Samsung SR-S25NTA Service Manual page 57

3. ice-making function
@ Ice-making, which operates until the finish of ice-making in ICE-TRAY after water supply,
issensed by the temperature sensed by Ice-Maker Sensor (may be changed by OPTION).
1) Check the temperature of Ice-Maker Sensor 90 minutes after water is supplied to Ice-Tray.
2) When -10°C_ continues to be sensed by Ice-Maker Sensor for more than 5 minutes, ice-making is
perceived to be finished.
1) At first, ON/OFF state of LEVER S/W is checked to CHECK whether the Ice-Tray is in Full ice
horizontality. When LEVER S/W is in ON state (MICOM PIN #5001""LOW' ), indicating thie Full
ice horizontality, Eject does not operate and is in stand-by. Eject starts to operate 20 minutes after
the change of ON to OFF of LEVER S/W.
2) If it is not the Full ice horizontality (LEVER S/W OFF = MICOM PIN NO #50 "HIGH"), Eject
operation starts immediately. At this time, the Eject operation dispenses ice from the Ice-Tray by
rotating clockwise the Eject Motor and then, twisting the Ice-Tray to the maximum. By the Eject
operation, Check-Ice Lever performs automatically the ascending operation.
3) The maximum twisted state is sensed by the operation of HOR/INVERTER S/W and LEVER S/W. In
Eject condition with horizontality, HOR/INVERTER S/W and Check-Ice are all OFF and Eject operates
by rotating clockwise Eject Motor. While Eject Motor is operating, HOR/INVERTER S/W is changed
from OFF to ON after about 1 second and LEVER S/W is changed to ON after about 3.3 seconds.
When LEVER S/W is not changed to ON even after 6 seconds, problems with MOTOR or LEVER
S/W are perceived and so, Eject operation stops to return to the horizontality.
4) When LEVER S/W is ON at the time that HOR/INVERTER S/W is changed to OFF from ON 15 seconds
before the start of clockwise operation of Motor, it is the maximum twisted point.
When HOR/INVERTER S/W is not changed to OFF from ON even after 15-second operation of Motor,
problems with HOR/INVERTER S/W or MOTOR are perceived and Eject operation stops to retum
to the horizontality.
5)At the time of the maximum twisted state of the Ice-Tray, operation stops for 2 seconds.
6) Counter clockwise rotation of Eject Motor makes the Ice Tray return to the horizontality.
At this time, Check-Ice Lever descends to sense the storage state of ice.
7) On the horizontality, Cycle of Water Supply — Ice-Making — Eject Return to horizontality
repeats.
a Timing Chart of Eject Operation
| Maximum Twisted Point ue Delay time (2 seconds)
1
Return ti
Sis horizontli ty
t