Tweco 400 MST Arc Master - Manual (Page 36)

8
POWER SOURCE ERROR CODES
8 – 1
Power Source Error Codes
Description Possible Cause Remedy Remarks
1 E01 error code displayed
Temperature sensor TH1
(protects IGBTs) is
greater than 80°C for
about 1 second.
A The Welding Power
Source's duty cycle has
been exceeded.
B Fan ceases to operate.
C Air flow is restricted by
vents being blocked.
A Let Power Source cool
down then keep within its
duty cycle.
B Have an Accredited
Thermal Arc Service
Agent investigate.
C 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 70°C for about
30 seconds.
2 E02 error code displayed
Temperature sensor TH2
(protects secondary
diodes) is greater than
80°C for about 1 second.
A The Welding Power
Source's duty cycle has
been exceeded.
B Fan ceases to operate.
C Air flow is restricted by
vents being blocked.
A Let Power Source cool
down then keep within its
duty cycle.
B Have an Accredited
Thermal Arc Service
Agent investigate.
C 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 70°C for about
30 seconds.
3 E03 error code displayed
Primary (input) current
too high.
A Primary current is too
high because welding arc
is too long.
B Mains supply voltage is
more than 10% below
nominal voltag.
A Reduce length of welding
arc.
B 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.
7 E81 error code displayed
Wrong Primary supply
(input) voltage
connected.
When 3 phase machine is
first turned on with the wrong
Primary supply (input)
voltage connected. Have an Accredited Thermal
Arc Service Agent or a
qualified electrician check
the Mains voltage. No weld current is available.
Buzzer sounds constantly.
Switch machine off.
8 E82 error code displayed
Link switch plug not
connected.
Link switch plug not
connected. Have an Accredited Thermal
Arc Service Agent check
connector plug on input PCB. No weld current is available.
Buzzer sounds constantly.
Switch machine off.
9 E83 error code displayed
CPU checks mains
supply (input) voltage
when the on/off switch
on rear panel of machine
is turned ON.
The Primary supply (input)
voltage fluctuates and is not
stable. Have an Accredited Thermal
Arc Service Agent check
connector plug on input PCB
and the Mains voltage. No weld current is available.
Buzzer sounds constantly.
Switch machine off then on to
reset E83 error.