[D] Water Pan Closes; [E] Freeze Cycle - Hoshizaki DIM-30DE-2 Service Manual

* The defrost completion temperature is adjustable in the maintenance mode (see "3.
[b] MAINTENANCE MODE").

[d] WATER PAN CLOSES

1) When the cube control thermistor senses the evaporator temperature above the
defrost completion temperature, the hot gas valve closes, the fan motor starts, and
the water pan starts to close.
2) The closing backup timer starts counting when the water pan starts to close. If the
hall IC does not turn on within 3 minutes, the display shows "EE" and the unit stops
for 60 minutes. If the error recurs after the unit resumes operation, the display shows
"EE" and the unit shuts down (recorded as "E4" in error history).
* In the initial cycle or when the water temperature is below 13°C, the water valve
opens to supply defrosting water for 10 seconds after the water pan starts to close.

[e] FREEZE CYCLE

1) When the water pan closes and the hall IC turns on, the water valve opens to supply
icemaking water for a specific time. The icemaking water supply time varies between
startup, reset, and the end of bin control cycle.
* The icemaking water supply time and additional water supply time are adjustable
in the maintenance mode (see "3. [b] MAINTENANCE MODE").
2) After icemaking water has been supplied, the pump motor starts.
3) After 30 seconds, the cube control thermistor senses the temperature that will be
added with a predetermined offset value and used as the water temperature in the
freeze cycle, water pan opening cycle, defrost cycle, and water pan closing cycle.
* The offset value for the cube control thermistor temperature is adjustable in the
maintenance mode (see "3. [b] MAINTENANCE MODE").
4) The freeze cycle is considered to be 100% complete when the predetermined target
integrated values are reached.
* The target integrated values (temperature and time) for the freeze completion are
adjustable in the maintenance mode (see "3. [b] MAINTENANCE MODE").
5) To reduce ice forming on the water pan when the freeze completion rate reaches
100% at an ambient temperature below 30°C, the hot gas valve opens and closes
two times for a specific time to raise the water pan temperature. Then, the actuator
motor starts to open the water pan.
While the hot gas valve opens and closes, the freeze cycle is not considered to be
complete and the pump motor and fan motor keep running.
* The ambient temperature setting and hot gas valve opening/closing time are
adjustable in the maintenance mode (see "3. [b] MAINTENANCE MODE").
6) Even if the freeze backup timer counts up (45/60 minutes after water pan starts to
close), the unit stops with the "E1" error when the evaporator temperature is above
0°C.
If the hot gas valve fails to close, the unit may stop with the "E1" error.
* The backup timer setting is adjustable in the maintenance mode (see "3. [b]
MAINTENANCE MODE").
13