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F-8
TROUBLESHOOTING AND REPAIR
F-8
LN-10
Observe all Safety Guidelines detailed throughout this manual.
PROBLEMS
(SYMPTOMS)
POSSIBLE AREAS OF
MISADJUSTMENT(S)
RECOMMENDED
COURSE OF ACTION
The “Cold Feed Forward” and/or
the “Cold Feed Reverse” buttons
do not function properly. The motor
operates properly in other modes.
The “Gas Purge” button does not
activate the gas solenoid. The gas
solenoid operates properly in other
modes.
The “Procedure” button does not
function properly.
1. Check the connectors and wires
between the display board and
the control board for loose or
faulty connections. (J11 and J3)
2. Check the connector J10
between the keypad and the
display board for loose
connections.
1. Check the connectors and wires
between the display board and
the control board for loose or
faulty connections. (J11 and J3)
2. Check the connector J10
between the keypad and the
display board for loose
connections.
1. Check the connectors and wires
between the display board and
the control board for loose or
faulty connections. (J11 and J3)
2. Check the connector J10
between the keypad and the
display board for loose
connections.
1. Perform the Keypad Resis-
tance Test.
2. The display board may be
faulty.
3. The control board may be
faulty.
1. Perform the Keypad Resis-
tance Test.
2. The display board may be
faulty.
3. The control board may be
faulty.
1. Perform the Keypad Resis-
tance Test.
2. The display board may be
faulty.
3. 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 1-800-833-9353.
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