Tweco 300 DC Arcmaster - Manual (Page 66)

ARCMASTER 300 ACDC
12-4 February 22, 2006
E94 error code
displayed
Temperature sensor
TH1 for IGBTs or
sensor TH2 for
secondary diodes
are open circuit.
E99 error code
displayed
A Main on/off switch
on machine has
been turned off
A Turn on/off switch
on.
Mains supply
(input) voltage has
been turned off but
control circuit has
power from the
primary capacitors. Mains 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.
Have an Accredited
Thermal Arc Service
Agent check or
replace the
temperature
sensors Weld current
ceases. Buzzer
sounds constantly.
Switch machine off.
14 Weld current
ceases. Buzzer
sounds constantly.
Must switch
machine off then on
to reset E99 error.
13 The Welding Power
Source’s
temperature
sensors have
malfunctioned.
Table 12-1 (continued): Power Source Error Codes