Product Manual

Troubleshooting
© MOSA REV.1-04/07
TS 200 DES/EL
M
40
P1 No welding current but
auxiliary output is OK
1) Position of remote control switch
2) Potentiometer defect in welding
current control
3) Welding current signal interrupter
4) Defect card
5) Defect in diode bridge
Problems
Possible cause Solution
1) Check that it is in OFF position if there is no remote control, on
"0N" with remote control inserted.
2) Check the continuity of the welding potentiometer and relative
connections.
3) Check that cables from shunt to card are in perfect state.
4) Replace card.
5) Check the diode or the controlled diodes.
P2 Defect in welding, high and
discontinued sparks
1) Defect in connections between
shunt and potentiometer
2) Defect in diode bridge
3) Defect in card
1) Check the continuity and the state of different connections which
go to the card from the shunt as well as from the potentiometer.
2) Check the diodes and controlled diodes.
3) Replace the card.
1) Check the wiring inside the welder for a short circuit between
cables or to ground.
2) If the wiring is OK, short circuit the condenser to be sure that
it is discharged, disconnect all wires from condenser and,
using an ohmmeter, check that the condenser is not short
circuited.
3) If the condenser box is OK, disconnect all leads from the stator
except for those going to the condenser box and check the
output from the alternator.
If there is no output from the welding winding and the auxiliary
winding, replace the stator.
4) If there is output from all windings reconnect the diode bridge
and check if there is welding current. If not the diode bridge is
defective. If there is welding current connect the auxiliary
power leads one at a time until there is no output; at this point,
the short circuit is in that line..
1) Short circuit in wiring
2) Defective condenser
3) Defective stator
4) Short circuited diode b
WELDING
GENERATION
1) Warning light defect 1) Replace warning light
1) Differential switch not inserted
2) Differential switch malfunction
1) Turn on the switch.
2) Replace the switch.
1) Intervention of thermal switch due
to excessive current.
2) Thermal switch malfunction.
30/11/06 27292-GB
ENGINE
P3 No welding output and no
auxiliary power output
P1 Warning light “POWER ON” off,
but regular voltage at the sockets
P2 Three-phase voltage not present
at the socket but present on other
sockets
P3 No single phase voltage one
socket but reading is normal
on the other sockets.
1) Push in the thermal switch.
2) Replace the thermal switch
1) Disconnect all outputs on the generator except for those on the
condensers and re-start machine; check for voltage on
condensers.
1) Short circuit present on the
generator outputs.
P4 No voltage present
P1 The engine does not start or stops
immediately after startup.
P2 The battery does not charge.
Battery charge warning light (N1)
lit
P3 For other problems, refer to the
attached engine manual
1) Low battery voltage, battery dead
or defective.
2) Presence of air in the fuel supply
circuit.
1) Faulty battery charger
2) Battery charger alternator de-
fective.
1) Check the warning light “battery condition”- Green colour:
battery OK - Black colour: battery to be recharged - White
colour: battery to be replaced. DO NOT OPEN THE BATTERY.
2) Carry out de-aeration on the fuel system. See engine operating
manual.
1) Check the battery charger/regulator, replace if faulty
2) Replace