E50

Error Code

Cause Analysis

Troubleshooting / Solution

OFS -3

Upgraded the incorrect firmware

Upgrade the correct firmware directly.

DFU

DFU mode may be accidently entered

Unplug the power supply and reboot.

d-3

Unit may be defective

Check the power supply and try with other DC5V power supplies, disconnect all the inputs and outputs of E50 and reboot. If that still not works, unit is considered defective.

Cycle displaying DIR and Err

Unit may be defective

Check the power supply and try with other DC5V power supplies, disconnect all the inputs and outputs of E50 and reboot. If that still not works, unit is considered defective.

Cycle displaying IN and Err

Abnormal input power

Check the power supply and try with other DC5V power supplies.

Cycle displaying INH and Err

Too high input voltage

Check the power supply and try with other DC5V power supplies.

Cycle displaying INL and Err

Too low input voltage

Check the power supply and try with other DC5V power supplies.

Cycle displaying PN and Err /

Cycle displaying PNL and Err /

Cycle displaying PNH and Err

1. If rebooting the unit restores it to normal, then try upgrading the firmware.

2. If rebooting the unit not restores it to normal, then unit may be defective.

1. Upgrade the newest firmware.

2. Check the power supply and try with other DC5V power supplies, disconnect all the inputs and outputs of E50 and reboot. If that still not works, unit is considered defective.