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COMPONENT DESCRIPTION
E. ICE BIN LEVEL LIGHT CONTROL - BLACK
FOUR POLES CONNECTOR -
AUTOMATIC RESET
The electronic ice bin level control, located into
the ice spout, has the function to stop the operation
of the ice machine when the light beam between
the light source and the sensor gets interrupted
by the flake ice which accumulates in the spout.
When the light beam is interrupted the 6th
YELLOW LED located in the front of the P.C.
BOARD blinks; in case the light beam gets
interrupted for as long as 6 seconds, the ice
machine stops with the glowing-up of the same
YELLOW LED to monitor the full ice bin situation.
The 6 seconds of delay prevents that any minimum
interruption of the light beam due to the regular
ice chuting through the ice spout may stop the
operation of the unit.
As soon as the ice is dispensed out (with the
resumption of the light beam between the two
infrared sensor of ice level control) the YELLOW
LED blinks fast and after 6 seconds the ice
machine resume its operation with the
simultaneous extinguishing the YELLOW LED.
BLINKING - FLASHING ALTERNATE
FIG. 12
OPTICAL ICE LEVEL CONTROL OUT OF ORDER
F.
ICE/WATER OPTICAL DISPENSING
DEVICE - BLUE FOUR POLES CONNECTOR
Located on the front of the dispensing area it
consists of the combination of an infrared
Transmitter and Receiver.
When a glass or a carafe is placed in front of the
Infrared sources, the optical device transmits a
signal to the PC Board that is equivalent to
activate the dispensing drive motor which, in
turn, put in rotation a dispensing vane that pushes
the ice towards a rectangular opening located in
the bottom of the storage bin.
Elapsed the dispensing time (5, 10 or 15 seconds
according to the setting) or after removing the
glass/carafe, the infrared resume its original
condition switching off the dispensing drive motor.
**FIG 12. If Ice Level Sensor is out of order:
Blinking Alternate between 2nd Red & 3rd
Yellow lights.**
H. P.C. BOARD (Data processor)
The P.C. BOARD, fitted in its plastic box located
in the right side of the unit, consists of two separated
printed circuits one at high and the other at low
voltage, protected by three fuses, integrated with
a RE-SET button. Also it consists of six aligned
LEDS monitoring the operation of the machine
and of input terminals for the leads of the sensor
probes as well as input and output terminals for
the leads of the ice maker electrical wires. The
P.C. BOARD is the brain of the system and it
elaborates, through its micro processor, the
signals received from the sensors in order to
control the operation of the different electrical
components of the ice maker (compressor, gear
motor, etc.) as well as the dispensing of the ice
and water.
Ref. to FIG. 10 the six LEDS from left
to right:
2nd RED LED ON :
Unit shut-off due to a too hi-
condensing temperature > 70°C/158°F
2nd RED LED BLINKING:
3 minutes start up delay time
3rd YELLOW LED ON:
Unit shut-off due to the wrong rotation direction
of gear motor or due to the too low speed of
gear motor
3rd YELLOW LED BLINKING:
shut-off due to high evap. temp > -1°C/30°F
after 10 min of operation
Page 14
GEMD270A
Unit
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