SolarEdge StorEdge BI-NUSGN-01, Installation Manual, Page: 22 / 30

Troubleshooting
Error
Code
Error Message Troubleshooting
26x4
Backup Interface state
inconsistent
Manually switch the Backup Interface to on-grid
(see
Manually Switching the System to the Grid-
connected Mode on page 22).
26x5
Backup Interface state
inconsistent
Manually switch the Backup Interface to on-grid
(see
Manually Switching the System to the Grid-
connected Mode on page 22).
26x6
Backup Interface state
inconsistent
Manually switch the Backup Interface to on-grid
(see
Manually Switching the System to the Grid-
connected Mode on page 22).
26x7
Backup Interface
thresholds error
Verify correct country configuration.
26xF
Inverter doesn't lower AC
voltage Turn off and then back on the inverter AC and DC
switch.
26x11
Backup Interface low
temperature Make sure the ambient temperature is higher than
-40 °F (-40 °C).
26x12
Backup Interface high
temperature Make sure ambient temperature is lower than 122 °F
(50 °C).
26x14
Phase imbalance too
high
Balance the loads on different phases.
3xBD
Backup Interface comm
error
Verify that communication between the Backup
Interface and inverter over RS485 is set up correctly
(see
Connecting the Backup Interface to the Inverter
on page 15).
Troubleshooting 21
Backup Interface Installation Guide MAN-01-00728-1.0