Troubleshooting SensorSAFE
™
board and sensors
ACTION
Check LEDs on control
board
Place cup under drop
zone
LED STATUS
PWR
CLN
ICE/WTR
OFF
OFF
OFF
ON
ON
OFF
ON
OFF
OFF
ON
OFF
ON
SOLUTION
Check circuit breakers and power switch;
restore power or replace defective switch.
Depress clean switch located under left side of
front cover to return board to normal operation
Troubleshoot appropriate lens/sensor and
replace if required. (see Lens/Sensor
Troubleshooting below)
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
(page 5).
Problem: Does not dispense ice and/or water
ACTION
Check LEDs on control
board
LED STATUS
PWR
CLN
ICE/WTR
ON
OFF
ON
ON
OFF
OFF
SOLUTION
Troubleshoot appropriate lens/sensor and
replace if required. (See Lens/Sensor
Troubleshooting)
If there is power on any output terminal (WTR,
SOL or WM) on control board, replace board.
Problem: Dispenses ice and/or water continuously
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), SOL (power
terminal for dispense gate solenoid), WM (power terminal for wheelmotor), CLN (terminals for clean cycle switch).
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 clean using a
mild, non-abrasive cleaner. Turn dispenser power on and test sensor by moving hands through activation area (no
closer than 3/16") in front of sensor. If LED on board turns on and off, sensor is working properly and dispenser may
be reassembled. If LED does not come on, switch sensor lead on board to working sensor lead 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.
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