24
TROUBLESHOOTING AND FAULT FINDING
Notes: The following operations must be performed by qualified electricians with valid
certifications. Before performing any maintenance or repair work,it is recommended to contact
your local distributor to verify the required qualifications.
Failures and solutions:
Failure Solution
The meter shows nothing;
Fan does not rotate;
No welding output
1. Check that the power switch is on.
2. Power flows through the input cable.
3. Check if the silicon bridge is damaged.
4. Failure of the additional power source on the control board.
The meter shows a value;
Fan works normally;
No welding output
1. Check if all the sockets in the machine are well connected.
2. There is an open circuit or a poor connection at the output
terminal.
3. The torch control cable is severed or the switch is damaged.
4. The control circuit is damaged.
The meter shows a value;
Fan works normally;
Abnormal indicator lights.
1. It might be the over current protection device. Turn off the
power switch; restart the machine after the abnormal indicator
light turns off.
2. It might be the overheating protection device. Wait for about
2-3 minutes until the machine cools down without turning off
the power switch.
3. It might be a multifunction of the inverter circuit.
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