Tweco 300 TS Arcmaster(April2006) - Manual (Page 58)

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Description Possible Cause Remedy Remarks
11 E93 error code displayed
Memory chip (EEPROM) on
control PCB can not
read/write weld parameters.
Memory chip (EEPROM)
error.
Have an accredited
Thermal Arc Service
Agent check the
control PCB.
Weld current ceases.
Buzzer sounds
constantly. Switch
machine OFF.
12 E94 error code displayed
Temperature sensor TH1 for
IGBTs or sensor TH2 for
secondary diodes
are open circuit.
The Welding Power
Source’s temperature
sensors have
malfunctioned.
Have an accredited
Thermal Arc Service
Agent check or replace
the temperature
sensors.
Weld current ceases.
Buzzer sounds
constantly.Switch
machine OFF.
13 E99 error code displayed
Mains supply (input) voltage
has been turned OFF but
control circuit has power
from the primary capacitors.
A
B
Main ON/OFF switch
on machine has been
turned OFF.
Mains supply (input)
voltage has been
turned OFF.
A
B
Turn ON/OFF switch
ON.
Have an accredited
Thermal Arc Service
Agent or a qualified
electrician check the
Mains voltage and
fuses.
Weld current ceases.
Buzzer sounds
constantly.Must
switch machine OFF
then ON to reset
E99 error.