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4-6.
Troubleshooting
Trouble
Remedy
No
weld
output;
wire
does
not
feed.
Be
sure
line
disconnect
switch
is
On
(see
Section
2-12).
Replace
building
line
fuse
or
reset
circuit
breaker
if
open
(see
Section
2-12).
Reset
circuit
breaker
CB1
(see
Section
4-2).
Secure
gun
trigger
connections
(see
Section
2-5,
and
see
gun
Owners
Manual).
Have
Factory
Authorized
Service
Agent
check
Power
switch.
Have
Factory
Authorized
Service
Agent
check
all
board
connections
and
main
control
board.
No
weld
output;
wire
feeds.
Thermostat
TP1
open
(overheating).
Allowfan
to
run;
the
thermostat
will
close
when
the
unit
has
cooled
(see
Section
2-2).
Connect
work
clamp
to
get
good
metal
to
metal
contact.
Replace
contact
tip
(see
gun
Owners
Manual).
An
overload
condition
occurred.
Release
gun
trigger
(see
Section
4-3).
Have
Factory
Authorized
Service
Agent
check
main
control
board
and
main
rectifier.
Low
weld
output.
Connect
unit
to
proper
input
voltage
or
check
for
low
line
voltage
(see
Section
2-12).
Check
input
voltage
jumper
links
and
correct
position
if
necessary
(see
Section
2-12).
Have
Factory
Authorized
Service
Agent
check
main
control
board.
Fan
motor
does
not
run.
Have
Factory
Authorized
Service
Agent
check
fan-on-demand
circuit.
Low,
high,
or
erratic
wire
speed.
Readjust
front
panel
settings
(see
Section
3-1).
Change
to
correct
size
drive
rolls
(see
Section
4-4).
Readjust
drive
roll
pressure
(see
Section
2-13).
Replace
inlet
guide,
contact
tip,
and/or
liner
if
necessary
(see
gun
Owners
Manual).
Check
position
of
input
jumper
links
(see
Section
2-12).
Have
Factory
Authorized
Service
Agent
check
main
control
board.
No
wire
feed.
Reset
circuit
breaker
CB1
(see
Section
4-2).
Turn
Wire
Speed
control
to
higher
setting
(see
Section
3-1).
Clear
obstruction
in
gun
contact
tip
or
liner
(see
gun
Owners
Manual).
Readjust
drive
roll
pressure
(see
Section
2-13).
Change
to
correct
size
drive
rolls
(see
Section
4-4).
Rethread
welding
wire
(see
Section
2-13).
Check
gun
trigger
and
leads.
Repair
or
replace
gun
if
necessary
(see
gun
Owners
Manual).
Have
Factory
Authorized
Service
Agent
check
main
control
board.
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