Selco Genesis 240 TLH, Repair Manual

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In TIG:
if the torch button has been pressed
and and if the front panel FP106 is operating (the torch
button disconnecting relay transmits the command
and the command circuits are operating)
then the red led will be on between the 1st stroke
and 2nd stroke in TIG 2T welding or between the
2nd stroke and 3rd stroke in TIG 4T welding.
Vice versa if the red led is off
then either the torch button does not close the
contact
or electrical continuity of the cables from the
torch button
or the FP106 front panel is not operating
Description of diagnostic indications 117
G 240 TLH (FP106) (see fig. 32) :
In addition to the two leds previously described, there is also a
third led with the following meaning:
FIG. 32
Position
L3
Colour
RED
Status under
normal
conditions
ON with volta-
ge at output
Meaning
In MMA
always on
In TIG on bet-
ween 1st stroke
and 2nd stroke
(in 2-stroke mo-
de) or between
2nd stroke and
3rd stroke (in 4
-stroke mode)
The seven-segment three-digit display also shows the following
error codes (blinking):
Code
10
20
21
23
Meaning
General alarm
Memory error
Keyboard error
Software error
Meanings are as follows:
- 10 has the same meaning as switch-on of the yellow led and
therefore the same applies
- 20, 21 and 23 indicate a problem (hardware, software) on the
front panel FP106 which must therefore be replaced