Opened.
Warning: Replus-250/ Replus-250a/b Is Powered By Dc Power From The Pv Modules. Make
Sure You Disconnect The Dc Connecons And Reconnect Dc Power To Watch For The Six
Short Led Blinks One Minute Aer Dc Is Applied.
LED indicaon of error
• Error report: AC or DC fault
The LED light is on by 4 seconds, and off by 4 seconds.
• Error report: GFDI fault
The LED light stays on.
Troubleshoong an Inoperable Replus-250/ Replus-250A/B
7. TROUBLESHOOTING AND MAINTENANCE
To troubleshoot an inoperable Replus-250/ Replus-250A/B, follow the steps in the order shown:
1. Check the connecon to the ulity grid. Verify that the ulity voltage and frequency are within
allowable ranges shown in the label of the Replus-250/ Replus-250A/B.
2. Verify ulity power is present at the inverter in queson by removing AC, then DC power.
Never disconnect the DC wires while the Replus-250/ Replus-250A/B is producing power.
Re-connect the DC module connectors, and then watch for the LED blinks.
3. Check the AC branch circuit interconnecon harness between all the Replus-250/
Replus-250A/B’s. Verify that each inverter is energized by the ulity grid as described in the
previous step.
4. Make sure that any AC disconnects are funconing properly and are closed.
5. Verify the PV module DC voltage is within the allowable range shown in the label of the
Replus-250/ Replus-250A/B.
6. Check the DC connecons between the Replus-250/ Replus-250A/B and the PV module.
7. If the problem persists, please contact ReneSola customer support.
Warning: Do Not Aempt To Repair The Replus-250/ Replus-250A/B; It Contains No
User-serviceable Parts. If Troubleshoong Methods Fail, Pleasere Turn The Defecve
Replus-250/ Replus-250A/B To Your Distributor For Maintenance.
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