10.Troubleshooting
Error
Code
Meaning
Problem
Solution
E2
Control Board Error.
Control board or wires
are damaged.
Replace control board.
E4
Control Board Error. Control board is broken. Replace control board.
E5
Overcurrent Protecti
on.
Control board has a
short circuit or the motor
is blocked.
1. Open the motor cover and check
whether the motor is blocked. Remove
anything blocking the motor.
2. If it is not blocked or the error still
shows, replace the control board.
E6
Motor Error.
The motor is broken or
the wire is loose.
1. Open the motor cover and check
whether the motor is broken. Check
whether the motor wire is connected to
control board properly. Reconnect the
wire if necessary.
2. Replace the control board if the error
still shows.
E7
Communication
Failure.
Wires from the control
board to panel board are
broken or loose.
1. Make sure the wires from the control
board and panel board are connected
securely and not damaged.
2. Replace the control board if the error
still shows.
E8
Overload Protection
Excess of electricity or
user exceeded the
maximum load.
1. Ensure you do not go over the
maximum load.
2. Reconnect power and restart the
machine.
3. Replace the control board if the error
code still shows.
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