ESAB Mig 4002cw - Checking Thermal Cutout

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1sxx02cw
In MIG/Mag process, without pressing the switch on the torch -- PWM signal is not
generated -- output signal should be about --9V which means that chopper transistors are
off.
Checking thermal cutout
Thermal cutouts are normally closed and form a loop. When either of the thermal cutouts
opens, a fault must be indicated.
If overheating error is indicated all the time (H2 led on) check connections between thermal
cutouts switches, resistance of switches (should be near 0 Ohm when temperature is below
limit).
NOTE: Not mounted “C” connector also causes an error message.