SolarEdge Power Harvesting System Installation Manual page 78

SolarEdge Installation Guide for Three Phase Inverters – EU – Version 1.5
Error # LCD Message
17 Temperature
Too High
24 Faulty Temp.
Sensor
25 Isolation Fault
26 Faulty AC
Relay
27 Hardware Error Internal hardware error.
28 RCD Sensor
Error
29-30 Phase Balance
Error
Description
Over temperature.
Broken or unconnected
Temperature sensor.
PV Isolation fault. The
inverter has detected the PV
solar generator is not
properly isolated from
ground earth. The isolation is
checked every time before
the inverter starts operation.
The AC relay failed during
wake-up tests.
The RCD measurement
mechanism has failed during
the wake-up test phase.
The monitoring hardware
that checks the balance of
each phase (L1-N and L2-N)
has exceeded its limit. This
error is checked only in the
USA.
Errors and Troubleshooting
Troubleshooting
If the problem persists, then:

Verify that proper ventilation clearance
exists around the inverter, as described in
the Chassis Clearance section on page 26.

Make sure that the heat-sink fins are clear
of dirt and obstacles.

Check whether the inverter is installed in
an area that is too hot.

Reinstall in a cooler location.
If the problem persists, contact SolarEdge
support.
If the problem 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.
If the problem persists:

Disconnect inverter from AC grid.

Contact SolarEdge support.
If the problem persists, contact SolarEdge
support.
If the problem persists, contact SolarEdge
support.

Check the grid connection.

Check the GND wire connection.

Check the L1, L2 and Neutral wire
connections.

Verify symmetric load between L1 and L2.

Consult the local grid authority.
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