MaintenanceCopyright © 2007-2012 Eaton Corporation. All Rights Reserved.IPN 997-00012-48D November 2012 49Problem Possible Cause Required ActionRectifier yellow LED on. Rectifier power limit or currentlimit is active.Power system is charging the batteries.If required, activate the Battery CurrentLimit control process.Load current exceeds the totalrectifier capacity.Install additional rectifiers.Rectifier temperature turndownis active due to low ac supplyvoltage or high ambienttemperature.Power system will return to normaloperation when the ac supply voltageand/or ambient temperature are withinthe specified ranges. See Specifications onpage 69.System controller has shutdown the rectifier. (Dependingon model, rectifier may alsoclick every 5-15 seconds.)Normal operation. See RectifierShutdown in the System ControllerOperation Handbook.If required, restart the rectifier.Rectifier red LED on. Very high or low ac voltage, orac supply failed.Power system will return to normaloperation when the ac supply voltage iswithin the specified range. SeeSpecifications on page 69.DC overvoltage Remove and re-insert rectifier(s) or shutdown and restart using DCTools/Web.Internal rectifier fault. Replace the rectifier.Low system output voltage(rectifiers not in currentlimit).Rectifiers off. Restore the ac supply.Temperature Compensation isactive and the batterytemperature is above thereference temperature.None. This is normal operation (ifbatteries are connected). DisableTemperature Compensation if nobatteries connected.Battery Test or BatteryCharacterization is active.None. Output voltage will return tonormal when Battery Test or BatteryCharacterization is completed.Incorrect float voltage setting atsystem controller.Correct the float voltage setting of thesystem controller.Record new setting.Low system output voltageand rectifier yellow LEDsare on (rectifiers are incurrent limit).Load is too high for rectifiercapacity.Install additional rectifiers.Battery is recharging after acsupply failure.Check battery has recharged withinexpected time.