If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your
Lincoln Authorized Service Facility for technical troubleshooting assistance before you proceed.
WWW.LINCOLNELECTRIC.COM/LOCATOR
E-3
TROUBLESHOOTING
DUAL MAVERICK
®
450
PROBLEMS
(SYMPTOMS)
POSSIBLE
CAUSE
RECOMMENDED
COURSE OF ACTION
WELDING
No weld output
1. Verify the weld output is ON. A green icon with
“Output ON” appears in the upper right corner
of screen whenever weld output is ON.
If all recommended possible areas of
misadjustment have been checked and
the problem persists, Contact your local
Lincoln Authorized Field Service Facility.
2. Verify the work connection is tight and attached
clean base metal.
3. If in CV mode check that “CV TRIGGER
OVERRIDE” is not set to “REMOTE”.
4. Faulty Field Relay(CR3). Located under the right
control pc board.
5. Faulty PC board
No output control – at the front panel
1. Verify the remote control is not turned on.
“Remote ON” appears on the bottom left of
the screen whenever the remote is turned on.
2. Faulty encoder, replace.
No output control – with remote
1. Verify the remote control is not turned on.
“Remote ON” appears on the bottom left of
the screen whenever the remote is turned on.
2. Verify the remote control is turned on. “Remote
ON” appears on the display screen.
Output control range is limited while
using a remote.
1. While in the weld mode, go to the remote screen
and change the scaling of the remote.
The arc is not stable.
1. Verify the polarity of the electrode and work
cables.
2. Cables may be excessively long, undersized or
damaged.
3. Verify the weld settings match the electrode.
Use Ready-Set-Weld, menu for guidance.
VRD (Volts < 30) not showing on the
display
1. Ensure VRD ON/OFF switch on the PCB is
switched to the “RIGHT” to turn VRD “ON”.
2. Faulty 250 ohm resistor (R2 / R1) for loose wire
connection.
3. Faulty PC board.
Operator Selector Switch (SINGLE /
DUAL) is not functioning properly
1. Micro switch inside of polarity switch is bad.
2. Loose wire connection from micro switch in
polarity switch to right side control PC board.
3. Faulty polarity switch.
Wire Feeder does not work when control
cable is connected to 14 pin
connector.
1. Wire Feeder circuit breaker open. Check (42V)
breaker and reset if tripped.
2. Faulty control cable. Repair or replace cable.
3. Faulty wire feeder. Replace wire feeder.
