tecMIG 450/600
Operating manual Page 51
37. Trouble - shooting
Any remedial action to defective electrical equipment must be carried out by a qualified electrician!
Malfunction/error Cause Remedy
Display
T°C – 01/02/03 – hot
Engine overheated
(See Point 31)
Machine to cool down with a
running fan
Thermal sensor line interrupted Look for and eliminate interruption
Wrong type of machine in the
control box set
Contact service partner
Display
T°C – int – e.g. +56
(See Point 20)
Ambient temperature below -10 ° C
or above +50 ° C
Bring Machine into normal
temperature range
Thermocouple defect in the control
box
Change control box
Sensor repaired
Display (continuously)
Err H2o ---
(To clear switch machine off and
on)
Water tank empty Fill in cooling water with alcohol in
the ratio 4:1
Water flow below 0.25 l / min Check water flow
Torch / pipe
Flow meter is defective Flow meter exchange
Main switch ON
1 or 2 green Indicator lights on the
front plate are not lit
(see control elements)
Failed one or more system phases Check main supply and fuses
Fuse in the front plate defective Change fuse 2A slow
Main switch ON
Green control lamps are light
Control box MC without function
Secondary fuse on auxiliary
transformer defective
Change fuse 6,3A slow
Fuse in control box MC defective Change fuse 6,3A slow
Cable in torch hose pack defective
/ broken
Check 5 pole cable
No function after pressing torch
trigger key
Torch trigger defective Change torch trigger
Torch control line interrupted Check torch control line
Control box MC defective Change control box
Fire feed motor out of service Control box MC defective Change control box
Fire feed motor defective Change wire feed motor
Wiring between control box and
Motor interrupted
Check wiring
Wire buckling between wire feed
rollers and guide tube
Pressure of the wire feed rolls to
big
See chapter 30
Distance from wire feed rollers to
guide tube too far
Check distance / realign wire guide
tube
Irregular wire feed Bad uncoiling of wire Check / refit wire coil
Wire-holding arbour runs heavily Check wire- holding arbour
Wrong wire feed roller Use the right wire feed roller
See chapter 30
Dirty / defective wire guide tube or
spiral
See chapter 30
Cogged / defective current contact
tip
Clean / exchange current contact
tip
Dirty/ rusty welding wire Exchange welding wire
Wire guide tube misaligned with
wire feed roller groove
See chapter 30
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