Symptoms, Troubleshooting guide, Troubleshooting and repair – Lincoln Electric SVM143-A User Manual
Page 49: Caution
F-5
TROUBLESHOOTING AND REPAIR
F-5
DH-10
TROUBLESHOOTING GUIDE
Observe all Safety Guidelines detailed throughout this manual.
PROBLEMS
(SYMPTOMS)
POSSIBLE AREAS OF
MISADJUSTMENT(S)
RECOMMENDED
COURSE OF ACTION
Neither drive motor turns when the
gun triggers are activated. The dis-
plays are lit and the correct input
voltage (42 VAC) is applied to the
DH-10.
One side’s drive motor does not
turn, although the arc voltage is
present and the gas solenoid
works and the gun trigger is acti-
vated.
There is NO control of wire feed
speed on one side only. Both
motors turn, both gas solenoids
operate and arc voltage is present.
The WFS can be preset.
1. If an error message “HXX”
appears on the wire feed dis-
play, the unit may be over-
loaded. The “XX” indicates the
time remaining in seconds
before the unit automatically
resets.
2. Make certain the dip switches
are set correctly for the power
source being used.
See
Welding Power Source
Selection.
3. If the control board is a G3041-2
or later, a jumper plug or a
K1558-1 remote switch interface
module must be installed into
connector J5 on the control
board.
1. Check the connections between
the drive motor and the control
board. See the Wiring Diagram.
1. Check the tach leads between
the tach (hall effect device) and
the control board. See the
Wiring Diagram.
1. For feeders using the Remote
Switch Interface Module, make
sure there is continuity (zero
ohms) in the circuit connecting
the two terminals marked 1A on
the remote switch interface P.C.
board. Also check that there is
continuity in the circuit connect-
ing the two terminals marked
2A.
2. Make sure the gun trigger cir-
cuits are working properly. See
the Wiring Diagram.
3. Perform the
4. The control board may be faulty.
1. Perform the
2. The control board may be faulty.
1. Perform the
2. Perform the
FUNCTION PROBLEMS
CAUTION
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 216-383-2531 or 1-800-833-9353.
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