Chapter
V
Troubleshooting 33
Full-Digital Control CO2/MAG/MIG Multi-FunctionWelding Machine
ChapterV Troubleshooting
5.1
Welding Machine FaultIndication
In case of any internal fault occurs in the machine, the red indicator light on the welder panel will be on.
Attention
In the process of welding, deviation of current, voltage and setting values are is not necessarily caused by a fault, because the
difference of gas used, welding wires, dry extension, welding method etc. may also lead to the above phenomenon.
5.2
Fault Codes and Solutions
Fault codes are as shown in figure. 5-1.
Fig.5- 1FaultCodeDisplay
Welding power fault codes and solutions are as shown in the following table 5-1.
Table5- 1Welder Fault Reasons and Solutions
Fault Type
Fault Code
Display
Fault Description and Reason
Solutions
Left
Nixie
Tube
Right
Nixie
Tube
Self-Testing
once
Power-On
F00
/
/
Welding Torch
Malfunction
E1
When the welder is switched on, the
welding torch switch is turned off or
damaged.
Turn the torch switch to OFF state or replace the
welding torch switch.
InputPower
abnormity
E3
1
Overvoltage of input power cable
1. Check if the input cable is connected properly.
2. Check if the input power supply is normal.
3. M1 panel is damaged. Replace the main power
board.
E3
2
Undervoltage of input power cable
Over heating
E4
1
Over heating on the output positive
terminal: The terminal is seriously hot
since the welding torch is not fastened
to the European copper head.
Fasten the terminal connector.
E4
2
Over-temperature of subordinate
diode.
1. Strictly follow the rated range of duty cycle.
2. Check the welding power air vent is blocked or
not.
3.Clean the dirt from the radiator;
4. Check if the cooling fan works normally.
E4
3
The primary side radiator is
over-temperature.
* Keypress
Error
(Dex CM3000)
E5
1
～
8
The key is stuck.
Check the related buttons are stuck. Please
check it ,according to the panel serial
number.
* Keypress
Error
(
Dex PM3000
)
E5
1
～
17
The key is stuck.
Please check whether the relevant key is
jammed or not, according to the plate
number.
Output
E6
1. Output short circuit or the current
1. Check the output is short circuit or not (if the
