Tweco 300 S Arcmaster - Manual (Page 49)

ARCMASTER ® 300 S
March 31, 2006 12-3
E83 error code displayed
No weld current is available.
CPU checks mains supply (input) voltage when the on/off switch on rear panel of machine is turned ON.
Buzzer sounds constantly. Switch machine off then on to reset E83 error.
E93 error code displayed
Weld current ceases.
Memory chip (EEPROM) on control PCB can not read/write weld parameters
Buzzer sounds constantly. Switch machine off.
E94 error code displayed
Weld current ceases.
Temperature sensor TH1 for IGBTs or sensor TH2 for secondary diodes are open circuit
Buzzer sounds constantly. Switch machine off.
E99 error code displayed
A
M
ain on/off switch on machine has been
turned off
A
Turn on/off switch on.
Weld current ceases.
Mains supply (input) voltage has been turned off but control circuit has power from the primary capacitors
B
M
ains supply (input) voltage has been
turned off
B
Have an Accredited Thermal Arc Service Agent or a qualified electrician check the Mains voltage and fuses
Buzzer sounds constantly. Must switch machine off then on to reset E99 error.
The Welding Power Source’s temperature sensors have malfunctioned.
Have an Accredited Thermal Arc Service Agent check or replace the temperature sensors.
Memory chip (EEPROM) error
Have an Accredited Thermal Arc Service Agent check the control PCB
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
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