Full Product Manual
Rev 2020.04.03 17
14. Error Code Chart
Code
Error
Description & Quick Troubleshoot
E00
No error
No action needed.
E01
Battery
Over-discharged
Battery voltage is too low.
DC load will be turned off until battery re-charges to
recovery voltage.
E02
Battery
Over-voltage
Battery voltage has exceeded controller limit.
Check battery bank voltage for compatibility with
controller.
Disconnect controller if battery bank voltage meets
controller requirement, as the controller may be faulty.
E04
Load Short
Circuit
DC load wiring short circuit.
Check load output wire connection for reverse polarity, if
none found, consider possibility of short circuit issues
within the DC load application.
E05
Load Overload
DC load power draw exceeds controller capability.
Reduce load size or upgrade to a higher load capacity
controller.
E06
Overheating
Controller exceeds operating temperature limit.
Ensure the controller is placed in a well-ventilated cool,
dry place.
E08
Solar
Over-amperage
Solar array amperage exceeds controller rated input
amperage.
Decrease the amperage of solar panels connected to the
controller or upgrade to a higher rated controller.
E10
Solar
Over-voltage
Solar array voltage exceeds controller rated input voltage.
Decrease the voltage of solar panels connected to the
controller, this may involve re-wiring your solar panels into
a parallel connection array.
E13
Solar
Reverse Polarity
Solar array input wires connected with reverse polarity.
Disconnect and re-connect with correct wire polarity.
E14
Battery
Reverse Polarity
Battery connection wires connected with reverse polarity.
Disconnect and re-connect with correct wire polarity.
*Contact Grape Solar for live technical support on additional troubleshooting.