Control System28Service Manual – Scrubtec R 253 - RA40Alarm Log Screen (continues)Improper uses of the batteries or battery charger are also recorded, as in the following table:On-board Battery Charger AlarmsAlarm code--------------------------DescriptionMeaning Condition EffectGB-N-----------------------CONTINUOUSLOW BATTERYVOLTAGETime ofcontinuous usewith dischargedbatteries“N” is the number of hours from key on to offwhen the battery level is below 18.4V for WETCELL (19.6 for AGM) batteries. This event is notrecorded if the usage time is below 10 minutes.Incorrect use by customer. Risk of reducedbattery life.GC-----------------------CHARGERDISCONNBEFORE ENDCYCLECharging cycleinterruptedbeforecompletionDisconnection of battery charger before stage IV= battery symbol with 3 segments lit steadily.Incorrect use by customer. Risk of reducedbattery life.GD-N-----------------------CHARGINGTIME LESSTHAN 4 HOURSCharging phasedurationN = Number of hours from battery chargerconnection to completion of PHASE II (red LEDon) if < 4Incorrect use by customer. Risk of reducedbattery life.Press the One-Touch button to skip to the next Alarm loggedPress and keep pressed for 3 seconds the vacuum button to reset the memory loghttps://harrissupplyind.com - To Order Parts Call 608-268-8080