SolarEdge Solar Inverter - Page 56

Appendix A: Errors and Troubleshooting
SolarEdge Installation Guide – MAN-01-00057-2.2
54
Error #
Single
Phase
Error #
Three
Phase
LCD Message
Description
Troubleshooting
15
102
DC Voltage Too
High
DC overvoltage. The
input DC voltage
exceeds the maximum
supported level.
The SolarEdge system normally eliminates
DC overvoltage errors: When DC
overvoltage is detected, the inverter shuts
off the power optimizers and restarts.
If the fault persists:
 Turn OFF the inverter ON/OFF switch.
If after five minutes, the LCD panel
does not show a low safety voltage (1V
per optimizer), check which string is
malfunctioning, and recheck its
connections to the inverter.
 Proceed according to Power Optimizers
Troubleshooting on page 57
 Re-commission all inverters in the site,
as described in Chapter 4:
Commissioning the Installation on
page 23.
16
123
Measurement
Error
Internal hardware error.
If the fault persists, contact SolarEdge
support.
17
104
Temperature Too
High
Over temperature.
If the fault persists:
 Verify that proper clearances exist
around the inverter.
 Make sure that the heat-sink fins are
clear of dirt and obstacles.
 Reinstall in a cooler location.
24
N/A
Faulty Temp.
Sensor
Broken or unconnected
Temperature sensor.
If the fault persists, contact SolarEdge
support.
25
121
Isolation Fault
PV Isolation fault. The
inverter has detected
the PV solar array is not
properly isolated from
ground earth. The
isolation is checked
each time the inverter
starts up.
If the fault persists:
 Check the PV installation for isolation
problems and ground leakage.
 Only a certified PV installer must fix the
faulty string before connecting it to the
inverter.
26
122
Faulty AC Relay
The AC relay failed
during wake-up tests.
If the fault persists:
 Disconnect inverter from AC grid.
 Contact SolarEdge support.
27
95, 106,
120, 125,
126
Measurement
Error
Internal hardware error.
If the fault persists, contact SolarEdge
support.
28
N/A
RCD Sensor
Error
The RCD measurement
has failed during the
wake-up test phase.
If the fault persists, contact SolarEdge
support.