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8-12. Voltmeter/Ammeter Error Displays
Use the Voltmeter/Ammeter error displays to diagnose and correct fault conditions.
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When an error is displayed, normally weld output has stopped but generator power output may be okay.
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To reset error displays, stop unit and then restart. See below to reset CHEK REMT display.
Error Display
CHEK REMT
Indicates a remote device connected to the Remote Receptacle may be faulty. CHEK REMT is also displayed whenever a
remote device has been connected to the Remote Receptacle and then disconnected. Clear fault by stopping and restarting
the unit, or by pressing and releasing the Adjust Control/Select button. If problem continues, have Factory Authorized Service
agent check the remote device and main control board PC1.
IGBT 1SHT
Indicates the thermistor in IGBT module 1 has shorted. Have Factory Authorized Service Agent check unit.
IGBT 1OPN
Indicates the thermistor in IGBT module 1 is open. Have Factory Authorized Service Agent check unit.
IGBT 2SHT
Indicates the thermistor in IGBT module 2 has shorted. Have Factory Authorized Service Agent check unit.
IGBT 2OPN
Indicates the thermistor in IGBT module 2 is open. Have Factory Authorized Service Agent check unit.
IGBT TEMP
Indicates an IGBT module has overheated. If this display is shown, check generator cooling system and/or reduce duty cycle.
Keep engine access door closed when running unit to maintain proper cooling airflow past module. Allow unit to cool before
restarting. If problem continues, have Factory Authorized Service Agent check unit.
MAX POWR
Engine power limit exceeded, causing weld output to be temporarily reduced. Error clears after 5 seconds.
S/W ERR
Software version mismatch occurred. Reload software update. If error does not clear, have Factory Authorized Service
Agent check unit.
S/W BLD
Software build mismatch occurred. Reload software update. If error does not clear, have Factory Authorized Service Agent
check unit.
COMM LOSS
Indicates a communication loss between control boards on dual operator units. Parallel mode will not function. Error can
be cleared by pressing and releasing the Adjust Control/Select button. Unit can operate in dual operator mode only after
clearing error. If error does not clear, have Factory Authorized Service Agent check unit.
Notes
OM-279640 Page 62
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Complete Parts List available at www.MillerWelds.com
IGBT
Description
TEMP
Display Example
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