Part No. 729-110-040 Rev. 1.41 | June 2016
© 2016 Nelson Stud Welding, Inc. All Rights Reserved.
45
E005 Regulation
Error
– Short
Circuit
If the control board senses that the current was 150% or higher of the
setting while the control to the power system was at the minimum for
15ms, it will abort the weld and display this error. This will happen if the
current sensing failing for any reason (wiring, power supply, etc). This
exists as a safety mechanism in case current sensing fails.
No
No
Problems (Most Likely to Least Likely)
Damaged connection from current sensor.
Missing voltage supplies at current sensor.
E009 Could Not
Establish Pilot
Arc
At the beginning of the weld, the pilot arc supply is turned on and the gun
is energized. The gun has 20ms to lift (usually lifts in 3ms) and to draw a
pilot arc. If no stud voltage is sensed after 20ms, it is assumed that the
gun didn't lift and the control throws this error. Note - If the gun lifts and
no arc exists, it will try to turn the main current on (and will end up with an
E004 because no arc exists).
No
No
Problems (Most Likely to Least Likely)
Shorted gun control cable.
Mechanical binding of the gun.
Pilot arc board failure. Sometimes will also indicate contact with workpiece incorrectly. Replace pilot arc
board.
Workpiece not directly clamped to output of unit.
Pilot arc circuit. Look for evidence of pilot arc. If there is no pilot arc mark on the work material, replace
the pilot arc board.
Lift height too high or plunge depth (stick-out) is too much. Perform a lift test by pressing the gun against
an insulated surface. Air lift test will not fully test the lift capability of the welder gun coil circuit.
Workpiece vibration sniffing out pilot arc.
E011 Unit Too
Hot
– Please Wait
When the internal temperature sensor trips, the control board disables
welding so as not to allow damage to the unit. This error is displayed
while the unit is in the overtemperature condition and disappears when
it is ready for more welding.
No
No
Problems (Most Likely to Least Likely)
Fan is not functional or is blocked. Check that fan can physically turn and the wiring to the fan. Short
the fan sensor to manually activate the fan. Make sure it works.
Incorrect wiring from overtemp thermostat to control board. Inspect wiring. Measure ~22VDC while
open, near 0VDC while closed.
Overtemp Thermostat sensor failed. Replace sensor.
Faulty wiring connection. Replace wiring.
Summary of Contents for ArcCharger N550C DOMESTIC
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