!
Two or more errors at the same time can damage the controller, so you must
troubleshoot the existing fault .
6. Troubleshooting
Page 8 of 10 pages
6.1 Troubleshooting
Faults
Reason
Troubleshooting
6.2 Maintenance
For best system performance, the following inspections and maintenance tasks are recommended
to be carried out for at least two times a year.
Make sure no block on air-flow around the controller. Clear up any dirt and fragments on radiator.
Check all the naked wires to make sure insulation is not damaged.
Repair or replace some wires if necessary.
Tighten all terminal screws to the indicated torque; Inspect for loose, broken or burnt cable connections.
Check and confirm that LCD is consistent with required. Pay attention to any troubleshooting or error
indication. Take corrective action if necessary.
Make sure all system components are effectively and tightly connected to ground.
Check all terminals for any corrosion signs, damaged insulation, increased temperature.
Check for any dirt, nesting insects and any corrosion signs. Implement corrections actions as early as
WARNING：Risk of electric shock!
Make sure that all the power is turned off before above operations,
and then follow the corresponding inspections and operations.
Solar charge controller MAX series User Manual
possible.
①Power reduction equipment
②Restart the controller or press the button to clear the faulty
E04
E03
E06
E07
E02
E01
E05
Reduce solar photovoltaic voltageor shield the solar panel
Check whether the solar panel power exceeds the maximum
power limitation. If yes, change the solar panel.
Battery over voltage
Battery low voltage
PV over voltage
PV over current
Load over current
Load short circuit
Over temperature
Check if other sources overcharge the battery.
If not, controller is damaged.
Load will be reconnected when battery is recharged.
load and restore output.
①Clear short circuit fault
②Restart the controller or press the key to restore the load
After the temperature decreases,the controller will work
normally.
output.
appropriately.
E08
Check whether the solar panel is damaged. If so,
replace the photovoltaic panel.
PV short circuit
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