221 AC/DC
Ultima modifica/Last Update/Letzte Veraenderung: 23/04/2014 Rev1
pagina 15 di 35
PROBLEM
CASE
SOLUTION
When welding the pro-
Make sure the welding current does not Decrease the welding current.
tection devices of the
line set off.
require greater power than the one supplied
by the line.
The remote control is
damaged.
Check that the 4-pin connector ( picture
11) is correctly inserted on the power
board 0070.
The Front Panel could be damaged.
Insert the wires into the connectors correctly
and insert the connectors into their housings.
Should this not be sufficient, replace the front
panel board 0015
The machine does not
strike in HF mode.
The front panel 0015 could be damaged.
The HF board 0027 could be damaged.
Board 0027 wiring connected to board
0015 are disconnected or damaged
HF coil could be damaged or not con-
nected to HF 0027.
Replace front panel board 0015.
Replace board HF 0027.
Connect board cables and if damaged
replace them.
Connect HF coil to the primary circuit using
the 2 wires or replace it.
Gas does not come out
Excessive gas pressure.
from solenoid valve.
Damage solenoid valve wiring.
The solenoid valve control relay on the
front panel is damaged.
No 24 V.
Solenoid valve is damaged.
Remove the gas connection. Carry out a
gas test on the front panel in the TIG pro-
cedure and check opening of the solenoid
valve. Reduce gas pressure. Restore con-
nections and carry out a gas test.
Switch off the machine and disconnect the
plug:
Should there be no continuity, single out
the disconnection and repair it;
Make sure that the wiring contacts are
correctly inserted in the connectors.
The Front Panel must be replaced.
Check continuity between points A/B of the
power board and x/y poles of the connec-
tor that goes to the front panel (picture 10).
After that the solenoid valve or the front
panel must be replaced.
Should the operations carried out not have
a positive outcome, replace the solenoid
valve.
The torch button does-
n’t work.
There is no continuity in the wiring of
amphenol board 0076.
Torch wiring connecting boards 0076
and 0075 is broken or disconnected.
Torch wiring connecting boards 0075
and 0015 is broken or disconnected.
24V wiring connecting power board and
front panel board is damaged or discon-
nected.
Front panel board 0015 is damaged.
Check if the wiring is connected, if con-
nected test the continuity.
Replace wiring
Replace wiring
Replace wiring
Replace wiring
