Page 22
4.2 Troubleshooting
Faults
Possible reasons
Troubleshooting
The LCD is off
during daytime
Solar array
disconnection
Confirm that Solar and battery
wire connections are correct
and tight
when sunshine is
falling on
on Solar panels
Wire connection is
Battery voltage is
lower than 9V
Please check the voltage of
correct, LCD not
battery. At least 9V voltage to
activate the controller
display
Battery voltage
Check if the battery voltage is
higher than over
Interface
too high, and disconnect the
voltage disconnect
blink
solar module
voltage(OVD)
Load output is normal,
Interface
Battery under
charging LED indicator will
blink
voltage
return to green automatically
when fully charged
The controller will cut off the
Interface
Battery low voltage
output automatically, LED
disconnect
indicator will return to green
blink
automatically when fully
charged
Remove or reduce the load
Interface
Over load or Short
and press the button, the
blink
circuit
controller will resume to work
after 3 seconds
Summary of Contents for MP3741
Page 1: ...Page 1 MP3741 MPPT Solar Charge Controller User Manual ...
Page 26: ...Page 26 Appendix 2 Dimensions Dimensions in millimetres ...
Page 28: ...Page 28 2 Click Permissions 3 Find EPEVER WiFi and click it ...
Page 30: ...Page 30 Step 1 Select WIFI or BLE ...
Page 31: ...Page 31 Step 2 Click Read you should receive a prompt Success ...
Page 32: ...Page 32 Step 3 Click Battery Settings ...
Page 33: ...Page 33 Step 4 Click Read if all goes well you will receive a prompt success ...
Page 34: ...Page 34 Step 5 Modify below parameters according to your Lithium battery specification ...
Page 37: ...Page 37 Step 7 Click Send you should get a prompt Success ...
Page 38: ...Page 38 Step 8 Read again check parameters are correct ...
Page 42: ...Page 42 Step 2 Click Read wait for success prompt ...
Page 45: ...Page 45 Step 4 Click Updated wait for success prompt ...
Page 46: ...Page 46 Step 5 Click Read again re check parameters are correct then click to close ...
