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IDLER SYSTEM
TROUBLE
A. Engine will not idle down to low
speed.
B. Engine will not go to high idle
when attempting to weld.
I. Scratch Start
II. When using wire feeder with con-
trol cable plugged into amphenol
connector or using amptrol when
trigger is depressed.
C. Engine will not go to high idle
when using auxiliary power.
CAUSE
1. Idler switch in “HIGH” idle position.
2. External load on welder or auxiliary
power.
3. Mechanical problem in idler solenoid
linkage.
4. Idler solenoid position out of adjust-
ment.
5. Faulty wiring in solenoid circuit.
6. Contactor circuit #2 or #4 closed or
shorted. Engine goes to high idle
when contactor circuit closes.
7. Faulty idler solenoid.
8. Low voltage at 224D to ground stud.
(Voltage should be 12-14V DC).
9. Faulty P.C. Board PCB1.
1. Poor work lead connection to work.
2. “WELDING TERMINALS” switch in
wrong position.
3. No open circuit voltage on output
studs.
4. Faulty P.C. Board PCB1.
1. “WELDING TERMINALS” switch in
wrong position.
2. Faulty wiring.
1. No signal from current sensor.
2. Auxiliary power lead less than 100
watts.
3. Faulty idler P.C. Board
WHATTODO
1. Set switch to “AUTO” position.
2. Remove all external loads.
3. Repair.
4. Adjust solenoid as necessary.
5. Check for broken leads #224D,
214.
6. Refer to wiring diagram. Check
related leads and amphenol
connectors.
7. Replace with known good one.
8. Check wiring, battery and battery
charging circuits.
9. Replace P.C. Board with known
good one.
1. Make sure work clamp is tightly
connected to clean base metal.
2. Switch must be in “ALWAYS ON”
position to scratch start.
3. Check leads #247 and #250 for
breaks. Check Switch S6 for faults.
4. Replace P.C. Board with known
good one.
1. Switch must be in “REMOTELY
CONTROLLED” position.
2. Refer to schematic. Check wiring
in #2 and #4 circuit.
1. Check for broken leads in idler
sensing circuit. #3 lead.
2. Idler may not respond with less
than 100 watt load. Set idler
switch to high idle.
3. Replace P.C. Board with known
good one.
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