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F-12
TROUBLESHOOTING AND REPAIR
F-12
DH-10
Observe all Safety Guidelines detailed throughout this manual.
PROBLEMS
(SYMPTOMS)
POSSIBLE AREAS OF
MISADJUSTMENT(S)
RECOMMENDED
COURSE OF ACTION
An “Er” message is displayed when
the DH-10 is powered up.
A “GLP” message is displayed.
When the gun trigger is activated
the wire feeds and arc voltage is
present but gas does not flow.
1. This indicates an EEPROM
error has been detected. Press
any key to return to normal
operation. Check all the settings
to make sure they are within the
acceptable ranges. If the “Er”
message is still displayed
remove the input power. While
pressing the Timer and Control
keys, turn on the input power.
The message “Ln” should be
displayed. Leave on for 5 sec-
onds. Remove the input power.
Note: All the settings will be
removed.
1. The Ground Lead Protector cir-
cuit has activated due to exces-
sive current flow in the wire
feeder frame. This can be
caused be the electrode coming
in contact with the wire feeder
frame or poor connections in the
work cable circuit. The wire
feeder will be disabled. Remedy
the “grounding” problem and
resume normal operations by
releasing the gun trigger and
then closing the gun trigger.
1. Make sure the gas supply is
adequate and connected cor-
rectly to the DH-10.
1. The control board may be
faulty.
1. The GLP reed switch may be
faulty. This switch is normally
open and should only close
when current is flowing through
the green lead and wire feeder
frame. It may be stuck closed.
See the Wiring Diagram.
2. The control board may be
faulty.
1. Perform the
Gas Solenoid
Test
.
2. The control board may be
faulty.
FUNCTION PROBLEMS (Continued)
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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