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8 FAULT--TRACING
Try these recommended checks and inspections before sending for an authorised
service technician.
Type of fault Action
No arc. S Check that the mains power supply switch is turned on.
S Check that the welding current supply and return cables are
correctly connected.
S Check that the correct current value is set.
S Check that the fuse is intact.
The welding current is interrup-
ted during welding.
S Check whether the thermal cut--outs have tripped (indicated
by the orange lamp on the front panel).
S Check the mains power supply fuses.
The thermal cut--out trips fre-
quently.
S Check to see whether the dust filter is clogged.
S Make sure that you are not exceeding the rated data for the
power source (i.e. that the unit is not being overloaded).
Poor welding performance. S Check that the welding current supply and return cables are
correctly connected.
S Check that the correct current value is set.
S Check that the correct wire is being used.
S Check the mains power supply fuses.
9 LISTOFFAULTCODES
Fault
code
Description Welding data
unit
Power unit
1 EPROM memory error x x
2 RAM memory error x x
3 External Read/Write RAM memory error x
4 5 V power supply x x
5 High DC intermediate voltage x
6 High temperature x
7 High primary current x
8 Mains power supply 1* x x
9 Mains power supply 2* x
10 Mains power supply 3* x
12 Communication error (warning) x x
14 Communication error (bus off) x
15 Messages lost x x
18 Lost contact with the power unit x
19 Incorrect set values in external RAM x
20 Unacceptable settings stored in RAM x
21 Incompatible settings stored in RAM x
22 T ransmitter buffer overflow x
23 Receiver buffer overflow x
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