Diagnostics - Miller Electric 75 Owner's Manual

7-2. Diagnostics

The following error messages are shown on the
upper and lower displays to indicate specific errors.
Explanations are in the text below:
ERR
SENS TACH
Indicates a voltage Indicates a
sense error. tachometer error.
ERR
FLOW COOL
Indicates a gas Indicates a coolant
flow error. flow error.
ERR SENS
The voltage sense error indicates no
voltage sensing feedback signal. Check
connections at feeder and welding power
source. Press Jog/Purge button to clear
error.
ERR TACH
The tach error occurs 2 seconds after the
loss of tachometer feedback. The motor
speed is regulated through the monitoring of
voltage and current. Press Jog/Purge
button to clear error.
ERR MOTR
The motor error indicates that the motor
has been drawing too much current for too
long. To remedy this, reduce the wire feed
speed or the wire feeder torque load/duty
cycle. Press Jog/Purge button to clear error.
ERR WFS
The wire feed speed error indicates actual
wire feed speed does not match wire feed
speed command. Press Jog/Purge button
to clear error.
ERR ERR
MOTR
Indicates a motor
error.
ERR ERR
FTP
Indicates a file
transfer point error.
ERR STRT
The start error occurs if the user has the
trigger held for more than two minutes
without striking an arc, or if the user holds
the trigger past the postflow phase in a
timed weld. This error also occurs if the
trigger is held when the feeder is powered
up. The error may be cleared by releasing
the trigger, and pressing the Jog/Purge
button.
ERR STOP
The stop error occurs as result of
obstructions in the wire feed system or a
faulty wire drive system. Check wire feed
and wire drive systems. Press Jog/Purge
button to clear error.
ERR FLOW
The flow error indicates no gas flow to the
gun. The error
reestablishing gas flow to the gun, and then
pressing the Jog/Purge button.
ERR COOL
The cool error indicates no coolant flow in
water flow switch option. The error may be
reset by reestablishing coolant flow to the
gun, and then pressing the Jog/Purge
button.
ERR
WFS STRT
Indicates a wire Indicates an arc
feed speed error. start error.
ERR
GND STUK
Indicates a ground Indicates a wire
current error. stuck error.
ERR FTP
The file transfer error occurs if data does
not transfer to the feeder correctly. Press
Jog/Purge button to clear error, and transfer
data to feeder again.
ERR GND
The ground current error occurs if weld
current is detected in the earth ground
connection. May be caused by a conductor
making contact with unit chassis. Check
and repair feeder weld connections. Press
Jog/Purge button to clear error.
ERR STUK
The stuck error occurs if the welding wire
sticks to the workpiece at the end of a weld.
May be caused by poor weld conditions.
The error may be cleared by cutting wire
may be reset by
from workpiece, and pressing the Jog/
Purge button.
ERR PSF
The primary power error occurs if the
primary power circuit inside the feeder is not
functioning
connections. Press Jog/Purge button to
clear error.
ERR ERR
STOP
Indicates an arc
stop error.
ERR ERR
PSF
Indicates a primary
power error.
correctly. Check feeder
OM-228 956 Page 29