Installation Guide

Error # Single
Phase
Error # Three
Phase
LCD
Message
Description Troubleshooting
16 123 Hardware Error Internal hardware error If the fault persists, contact SolarEdge Support.
17 104
Temperature
Too High
Over temperature
If the fault persists:
o
Verify that proper clearances exist around the inverter.
o
Make sure that the heat-sink fins are clear of dirt and
obstacles.
o
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:
o
Check the PV installation for isolation problems and
ground leakage.
o
Only a certified PV installer must fix the faulty string
before connecting it to the inverter.
o
Refer to www.solaredge.us/files/pdfs/application_
note_isolation_fault_troubleshooting.pdf
26 122
Faulty AC
Relay
The AC relay failed during wake-up tests.
If the fault persists:
o
Disconnect inverter from AC grid.
o
Contact SolarEdge Support.
27, 153
95, 106, 120,
125, 126
Hardware 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.
Error Codes
SolarEdge-Installation Guide MAN-01-00002-4.0
90