Voltmeter/Ammeter Help Displays; Troubleshooting - Miller Electric XMT 350 CC/CV Owner's Manual

6-3. Voltmeter/Ammeter Help Displays

V
1
HE.L P−1
V
2
HE.L P−2
V
3
HE.L P−3
.
All directions are in reference to the front
of the unit. All circuitry referred to is lo-
cated inside the unit.
1 Help 1 Display
Indicates a malfunction in the primary power
circuit. If this display is shown, contact a Fac-
tory Authorized Service Agent.
2 Help 2 Display
Indicates a malfunction in the thermal protec-
tion circuitry. If this display is shown, contact
a Factory Authorized Service Agent.
3 Help 3 Display

6-4. Troubleshooting

Trouble
No weld output; unit completely inop-
erative.
No weld output; meter display On.
Erratic or improper weld output.
No 115 volts ac output at optional du-
plex receptacle or Remote 14 recep-
tacle.
No 24 volts ac output at Remote 14 re-
ceptacle.
OM-2247 Page 24
A
A
A
Indicates the left side of the unit has over-
heated. The unit has shut down to allow the
fan to cool it (see Section 3-3). Operation will
continue when the unit has cooled.
4 Help 5 Display
Indicates the right side of the unit has over-
heated. The unit has shut down to allow the
fan to cool it (see Section 3-3). Operation will
continue when the unit has cooled.
5 Help 6 Display
Indicates operation at maximum input cur-
rent. The unit has a maximum allowable input
Place line disconnect switch in On position (see Sections 4-3 and 4-4).
Check and replace line fuse(s), if necessary, or reset circuit breaker (see Sections 4-3 and 4-4).
Check for proper input power connections (see Sections 4-3 and 4-4).
Input voltage outside acceptable range of variation (see Section 4-5).
Check, repair, or replace remote control.
Unit overheated. Allow unit to cool with fan On (see Section 3-3).
Use proper size and type of weld cable (see Section 4-6).
Clean and tighten all weld connections.
Check for correct polarity.
Reset circuit breaker CB1 (see Section 4-8).
Reset circuit breaker CB2 (see Section 4-8).
V
4
HE.L P−5
V
5
HE.L P−6
V
6
HE.L P−8
current limit. As the line voltage decreases,
the required input current increases. If the line
voltage is too low, the output power is limited
by the input current. When this limit is
reached, the unit automatically reduces out-
put power to continue operation. If this display
is shown, have a qualified electrician check
the input voltage.
6 Help 8 Display
Indicates a malfunction in the secondary
power circuit of the unit. If this display is
shown, contact a Factory Authorized Service
Agent.
Remedy
A
A
A