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67
Problem
Welder power switch (circuit breaker)
can not hold on after turned to on
position
When welder power switch is on, no
display in digital meter and fan does
not run
When the welder main power switch
is on ,fan is running ,but no display
in digital meter
When welder power switch is on,
digital meter has reading, but fan
does not run
Overheat warning lamp is lighting,
welding power source has no output
Welder power has no welding output
Problem Cause
What to do
Consult the authorized unimig
service shop
Consult the authorized unimig
service shop
Consult the authorized unimig
service shop
Consult the authorized unimig
service shop
Consult the authorized unimig
service shop
Consult the authorized unimig
service shop
Welding general troubleshooting
Summary of Contents for RazorWeld MS500
Page 72: ...72 Circuit diagram for LN 25P wire feeder adapter ...
Page 73: ...73 Circuit diagram for engine control system ...
Page 74: ...74 Circuit diagram for generator output welding power and auxiliary power ...
Page 75: ...75 Circuit diagram for welding power source ...
Page 76: ...76 Circuit diagram for welding power source ...
Page 81: ...81 ...
Page 82: ...82 ...
Page 83: ...83 ...