Lincoln Electric V160-S Service Manual page 65

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Observe Safety Guidelines detailed in the beginning of this manual.
PROBLEMS
(SYMPTOMS)
The machine powers up correctly
but working only in stick mode
(V160T pulse)
The machine has only touch start
and no HF (V160T pulse only)
The fan does not operate
The gas solenoid does not work
(V160T only)
The power LED on the front panel is
"blinking"
Bad welding in stick mode
The thermal light remains lit
The machine has output current but
it is not adjustable
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely,
contact the Lincoln Electric Service Department for technical troubleshooting assistance before you proceed.
Call 1-888-935-3877.
THEORY OF OPERATION
POSSIBLE AREAS OF
MISADJUSTMENT(S)
GENERAL PROBLEMS
1. Make sure that the tig torch is
good
1. Check the HF transformer for
loose or faulty connection in HF
area
1. Check if the machine is in
stand-by condition (after 5 min-
utes of inactivity in tig mode the
fan stops)
2. Check the fan supply voltage,
must be 12vdc
1. Check the gas solenoid supply
voltage, it must be 12vdc, when
the trigger is pressed
2. Replace the gas solenoid
1. Check the input voltage
2. Check for high input current due
to exceeding duty cycle rating
1. Check the input voltage, must
match the rating plate
2. Check the mode switch
1. Check the thermal protector on
the output diodes heatsink
1. Check the current potentiometer
CAUTION
V160-S & -T
RECOMMENDED
COURSE OF ACTION
1. The control board may be faulty
1. Perform the Input oard Test
1. Replace the fan
2. Perform the Input oard Test
3. The control board may be faulty
1. Perform the Input oard Test
2. The control board may be faulty
1. Connect the machine to the cor-
rect voltage
2. Perform the Input oard Test
1. Maybe the arc force does not
work, Replace the weld con-
troller board or the display
board
1. Perform the Inverter oard Test
1. Replace the control board
2. Perform the Inverter oard Test
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