Tweco 300 ACDC Arcmaster - Manual (Page 56)

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SECTION 12. POWER SOURCE ERROR CODES
Description Possible Cause Remedy Remarks
1 E01 error code
displayed
Temperature sensor
TH1 (protects IGBTs)
is greater than 80ºC
for about 1 second.
A
B
C
The Welding Power
Source’s duty cycle
has been exceeded.
Fan ceases to operate.
Air flow is restricted by
vents being blocked.
A
B
C
Let Power Source cool
down then keep within
its duty cycle.
Have an accredited
Thermal Arc Service
Agent investigate.
Unblock vents then
let Power Source
cool down.
Weld current ceases.
Buzzer sounds
constantly.
Fan operates at
max speed.
E01 resets when TH1
decreases to 70ºC for
about 30 seconds.
2 E02 error code
displayed
Temperature sensor
TH2 (protects
secondary diodes) is
greater than 80ºC for
about 1 second.
A
B
C
The Welding Power
Source’s duty cycle
has been exceeded.
Fan ceases to operate.
Air flow is restricted by
vents being blocked.
A
B
C
Let Power Source cool
down then keep within
its duty cycle.
Have an accredited
Thermal Arc Service
Agent investigate
Unblock vents then
let Power Source
cool down.
Weld current ceases.
Buzzer sounds
constantly.
Fan operates at
max speed.
E02 resets when TH2
decreases to 70ºC for
about 30 seconds.
3 E03 error code
displayed
Primary (input)
current too high.
A
B
Primary current is too
high because welding
arc is too long.
Mains supply voltage
is more than 10%
below nominal voltage
A
B
Reduce length of
welding arc.
Have an accredited
Thermal Arc Service
Agent or a qualified
electrician check for
low Mains voltage.
Weld current ceases.
Buzzer sounds
constantly.
Switch machine OFF
then ON to reset
E03 error.
4 E04 error code
displayed
Output voltage
exceeds the
secondary voltage
specification.
TIG torch cable and/or
work lead are too long
or leads are coiled. Reduce the length of
the TIG torch cable
and/or work lead or
un-coiled leads. Weld current ceases.
Buzzer sounds
constantly.
Switch machine OFF
then ON to reset
E04 error.
Table 12-1. Power Source Error Codes