-
19
-
№
TROUBLE
CAUSES
WHAT TO DO
1
Indicator light does
not light on and
doesn’t work when
machine switches on.
(1)Phase missing
(2)Fuse size
(
2A
)
breaks
(3)Input cable break down
(1)Inspect power source
(2)Inspect fan, transformer
for
ZKB/QDB
and
control board are in good
condition or not
(3) Inspect cable
2
Circuit Breaker trips
automatically
while
welder working on
without big welding
current for long time
The
following
components
may probably damaged
:
IGBT
module, 3 phase rectified
module, output diode module,
and other components
Short circuit
(1) Inspect and replace
(2)When IGBT module
breakdown,
check
if
resistors
12Ω. 5.1Ωand
SR160 on driving board are
damaged or not.
3
Welding current is not
stable.
(1)Phase missing
(2)Main
control
board
is
damaged.
(1) Inspect power source
(2) Inspect and replace
4
Welding current is not
adjustable.
(1) Conductive wire broken.
(2)Main
control
board
is
damaged.
(3) Encoder is damaged
Inspect and replace
5
Display
801
protection code (over
voltage)
(1)Secondary IGBT module is
damaged
(2)Main control board is
Damaged
Replace secondary IGBT
module and main control
board
6
Display 802 or 803
protection code (over
current)
(1)Secondary IGBT module is
damaged
(2)Main
control
board
is
damaged
Replace secondary IGBT
module and main control
board
7
Display
804
Protection
code
(overheat)
(1)Welding current is too large
(2)Environmental temperature
is too high.
(3)Thermal switch is damaged
(1)Working in open load,
idle and cooling down
(2) Replace thermal switch
8
Display
805
protection code
(1)Torch trigger has been
pushed for a long time in
open load
(2)Welding torch trigger or
foot pedal switch is damaged
(1) Inspect the torch or foot
pedal switch and replace it
(2) Release the trigger
9
Display
805
protection code (water
insufficient)
(1) No water supply
(2) Bad water circulation
(3)Water
valve,
water
circulator
or
torch
are
damaged
(1)Connect to water supply
(2)Inspect water circulation
(3)Replace
the
valve,
circulator or torch
Table 8: Trouble Shooting
Содержание WT - 315 DI
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