Thermal Arc ARCMASTER 300 AC/DC Service Manual page 45

Description
9. E82 error code displayed
Rated voltage selection
circuit abnormality.
10.E83 error code displayed
CPU checks mains
supply (input) voltage
when the on/off switch on
rear panel of machine is
turned ON.
11.E85 error code displayed
Pre-charge abnormality.
12.E93 error code displayed
Memory chip (EEPROM)
on control PCB can not
read/write weld
parameters.
13.E94 error code displayed
Temperature sensor TH1
for IGBTs or sensor TH2
for secondary diodes are
open circuit.
14.E99 error code displayed
Mains supply (input)
voltage has been turned
off but control circuit has
power from the primary
capacitors.
Possible Cause
The Primary supply (input)
voltage fluctuates and is not
stable.
The Primary supply (input)
voltage fluctuates and is not
stable.
Due to malfunction inside
the Welding Power Source,
primary capacitors are not
charging correctly.
Memory chip (EEPROM)
error.
The Welding Power
Source's temperature
sensors have malfunctioned.
A. Main on/off switch on
machine has been turned
off
B. Mains supply (input)
voltage has been turned
off.
Table 10-1: Power Source Error Codes
10 – 2
10
300ACDC POWER SOURCE ERROR CODE
Remedy
Have an Accredited Thermal
Arc Service Agent or a
qualified electrician check
the Mains voltage.
Have an Accredited Thermal
Arc Service Agent check
connector plug on input PCB
and the Mains voltage.
Have an Accredited Thermal
Arc Service Agent service
the machine.
Have an Accredited Thermal
Arc Service Agent check the
control PCB.
Have an Accredited Thermal
Arc Service Agent check or
replace the temperature
sensors.
A. Turn on/off switch on.
B. Have an Accredited
Thermal Arc Service
Agent or a qualified
electrician check the
Mains voltage and fuses.
Remarks
No weld current is available.
Buzzer sounds constantly.
Switch machine off then on
to reset E82 error.
No weld current is available.
Buzzer sounds constantly.
Switch machine off then on
to reset E83 error.
No weld current is available.
Buzzer sounds constantly.
Switch machine off then on
to reset E85 error.
Weld current ceases.
Buzzer sounds constantly.
Switch machine off.
Weld current ceases.
Buzzer sounds constantly.
Switch machine off.
Weld current ceases.
Buzzer sounds constantly.
Must switch machine off
then on to reset E99 error.