WeldKing COOLTIG220 - TIG;STICK Welding Trouble Shooting

Manual no. WDT90100 Page 30
CoolTig - 220
Control transformer short circuit Check and
replace
Solenoid valve short circuit Check and
replace
Cooling fan short circuit Check and
replace
11 The welding current
cannot be adjusted
The welding current
potentiometer on the front panel
loose connection or failure
Repair or
change the
potentiometer
Table 6.1
6-2. TIG/STICK welding trouble shooting
No. Problem Cause Solution
12 Erratic or improper weld
output.
Wrong cable size Choose the right cable
size
13 Cable or receptacle too
hot.
Wrong electrode
holder size
Choose the right size
electrode holder
Poor contact Clean and tighten all