Electrical Trouble Shooting - Weldtronic TM250C Operating Manual

4.4 Electrical Trouble Shooting

In the event of equipment malfunction, contact an authorized service agent
The following operation requires sufficient professional knowledge on electric aspects and comprehensive
safety knowledge. Make sure the input cable of the machine is disconnected from the electricity supply and
wait for 5 minutes before removing the machine covers Before taking your unit for servicing, check the list
below.
Possible Reason
There is output current when pushing the torch trigger to feed gas, but the wire feeder does notwork.
The control cable of the wire feeder is broken
The wire feeder is clogged.
The wire feeder fails.
The control PCB or wire-feeder power PCB inside
the machine fails
When the torch trigger is pushed, there is gas output and the wire feeder works, but there is no output
current, and the protection LED is off.
The earth cable is not well connected with the
workpiece
The wire feeder cable is not well connected.
The wire feeder or welding torch fails
No response when pushing the torch trigger and the protection LED is off
The welding torch is not well connected with the
wire feeder.
The control cable of the wire feeder is not well
connected with the welding power supply
The torch trigger fails.
The fan does not work or it works abnormally
The mains power supply or the mains supply
cable is not connected
Phase failure
The mains voltage is too low
There is no no-load voltage
The mains voltage is too low.
Phase failure
The no-load voltage is "0", and the overheating LED is on.
Overheating protection
Other malfunction
38
Suggested Solution
Get it repaired or replaced
Unclog it.
Repair it.
Replace it.
Reconnect it.
Reconnect it.
Repair the wire feeder or welding torch
Reconnect it
Reconnect it
Repair or replace the welding torch.
Reconnect the mains supply cable
Solve the phase failure problem.
Welding can be carried out after the mains voltage recovers
Welding can be carried out after the mains voltage recovers.
Solve the phase failure problem.
It will recover automatically after the welding machine is cooled.
Contact the service center of your distributor