amig AMIG-LST Series, Quick Instructions, Page: 34 / 37

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E15
Abnormal when
the mains switch is
ON
1) The torch trigger is on closed
state when machine is ON
2) Open circuit voltage
3) Current outputs
4) Wire feeding
5) Gas flow
1) Check torch trigger
2) Replace control board
3) Replace drive board
E17
Too large output
current
1) Over-current
2) Current sensor fault
3) Signal line is broken
4) Main control board is damaged
1) Check and repair output cable
2) Trouble-shoot the signal line failure
3) Replace current sensor
4) Replace main control board
E18
Abnormal output
voltage
1) Voltage feedback wire is
broken
2) Main control board is damaged
1) Check voltage feedback wire
2) Replace main control board
E19
Over-heat
protection
1) The welding machine is
overheat (Duty cycle of power
source has been exceeded;
The ventilation openings are
hindered)
2) Temperature relay fault
3) Signal line is broken
4) Main control board is damaged
1) Check fan and wait for the machine cool
down
2) Check the connection of temperature
relay
3) Replace temperature relay
4) Replace main control board
E30
Wire feeder
overload
1) The welding wire is at the end
2) The wire feed motor is
over-current, stuck or
damaged
1) Replace wire spool
2) Straighten the torch cable and check if
the wire feed hose is twisted or blocked
by dust
E40
Communication
between
the
display board and
main control board
is abnormal
1) Communication cables are
loosen or broken
2) Main control board is damaged
3) Display board is damaged
1) Check communication cables
2) Replace main control board
3) Replace display board
E42
Communication
between welding
machine and wire
feeder is abnormal
1) Control cable of wire feeder is
not plugged in or broken
2) Communication cables are
loosen or broken
3) Wire feeder main control board
is damaged
4) Control circuit of welding
machine is faulty
1) Check control cable
2) Check communication cables
3) Replace main control board for wire
feeder
4) Replace circuit board for welding
machine
Table 5-1: Error code display
Important!
If any error message that is not described here appears on the displays, then the fault is one that can only be
put right by a service technical. Make a note of the error message shown in the display, and the serial number and
configuration of the power source, and get in touch with our after-sale service, giving them a detailed description of the
error.