Mosa MAGIC WELD 200 Use And Maintenance Manual page 46

Issue
Welding current not regular or
not constant
Engine always idling
Engine always at maximum
speed
Table (1)
Magic Weld 200 and Magic Weld 250
Winding resistors at 20 °C
Outputs
Welding
Yellow Cables R1 – S1 – T1 Auxiliary
Black Cables R2 – S2 – T2 Auxiliary
42
Possible cause
1) Faulty welding control board
2) Faulty Hall sensor
3) Chopper bridge short circuit
1) Faulty welding control board
2) Auto Idle - Economizer system
failure
1) Request the intervention of the
Support Service to replace the
board.
2) Request the intervention of the
Support Service to replace the Hall
sensor.
3) Request the intervention of the
Support Service to replace the
chopper bridge.
1) Request the intervention of the
Support Service to replace the
board.
2) Check the resistance of the
solenoid winding, it must be about
10 Ohms.
Replace.
Request the intervention of the
Support Service.
mΩ
20.5
560
560
8. Troubleshooting
Solution