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ENTRON Controls, LLC. 700230D
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6.2 Non-Error Code Issues
TROUBLE POSSIBLE CAUSES REMEDIES
Power Switch ON but
no display
1. Fuse F1 or F2 control fuse or
F6 on Power PCB1 blown
2. Defective Circuit Breaker
3. Defective Power Supply PS1
4. Defective Timer
1. Replace Fuses.
2. Replace Circuit Breaker.
3. Replace Power Supply PS1.
4. Replace Timer.
Control will not initiate 1. Initiation switch(es) defective
2. Loose or broken wire(s) at initi-
ation switch(es)
3. Fuses F7 - F9 valve fuses
blown.
4. Defective Timer or Power PCB
5. No data in selected schedule
1. Replace switch(es).
2. Check for loose or broken wire(s) at
initiation switch(es) and at FS1, FS2.
3. Replace fuses.
4. Replace Timer or Power PCB.
5. Select correct schedule or program
schedule.
6. Check valve solenoid coil.
Control initiates;
WELD LED on;
Power PCB comes
on, but electrodes do
not close.
1. Solenoid valve circuit mis-
wired or broken wires
2. Hydraulic (or air) line blocked
3. Bad Valve
1. Check terminals SV1-3, or SV1-3
VL1-2 on PCB2 and associated wir-
ing (see Wiring Diagram).
2. Check pressure.
3. Repair or replace air accessories.
Control does not com-
plete a sequence, but
welder head or arms
close in response to
first stage.
1. 2
nd
stage is not closing.
2. Defective Timer
1a. Check 2
nd
stage switch and connec-
tions.
1b. Check for proper operation of Pilot
switch. Verify First Stage closes be-
fore Second Stage.
2. Replace defective Timer.
Control initiates but
stays in SQUEEZE.
1. Pressure Switch and/or 2
nd
stage and/or interlock is not
closing.
2. Defective Timer
1a. Check for defective or malfunction-
ing Pressure Switch and set point
and/or 2
nd
stage and/or interlock.
1b. If feature is not used, remove from I/
O Map.
2. Replace Timer.
Control initiates and
sequences properly,
but solenoid valve
chatters.
1. Solenoid valve coil
2. Defective Timer or AC Valve
PCB2 .
1a. Check that AC valve supply voltage
is not varying below tolerance, -15%.
1b. Check if valve coil is proper voltage.
1c. Insufficient air pressure
1d. Loose connections in valve wiring
2. Replace Timer or PCB2.
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