Troubleshooting - Sensorsafe Board And Sensors - Follett C125A Installation, Operation And Service Manual

Troubleshooting the dispenser – SensorSAFE
Problem: Does not dispense ice and/or water
Action
1. Check LEDs on
control board.
2. Place cup under
drop zone.
Problem: Dispenses ice and/or water continuously
Action
1. Check LEDs on
control board.
Board guide
LEDs, when illuminated, indicate the following: PWR (board power), CLN (cleaning, no dispensing cycle), ICE (ice
dispensing activated), WTR (water dispensing activated).
Terminals: LI (incoming power, hot), L2 (neutral terminals), WTR (power terminal for water solenoid), WM (power terminal
for wheelmotor), CLN (terminals for clean cycle switch).
Note: SOL LED not used in 12 series dispensers.
Lens/sensor troubleshooting
Turn dispenser power switch off. Remove splash panel. Disconnect wires from output (WTR, SOL, WM) terminal(s) on
board. Gently remove appropriate sensor/mounting block assembly from panel by moving block sideways until edge of
block clears retaining tab of panel. Inspect lens and sensor assembly for foreign material and remove using non-abrasive
cleaner. Turn dispenser power on and test sensor by moving hands through activation area (no closer than 3/16"/1.9mm)
in front of sensor. If LED on board turns on and off, sensor is working properly and dispenser can be reassembled. If LED
does not come on, switch sensor leads on board and retest. If the opposite LED comes on, board is defective and must
be replaced. If LED does not come on, sensor is defective and must be replaced.
LED status
PWR CLN
OFF OFF
ON ON
ON OFF
ON OFF
LED status
PWR CLN
ON OFF
ON OFF
™ models
ICE/WTR
OFF
Check circuit breakers and power switch. Restore
power or replace defective switch.
OFF
Press clean switch on lower left side of electrical
enclosure to return board to normal operation.
OFF
Troubleshoot appropriate lens/sensor and replace
if required (see Lens/Sensor Troubleshooting).
ON
Verify power on appropriate output terminal
(WTR, SOL or WM) on control board and replace
board if required. If board tests okay, troubleshoot
appropriate dispenser component.
ICE/WTR
ON Troubleshoot appropriate lens/sensor and
replace if required (see Lens/Sensor
Troubleshooting).
OFF If there is power on any output terminal (WTR,
SOL or WM) on control board, replace board.
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Solution
Solution