Owner`s manual

. A complete Parts List is available at www.MillerWelds.com
OM-253 392 Page 39
Message RemedyError
SHORTED 6-PIN REMOTE
ERROR
The 6-pin remote has been held down on power
up, or the remote has been held too long without
initiating an arc.
Release the 6-pin remote.
BRIDGE CURRENT ERROR Too much current has passed through the inverter
bridge circuit of the unit.
Cycle the power to clear this error. If this error
persists after a power cycle, contact Miller Electric
Mfg. Co. service department.
PRIMARY THERMISTOR
ERROR
The primary circuit thermistor is reading too high or
too low for a valid temperature
Contact Miller Electric Mfg. Co. service department.
SECONDARY THERMISTOR
ERROR
The secondary circuit thermistor is reading too high
or too low for a valid temperature.
Contact Miller Electric Mfg. Co. service department.
PRIMARY VOLTAGE ERROR The primary voltage has exceeded the maximum
allowable limit.
Reduce the primary voltage to an acceptable level.
PRIMARY CURRENT ERROR Too much current has passed through the primary
circuit of the unit.
Cycle the power to clear this error. If this error
persists after a power cycle, contact Miller Electric
Mfg. Co. service department.
PRIMARY BOOST NOT READY The primary boost has not successfully been
established.
Cycle the power to clear this error. If this error
persists after a power cycle, contact Miller Electric
Mfg. Co. service department.
7-5. Troubleshooting
Trouble Remedy
No weld output; unit completely
inoperative.
Place line disconnect switch in On position.
Check and replace line fuse(s), if necessary, or reset supplementary protector.
Be sure power cord is plugged in and that receptacle is receiving input power.
No weld output; unit is on.
Check and secure loose weld cable(s) into receptacle(s).
Check and correct poor connection of work clamp to workpiece.
Unit overheated causing thermal shutdown. Allow unit to cool with fan On (see Section 4-5,4-6 and
4-7).
Reduce duty cycle or amperage.
Check and correct blocked/poor airflow to unit (see Section 3-2).
Turn Power Off and back On again. If light continues to flash, check with Factory Authorized Service
Agent.
Line voltage too high or too low. Line voltage must be within 10%.
Remote trigger left on. Turn off remote trigger, wait five seconds, and restart operation.
Erratic or improper welding arc or
output.
Use proper size and type of weld cable (see your Distributor).
Clean and tighten weld connections.
Verify electrode polarity; check and correct poor connections to workpiece.
Fan not operating. Unit not warmed up enough to require fan cooling.
Check for and remove anything blocking fan movement.
Have Factory Authorized Service Agent check fan motor and control circuitry.
Stick welding problems: Hard starts;
poor welding characteristics; unusual
spattering.
Use proper type and size of electrode.
Verify electrode polarity; check and correct poor connections.
Make sure a remote control is not connected.
TIG welding problems: Wandering arc;
hard starts; poor welding characteris-
tics; spattering problems.
Use proper type and size of tungsten.
Use properly prepared tungsten.
Verify electrode polarity.
TIG welding problems: Tungsten
electrode oxidizing and not remaining
bright after welding.
Shield weld zone from drafts.
Check for correct type shielding gas.
Check and tighten gas fittings.
Verify electrode polarity.