Hyundai
10
tig-
160/200
Malfunction
Cause and Solution
Power indicator is not lit, fan does
not work and no welding output.
1. Power switch is out of work.
2. Check if electrify wire net (which is connected to input cable) is in work.
3. Check if input cable is out of circuit.
Power indicator is lit; fan does not
work or revolve several circles, no
welding output.
1. Maybe the machine is wrongly connected to 380V power and it causes machine to be in protection circuit.
Connect to 220V power and operate machine again.
2. 220V power is not stable,(input cable is too slender)or input cable is connected to electrify wire net because
machine is in protection circuit. Add the section of cable and tighten input connector firmly. Close machine for
2-3 minutes then open it again.
3. Cable loosens from switch to power panel. Tighten them again.
4. Open and close power switch constantly in short time because machine is in protection circuit Close machine
2-3 minutes then open it again.
Main circuit 24V relay of power panel is not close or has been damaged. Check 24V power source and relay. If
relay has been damaged, replace it with same model.
Fan is working, indicator is not lit
and sound of HF arc-striking
cannot be heard, wiping welding
cannot strike arc.
1. Positive and negative electrodes of VH-07 insert component voltage should be about DC308V from power panel
to MOS board.
(1) If circuit is broken and silicon bridge is poorly contacted.
(2) If some of four high electrolytic (about 470UF/450V) of power panel capacitor is leaking.
2. There is a green indicator in auxiliary power of MOS board, if it is not on, auxiliary power is out of work .Check
fault spot and connect with seller.
3. Check if connectors are poorly contacted.
4. Check control circuit and find out reasons or connect with seller.
5. Check if control cable of torch is broken.
Abnormal indicator is not on,
sound of HF arc-striking can be
heard, but there is no welding
output.
1. Check if torch cable is broken.
2. Check if grounding cable is broken or not connected to welding piece.
3. Output terminal of positive electrode or torch electrify loosens from inter-machine.
Abnormal indicator is not lit, sound
of HF arc-striking cannot be heard,
wiping welding can strike arc.
1. Primary cable of arc-striking transformer is not connected to power panel firmly, tighten it again.
2. Arc-striking tip is oxidized or too far, give a good polish to it or change it as about 1 mm between arc-striking
tips.
3. Switch (sticking/argon-arc welding) is damaged, replace it.
4. Some of HF arc-striking circuit components are damaged. Find out and replace it.
Abnormal indicator is lit but there
is no welding output.
1. Maybe it is overheat protection, please close machine first, and then open the machine again after abnormal
indicator is out.
2. Maybe it is overheat protection, wait for 2-3 minutes (argon-arc welding does not has overheat protection
function).
3. Maybe inverter circuit is in fault, please pull up the supply power plug of main transformer which is on MOS
board (VH-07 insert which is near the fan) then open the machine again.
(1) If abnormal indicator is still lit, close machine and pull up supply power plug of HF arc-striking power
source (which is near the VN-07 insert of fan ), then open machine :
a. If abnormal indicator is still lit, some of fieldistor of MOS board is damaged, find out and replace it with
same model.
b. If abnormal indicator is not lit, rise transformer of HF arc-striking circuit is damaged, replace it.
(2) If abnormal indicator is not lit ,
a. Maybe transformer of middle board is damage, measure inductance volume and Q volume of main
transformer by inductance bridge (L=0.9-1.6mH Q>35) .If volume is too low, please replace it.
b. Maybe secondary rectifier tube of transformer is damaged, find out faults and replace rectifier tube
with same model.
4. Maybe feedback circuit is broken.
Output current is not stabilizing or
out of potentiometer control and
sometime is high, sometime is low.
1. 1K potentiometer is damage, replace it.
2. All kinds of connectors are poor contact, specially inserts etc., please check it.
Sticking spatter is much and
caustic electrode of is difficult.
Electrode is connected wrong, exchange grounding cable and handle cable.
Common Malfunction Analysis and Solution:
Summary of Contents for HYTIG-160
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