56
Maintenance and Troubleshooting - 3
PROBLEM
POSSIBLE REASON
SOLUTION
No power supply input
The max value is not
accordant (refer to §3.1)
The min value is not
accordant (refer to §3.1)
The fuse inside the machine
damaged
The LED in the display is
broken
The earth cable connected
unstably.
There is oil or dust on the
workpiece.
The welding cable is too
long.
Arc can not
be ignited
(TIG)
There is
spark on the
HF igniting
board.
The machine is damaged
The welding cable damaged.
The welding cable is not
connected with the two
output of the welder.
Turn on the power source,
the power lamp is not on,
and fan doesn’t work
The max and min value
displayed doesn’t accord
with the set value.
The number on the display
is not intact.
No no-load voltage output
(MMA)
Check whether there is power supply
Adjust potentiometer Imax on the power
board.
Adjust potentiometer Imin in the current
meter.
Contact to the service.
Contact to the service.
Check the earth cable.
Check and remove it.
The malfunction of the
welding gun switch.
The HF igniting board does
not work.
There is not
spark on the
HF igniting
board.
Check the welding gun switch, control
cable and aero socket.
Contact to the service.
Use an appropriate welding cable.
Contact to the service.
Change it.
Connect the welding cable to the welder’s
output.
No gas flow (TIG)
Open or change the gas cylinder
Remove it
Change it
Gas cylinder is close or
gas pressure is low
Something in the valve
Electromagnetic valve is
damaged
U
S
E
R
MAN
U
AL
Summary of Contents for Inverter 205-TIG AC/DC
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