IGBT CO2 - Page 76

68 Chapter 4 Maintenance
Ehave Series Full Digital IGBT CO
2
/MAG/MMA Multifunctional Inverter Welder User Manual
Error
Code
Displayed Content
Fault
Cause
Solution
Three
Nixie
Tubes in
the Middle
Screen
Three
Nixie
Tubes in
the Right
Screen
E6
E 6
None
Output
overcurrent
The output is
short-circuited or the
current is too high.
The output diode module
is broken.
Verify that the output is not
short-circuited.
Verify that the output diode
module is not broken.
E7
E 7
None
Communicatio
n fault
The input power cable is
not connected properly.
Input power phase loss or
phase imbalance occurs.
DSP is not powered on.
No program is written into
DSP or DSP is broken.
Communication open
circuit exists.
Verify that the input cables are
connected properly.
Verify that the input power is
normal.
Verify that the wire inching
control board connection is
normal.
Verify that the display board
connection is normal.
Verify that the wire inching
control board works properly.
E8
E 8
None
Output
overvoltage
The input voltage is too
high.
The main transformer is
broken.
The output cables are not
connected correctly.
Verify that the input voltage is
normal.
Verify that the main transformer
is not broken.
Verify that the output cables are
connected correctly.
E9
E 9
None
Primary side
overcurrent
IGBT is broken.
The primary side diode is
broken.
The main transformer is
broken.
The secondary output
diode module is broken.
Verify that the main power board
is not broken.
Verify that the main transformer
is not broken.
Verify that the output diode
module is not broken.
E10
E10
None
Primary side
overvoltage
The input power is
insufficient.
The input voltage is too
high.
Verify that the input power is
normal.
Verify that the input voltage is
normal.
E11
E11
None
Current Hall
connector
disconnection
The current Hall
connector is
disconnected.
Verify that the connector is
connected.
E12
E12
None
Disconnection
of the input
voltage
detection
connector
The input voltage
detection connector is not
connected or the ring
terminal of the connection
cable is not connected.
The input voltage
detection cable is broken.
Verify that the input voltage
detection connector is
connected and the ring terminal
of the connection cable is
connected.
Verify that the input voltage
detection cable is normal.
E20
E20
None
PCB not
registered
The PCB is not certified.
Purchase the PCB certified by
the Megmeet.