Tweco 300 ACDC Arcmaster - Manual (Page 58)

52
Description Possible Cause Remedy Remarks
10 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.
11 E85 error code
displayed
Pre-charge
abnormality.
Due to malfunction
inside the Welding
Power Source, primary
capacitors are not
charging correctly. Have an accredited
Thermal Arc Service
Agent service the
machine. No weld current
is available.
Buzzer sounds
constantly. Switch
machine OFF then
ON to reset E85 error.
12 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.
13 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.
14 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.
Table 12-1 (continued). Power Source Error Codes