33
2. After finishing using the welding machine, please make sure to turn off the power switch.
3. In the places with poor ventilation, continuously sending shielding gas may lead to
suffocation from hypoxia.
6.6 Alarm code
Welding machine has the function of automatic protection when an exception occurs,
the alarm code, phenomenon, causes and solutions as shown in table 12.
Table 12: alarm code, phenomenon, causes and elimination measures refer to the table
Alarm
code
Phenomenon
Cause
Solution
E40
Welding machine
internal display
board and main
board
communications
is abnormal
1) Communications wiring is
loose or short line
2) Main control board failure
1) check communications
wiring
2 ) replace the main control
bo
board
E41
Wire feeder internal
main board
communications
is abnormal
1) Communications wiring is
loose or short line
2) The wire feeder main control
board is faulty
3) The wire feeder display board
is faulty
1) check communications
wiring
2) Replace main control
board
3) Replace display board
E42
Welding machine
and wire feeder
Abnormal
communication
1) The wire feeder control cable
is not inserted well or
disconnected.
2) Communication wire is loose
or disconnected.
3) The wire feeder main control
board failure.
4) The corresponding control
circuit inside the machine is
faulty
1) check the wire
2) check communication
wire
3) replace it
4) check circuit
E33
Sticky wire
proection
At end of welding, welding wire
and workpiece adhere to each
Turn off the power, after
separating wire and
