SolarEdge Installation Guide for Three Phase Inverters - Solco Solar ...

Errors and TroubleshootingSolarEdge Installation Guide for Three Phase Inverters – EU – MAN-01-00016-1.578Error # LCD Message Description Troubleshooting17 TemperatureToo High24 Faulty Temp.SensorOver temperature.Broken or unconnectedTemperature sensor.25 Isolation Fault PV Isolation fault. Theinverter has detected the PVsolar generator is notproperly isolated fromground earth. The isolation ischecked every time beforethe inverter starts operation.26 Faulty ACRelayThe AC relay failed duringwake-up tests.If the problem persists, then:• Verify that proper ventilation clearanceexists around the inverter, as described inthe Chassis Clearance section on page 26.• Make sure that the heat-sink fins are clearof dirt and obstacles.• Check whether the inverter is installed inan area that is too hot.• Reinstall in a cooler location.If the problem persists, contact SolarEdgesupport.If the problem persists:• Check the PV installation for isolationproblems and ground leakage.• Only a certified PV installer must fix thefaulty string before connecting it to theinverter.If the problem persists:• Disconnect inverter from AC grid.• Contact SolarEdge support.27 Hardware Error Internal hardware error. If the problem persists, contact SolarEdgesupport.28 RCD SensorError29-30 Phase BalanceErrorThe RCD measurementmechanism has failed duringthe wake-up test phase.The monitoring hardwarethat checks the balance ofeach phase (L1-N and L2-N)has exceeded its limit. Thiserror is checked only in theUSA.If the problem persists, contact SolarEdgesupport.• Check the grid connection.• Check the GND wire connection.• Check the L1, L2 and Neutral wireconnections.• Verify symmetric load between L1 and L2.• Consult the local grid authority.