Checker board Control Panel
23
Troubleshooting
Problem
Probable Cause
Remedy
Power ON light located at
the center of the main
printed circuit board not lit
Electrical supply
circuit down
Check power supply circuit for proper voltage.
Check for fuse or circuit breaker fault. Replace as
necessary.
Safety disconnect open Close.
Tranformer fuse blown Check transformer fuses and replace as necessary.
Circuit board input
fuse blown
Check printed circuit board fuse and replace if
necessary.
Fault light on display
panel illuminated
Input voltage does not
match the slide switch
position.
Verify input voltage and set voltage slide switch to
correct input voltage. See Switch Position on Page 13.
Voltage outside the
system limits
Provide external transformer circuit.
Temporary low or
high voltage
Turn Checker board OFF and restart when
"brownout" conditions are corrected.
System is in the
Airflow Configuration
mode
Complete airflow configuration settings and return to
normal mode. See Mode Display on Page 8.
Component failure
Contact your Donaldson Torit representative.
Cleaning Failure fault light
on display panel is
illuminated
Solenoid valve failure
Check solenoid valves for proper operation. Replace
or repair valves as necessary.
Faulty solenoid wiring
Check and correct solenoid valve wiring.
Diaphragm valve
failure
Check diaphragm valves for proper operation.
Replace or repair valves as necessary.
Relay failure
Check for proper output voltage at relays.
Insufficient compressed
air
Check and correct compressed air supply.
Unused relay
Use all relay outputs in sequence.
