Installation Guide

Code
Error
Message
Troubleshooting
3. Disconnect the AC breaker.
4. Disconnect the DC inputs.
5. Connect each DC string separately, turn the AC and the
inverter ON/OFF switch to ON, until the error appears for
the faulty string.
Do not connect strings with a grounding fault to the
inverter. A certified installer must fix the faulty string
before connecting it to the inverter
For further documentation, contact SolarEdge Support.
18x85
Temp Sensor
fault
Broken or unconnected temperature sensor. Contact
SolarEdge Support.
18x86 Isolation
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.
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.
Refer to www.solaredge.us/files/pdfs/application_note_
isolation_fault_troubleshooting.pdf
18x89 RCD Test Contact SolarEdge support.
18x9E
Controller 3
Err
Contact SolarEdge support.
18xA3-5
Tz Over
current 1/2/3
Contact SolarEdge support.
18xA6-8
Tz Over
voltage
cap1/2/3
Verify that the inverter is set to the correct country.
Turn OFF the inverters in the site and verify AC grid
voltage.
If the inverter is located far from the
connection point to the grid, use a
larger gauge AC wire.
Appendix A: Errors and Troubleshooting 87
EV Charging Single Phase Inverter Guide MAN-01-00404-1.2