Tweco 300 MST Arcmaster - Manual (Page 55)

49
11.0 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
TH1 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 E11 error code displayed
Over Primary supply (input)
voltage at primary capacitors
is exceeded for one second.
Primary supply voltage
is greater than the
nominal voltage
plus 10%.
Have an Accredited
Thermal Arc Service
Agent or a qualified
electrician check the
Primary voltage.
Weld current ceases.
Buzzer sounds constantly.
Error code E11
automatically will reset
when the voltage reduces.
5 E14 error code displayed
Under mains supply (input)
voltage warning primary
capacitors is reduced for
one second.
Mains supply voltage
is less than the nominal
operating voltage
less 10%.
Have an Accredited
Thermal Arc Service
Agent or a qualified
electrician check the
Mains voltage.
Weld current available.
Buzzer sounds
intermittently.
Error code E14
automatically will reset
when the voltage
increases.
6 E12 error code displayed
Under mains supply (input)
voltage primary capacitors is
reduced for one second.
Mains supply voltage is
down to a dangerously
low level.
Have an accredited
Thermal Arc Service
Agent or a qualified
electrician check the
Mains voltage.
Weld current ceases.
Buzzer sounds constantly.
Error code E12
automatically will reset
when the voltage
increases.