Troubleshooting - zika TIG160S User Manual

R160A SC-A5

9. TROUBLESHOOTING

Note：Only the qualified technicians are authorized to undertake the maintenance and repair task in case of
machine fault.
9.1 Troubleshooting for TIG160S/TIG200A/TIG 200S/TIG180A/TIG180P/TIG200P/single-phase TIG300S/
single-phase TIG250
Malfunction Phenomena
Turn on the machine, the
power LED is off, the fan
does not work, and no
welding output.
Turn on the machine, the
power LED is on, but the fan
does not work or it stops
working after a few turns,
and there is no welding
output.
Turn on the machine, the fan
works, the protection LED is
off, but there is no HF
discharge rustling, and arc
cannot be ignited even by
scraping.
Turn on the machine, the
protection LED is off, there
is HF discharge rustling, but
no welding output.
1. Check if the power switch is damaged.
2. No input power.
3. Check if the input cable is well connected.
1. Overvoltage protection occurs because the machine is wrongly
connected to 380V power supply. Connect the machine to the 230V
power supply and restart the machine.
2. The 220V is unstable (The input cable is overly thin or overly long.) or the
input cable is not well connected to the mains power supply, which lead to
overvoltage protection. Replace with a cable of bigger cross section or
reconnect the input cable. Shut down the machine, and restart it after 2~3
minutes.
3. The power switch is switched too frequently in a short time, which lead to
overvoltage protection. Shut down the machine, and restart it after 2~3
minutes.
4. Check if the switch wire is loosely connected to the power PCB, and
reconnect it if necessary.
5. The 24V relay on the power PCB is not closed or is damaged. Check the
24V power supply and relay, and replace the relay if it is damaged.
1. Check if the voltage of the power PCB to the anode and cathode of VH-07
on the MOS board is about DC308V.
1) Check if the connecting wire of the rectifier bridge is not well
connected.
2) Check if creepage exists in some of the four electrolytic capacitors
(470UF/450V) on the power PCB, and replace them if necessary.
2. There is a LED for the auxiliary power supply on the MOS board. If the
LED is off and the auxiliary power supply does not work, find out the
solution.
3. Check if any loose contact exists inside the machine.
4. Check if the control circuit fails. Find out the solution or contact your
supplier.
5. Check if the control wire of the torch is broken.
1. Check if the torch cable is broken.
2. Check if the earth cable is broken or is not connected to the workpiece.
3. Check if the "+" output terminal or gas-electric output terminal of the torch
is not well connected to the joint inside the machine.
OPERATORS' MANUAL · TIG SERIES
Cause and Solution
13