Rectifying faults
Error messages
099-00L105-EW501
07.06.2019
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7.3 Error messages
A welding machine error will be signalled by an error code (see table) on the control display. In
the event of an error, the power unit shuts down.
The display of possible error numbers depends on the machine version (interfaces/functions).
• Document machine errors and inform service staff as necessary.
• If multiple errors occur, these are displayed in succession.
Legend for categories (reset error)
a) The error message will disappear once the error has been rectified.
b) The error message can be reset by pressing a context-dependent push-button with the
icon.
c) The error message can only be reset by switching the machine off and on again.
Category
Error
Possible cause
Remedy
a) b) c)
3
Tacho error
Error of wire feeder
Check connections (connec-
tions, pipes)
Permanent overload of the wire
drive
Do not place the liner in tight
radii; check wire core for
smooth movement
4
Excess tempe-
rature
Power source overheated
Allow the power source to
cool down (mains switch to
“1”)
Fan blocked, dirty or defective Check fan and clean or re-
place
Air inlet or outlet blocked
Check air inlet and outlet
5
Mains overvol-
tage
Mains voltage is too high
Check the mains voltages and
compare with the power
source connection voltages
6
Mains under-
voltage
Mains voltage is too low
7
Low coolant
level
Flow rate too low (< = 0.7 l/min)
/ (< = 0.18 gal/min)
[1] [3]
Check coolant flow, clean
water block, remove kinks in
hose package, adjust flow
threshold
Coolant volume too low
Fill coolant
Pump does not run
Turn the pump shaft
Air in the coolant circuit
Vent coolant circuit
Hose package not completely
filled with coolant
Switch machine off / on (pump
runs for 2 min)
Operation with gas-cooled
welding torch
Connect coolant feed and
coolant return (insert hose
bridge); deactivate water
block
Failure of automatic circuit-
breaker
[4]
Press to reset automatic cir-
cuit-breaker
8
Shielding gas
error
[2]
No shielding gas
Check shielding gas supply
Pre-pressure too low
Remove kinks in the hose
package; nominal value:
4-6 bar primary pressure
9
Sec. overvolta-
ge
Overvoltage at output: Inverter
error
Inform Service
10
Earth fault (PE
error)
Connection between welding
wire and machine casing
Remove electrical connection
11
Quick shut-
down
Removing the logical signal
“robot ready” during the pro-
cess
Eliminate errors on the higher-
level control