Manual no. WDT90100 Page 26
CoolTig - 220
SECTION6TROUBLESHOOTING
6-1. General trouble shooting
No. Problem Cause Solution
1 Power Indication
lamp does not on
after switch on the
main switch
Loose contact at input lead Check contact
situation
Lamp malfunction, poor contact Check contact
situation.
Replace lamp
pr7
Main switch malfunction Check switch,
replace if
necessary
2 Cooling
fan
stops to
rotate
after
machine
has
worked
a period
Power
indication
lamp on
Fan circuit malfunction Check fan
circuit
Fan failure Check fan,
replace if
necessary
The start capacitor of fan
damaged
Change
capacitor
Power
indication
lamp off
See No. 1
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