Led Diagnostic Information; Troubleshooting The Control Interface - Graco HydroShield WMBL00 Instructions - Parts Manual

Problem
Problem Problem
Other issues
Paint build-up on the isolation
valve stem.
LED LED Diagnostic LED Diagnostic Information Diagnostic Information
The following LED signals, diagnoses, and solutions apply to the control interface.
LED Status LED LED Status Signal Status Signal Signal
Green on
Yellow
Red solid
Red flashing fast
Red flashing slow
Red flashes three times, pauses,
and then repeats
Troubleshooting the
Troubleshooting Troubleshooting
Problem Problem Problem
The control interface is not on.
The control interface has power
but does not function.
Red module status LED stays on
constantly even after power cycle.
3A7312D
Diagnosis
Diagnosis Diagnosis
1. Dirty wash fluid can no longer
clean properly.
2. The U-cup seals are not wiping
the isolation valve stem clean.
3. The isolation valve stem (222)
o-ring is not sealing fully.
Information
Diagnosis Diagnosis Diagnosis
The system is powered up.
Internal communication is in
progress.
Hardware failure.
Software is uploading.
Token error
Invalid rotary switch position (FCM
and CGM only)
the Control Control Interface Interface
the Control Interface
Cause Cause Cause
Power is not on.
Loose or disconnected CAN cable. Tighten or connect CAN cable.
Hardware failure.
Hardware failure.
Troubleshooting
Solution
Solution Solution
1. Follow the steps in
the Wash Fluid, page
2. Replace wash fluid U-cups as
seen in repair section.
3. Replace the isolation valve
stem o-ring as described in
Replace the Isolation Valve
Stem O-rings, page
Solution Solution Solution
—
—
Replace module.
—
Remove token and upload the
software token again.
Change the rotary switch position
on the control module (inside
the air or speed controller) to a
valid position, and then restart the
system.
Solution Solution Solution
Turn power supply on.
Replace.
Replace.
Replace
69.
97.
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