Miller Electric 625 - Manual (Page 34)

OM-216 244 Page 30
8-4. Troubleshooting Help Aids
1 Stud Count LED
2 Ready LED
3 Output LED
803 618-B
2
3
1
Front Panel
Error Indication
Ready LED Status Possible Symptom Remedy
Normal/None On No problem N/A
HELP 1 Off Malfunction in the primary power cir-
cuit.
Contact a factory authorized service
agent.
HELP 2 Off Malfunction in the thermal protections
circuitry.
Contact a factory authorized service
agent.
HELP 3 Off Unit has overheated. Unit has shut down to allow the fan to
cool it (See Section 3-2). Operation
will continue when the unit has cooled.
HELP 4 Off Trigger circuit is closed when unit was
powered on.
Open trigger circuit and cycle power.
HELP 5 Off The unit has sustained an Open Circuit
Voltage for more than 10 seconds.
Cycle power. Apply a welding load. If
problem persists, contact a factory au-
thorized service agent.
HELP 6 Off Input voltage is either under/low volt-
age or high/over voltage.
DC bus voltage imbalance.
Unit has automatically shut down. Op-
eration will continue when input voltage
is within an acceptable limit. Have an
electrician check the input voltage.
If input voltage is correct, contact au-
thorized factory service agent.
8-5. Troubleshooting - Power Source
Trouble Remedy
No weld output; unit completely inop-
erative.
Place line disconnect switch in On position (see Section 4-2).
Check and replace line fuse, if necessary, or reset circuit breaker (see Section 4-2).
Check for proper input power connections (see Section 4-2).
No weld output. Input voltage outside acceptable range of variation (see Section 4-2).
Unit overheated. Allow unit to cool with fan On (see Section 3-2).
Erratic or improper weld output. Use proper size and type of weld cable (see Section 4-3).
Clean and tighten all weld connections.