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!! WARNING !!
BEFORE CONNECT POWER SUPPLY, MAKE A CAREFUL VISUAL INSPECTION
INSIDE THE MACHINE , CHECK ALL THE BOARDS AND HARNESSES.
PROBLEMS / SYMPTOMS
THE LINE CIRCUIT BREAKER
TRIPS WHEN POWER SWITCH
IS " ON"
THE MACHINE IS DEAD,
NO OUTPUT, NO LEDs, NO
DISPLAY, NO FAN
THE GREEN POWER ON LED
ON THE FRONT PANEL IS
BLINKING ALL THE TIME
HF IS NOT PRESENT WHEN TIG
HF MODE IS SELECTED
THE MACHINE REGULARLY
OVERHEATS, THE YELLOW
THERMAL LIGHT IS ON
INDICATING A THERMAL
OVERLOAD AND ERROR 10 IS
DISPLAYED
THE MACHINE HAS ALWAYS
FULL OUTPUT CURRENT
ERROR 11 ON DISPLAY
ERROR 06 ON DISPLAY -
GREEN AND YELLOW LEDS
ARE BLINKING ALTERNATIVELY
TROUBLESHOOTING
POSSIBLE AREAS OF
MISADJUSTMENT(S)
• INPUT POWER BRIDGE
IS IN SHORT CIRCUIT
• ELECTROLYTIC
CAPACITORS FAILURE
• INVERTER IGBTs SHORT
CIRCUITED
• THERE IS NO POWER
SUPPLY VOLTAGE
• THE POWER SUPPLY
CABLE IS INTERRUPTED
• LINE SWITCH FAILURE
• THE INPUT BOARD IS
DAMAGED
• THE INPUT VOLTAGE IS
OVER THE RANGE (CHECK
FOR ERROR 01 ON
DISPLAY)
• THE INPUT BOARD IS
DEFECT
• THE HF BOARD IS DEFECT
• CONTROL BOARD IS
DEFECT
• THE WELDING
APPLICATION MAY BE
EXCEEDING THE
RECOMMENDED DUTY
CYCLE OF THE 315DC OR
415DC
• DIRT AND DUST MAY HAVE
CLOGGED THE COOLING
CHANNELS INSIDE THE
MACHINE
• THE AIR INTAKE AND
EXHAUST LOUVERS MAY
BE BLOCKED DUE TO
INADEQUATE CLEARANCE
AROUND THE MACHINE
• MAKE CERTAIN THE FAN AS
NEEDED (F.A.N.) CIRCUIT IS
OPERATING PROPERLY
(SEE USER MANUAL F.A.N.
SECTION).
• THE CONTROL BOARD IS
DEFECT
• THE HALL EFFECT PROBE
IS DEFECT OR NOT
CORRECTLY SUPPLIED
• THE WATER COOLER IS
NOT WORKING PROPERLY
• THE INPUT BOARD IS
DEFECT
• THE CONTROL BOARD IS
DEFECT
• INVERTER AUXILIARY
VOLTAGE FAULT
CONDITION DETECTED
31
CHECK
• PERFORM INPUT BOARD
RESISTANCE TEST
• PERFORM THE INVERTER
RESISTANCE TEST
• CHECK THE PHASE INPUT
VOLTAGE ON THE MACHINE
• CHECK THE POWER SUPPLY
CABLE
• CHECK THE LINE SWITCH
• PERFORM THE INPUT BOARD
RESISTANCE AND VOLTAGE
TEST
• CHECK THE INPUT VOLTAGE
• TURN OFF AND ON AGAIN
THE MACHINE TO RESET THE
ERROR CONDITION
• PERFORM THE INPUT BOARD
VOLTAGE TEST
• PERFORM THE HF TEST
• PERFORM THE CONTROL
BOARD TEST
• CHECK AND RESPECT THE
RECOMMENDED DUTY
CYCLE
• CLEAN WITH LOW PRESSURE
DRY AIR THE COOLING
CHANNEL INSIDE THE
MACHINE
• MAKE SURE TO HAVE
ADEQUATE CLEARANCE
AROUND THE MACHINE
• ONE OF THE THERMOSTATS
MAY BE FAULTY.
• CHECK THE FAN
• PERFORM THE CONTROL
BOARD TEST
• PERFORM THE OUTPUT
BOARD TEST
• CHECK THE WATER COOLER
PRESSURE SWITCH AND
PUMP
• PERFORM THE INPUT BOARD
VOLTAGE TEST. CHECK THE
WATER COOLER VOLTAGE
SUPPLY AND THE WATER
ERROR SIGNAL CIRCUIT
• PERFORM THE CONTROL
BOARD VOLTAGE TEST
• PERFORM THE INPUT
VOLTAGE TEST (FOCUS ON
AUXILIARY VOLTAGE
+15VDC)
• PERFORM THE INVERTER
VOLTAGE TEST
RECOMMENDED COURSE
OF ACTION
• REPLACE THE DEFECTIVE
BOARD
• RECONNECT THE POWER
SUPPLY
• REPLACE THE INPUT
POWER CABLE
• REPLACE THE LINE
SWITCH
• REPLACE THE INPUT
BOARD
• CONNECT THE MACHINE
TO A PROPER VOLTAGE
SUPPLY RANGE
• REPLACE THE INPUT
BOARD
• REPLACE THE HF BOARD
• REPLACE THE CONTROL
BOARD
• REPLACE THE FAULTY
TERMOSTAT
• REPLACE THE FAN
• REPLACE THE CONTROL
BOARD
• REPLACE THE OUTPUT
BOARD OR THE HALL
EFFECT PROBE
• REPLACE THE PRESSURE
SWTCH OR THE PUMP
DEPENDING OF THE
CHECK RESULT DONE ON
THE WATER COOLER
• REPLACE THE INPUT
BOARD
• REPLACE THE CONTROL
BOARD
• REPLACE THE INPUT
BOARD
• REPLACE THE INVERTER
BOARD
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