Service Manual

78 Part Number 000015432 4/18
TOUCHLESS SENSOR ACTIVATED
Step 1 Verify line voltage is present at control board
wires #20 & #22. Note - If a blue indicator light is energized
on the touch pad, the control board has line voltage.
Step 2 Depress each selection on the touch pad.
• 1 or more LEDs do not energize/de-energize when a
selection is pressed - Replace touch pad
• Each touch pad LED energizes/de-energizes as
selections are pressed - Go to next step
Step 3 Verify line voltage is supplied to touchless
sensing control board at wires #49 & #50.
Will Not Dispense
• Disconnect wires from C (common) and NO (normally
open) terminals on the sensor control board.
• Use an ohm meter to verify the switch is opening and
closing. Place hand in front of sensor, if the sensor
activates and closes the switch, the sensor is working
correctly.
• If the sensor does not activate the switch, disconnect
the sensor wire from the sensor control board. Short
+5 and SIG.
• If the contacts close, replace the sensor.
• If the contacts remain open, replace the sensor
control board.