Voltmeter And Wire Feed Speed Meter Operation - Miller Millermatic 251 Owner's Manual

5-2. Voltmeter And Wire Feed Speed Meter Operation

1 Voltmeter
2 Wire Feed Speed Meter
Power Up Status
888
Both meters display at unit power up.
After one second, preset values appear on
both meters. The MIG gun settings (not
spool gun) are always the default at initial
power up of the unit. If the power is reset to
888
quickly, characters other than
pear. To reset, turn power off for at least 3
seconds, then turn power back on.
Welding Status
When either a MIG gun or spool gun trigger
is pressed and a welding arc is established,
the voltmeter displays actual weld voltage.
When the gun trigger is released and
welding arc extinguished, the voltmeter
displays the last actual voltage for 5
seconds and then returns to preset voltage.
If welding resumes before unit displays
preset voltage, actual welding voltage will
appear on the voltmeter.
The wire feed speed meter always displays
preset wire feed speed (IPM).
Gun Selection
The wire feed speed meter will display
preset wire feed speed (IPM) for the
appropriate gun selection either MIG or
may ap-
spool gun. To preset desired wire feed
speed, connect desired gun, press gun
trigger for one second, and release trigger.
The meter preset will be retained by the
meter board until a different gun is
connected and preset is performed or the
unit is turned off and back on. The MIG gun
settings (not spool gun) are always the
default at initial power up of the unit.
Error Messages
Volt Meter Display (HL.P)
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1
2
Wire Feed Speed Display (001)
HL.P 001 − Communication Lost between
Control Board PC1 and Display Board PC2
HL.P 002 − Unit over temperature, unit is in-
operative until temperature is reduced in-
side unit (see Section 6-2)
HL.P 003 − No Open Circuit Voltage (OCV)
detected when either trigger is pulled
HL.P 004 − Gun trigger was engaged for
approximately 2 minutes with no arc
detected, or weld wire is stuck causing a
direct short. If HL.P 004 occurs during
power up, see Section 6-8.
HL.P 005 − Wire feed malfunction. Check
wire feed delivery system (see Section
6-8).
See Section 6-8 for additional information
on all HL.P codes.
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