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3. Faulty Dispenser
PROBLEM POSSIBLE CAUSE REMEDY
[1] a) 1. Ice block or bridge. 1. Remove all ice from storage
bin when not using ice
dispenser for a long time.
2. Incorrect wiring. 2. Correct wiring.
b) Agitator 1. Deformed due to ice
block or bridge.
1. Replace.
c) Solenoid 1. Coil winding opened. 1. Replace.
d) Ice switch or dispensing
sensor.
1. Bad contacts. 1. Check for continuity and
replace.
e) Ice Dispensing Relay 1. Bad contacts. 1. Check for continuity and
replace.
[2] a) Water Valve
(Dispensing)
1. Clogged filter. 1. Clean.
b) Water Dispensing
Sensor
1. Bad circuit. 1. Check for continuity and
replace.
[3] Ice keeps being
dispensed.
a) Shutter 1. Faulty adjustment. 1. With shutter closed, lock
shutter in place by securing
with two screws at the lower
part of the solenoid and two
screws under solenoid.
b) Ice Switch
Dispensing Switch
1. Contacts fused. 1. Replace.
Storage BinNo ice is dispensed.
No water is dispensed.
[a] Optical Sensor Description
This model incorporates touch-free optical sensors to control ice and water dispensing. The
sensors operate by using an emitter and two receivers encased in a waterproof sensor
housing. They are designed to operate in normal lighting conditions. Direct sunlight,
however, may cause the sensors to malfunction. The sensors will work with most shades
(colors) of cups with a sensing distance of 45 to 65 mm. In certain water conditions, the
lenses of the sensor may become scaled. Scale can block the sensor and affect the sensing
operation. This scale can be removed by using a solution of Scale Away (6 fl. oz per 1 gal.
of water) or other non-abrasive cleaner.
This DCM uses a different control board (part number 2A2867-01) than the push button style
of DCM. This board provides an internal power source for the sensing circuit and has an
additional connector (K5). This board is not interchangeable with the control board used on
the push button version. When troubleshooting the sensor operation, we will be concerned
with the K5 and K2 connectors on the control board. The K2 connector will supply line
voltage (115VAC) to the ice dispensing motor and ice dispensing solenoid and 24VAC to
the water dispense solenoid. The K5 connector provides the input and output from the
sensors.
These sensors control water dispense and ice dispense in both the portion and continuous
dispense operation. The ice dispense time is limited to 60 seconds regardless of whether
the customer is using the “Continuous” or the “Portion Control” function. This non-
adjustable, maximum timer prevents continuous dispense if someone inadvertently leaves
an object in front of the dispense sensor.