Mosa Magic Weld 200 - Page 46

8. Troubleshooting
42
Issue Possible cause Solution
Welding current not regular or
not constant
1) Faulty welding control board
2) Faulty Hall sensor
3) Chopper bridge short circuit
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.
Engine always idling
Engine always at maximum
speed
1) Faulty welding control board
2) Auto Idle - Economizer system
failure
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.
Table (1)
Magic Weld 200 and Magic Weld 250
Winding resistors at 20 °C
Outputs mΩ
Welding 20.5
YellowCablesR1–S1–T1Auxiliary 560
BlackCablesR2–S2–T2Auxiliary 560