Page 15
2-15
#7030768 - Revision B - May, 2015
INTEGRATED SERIES (DRAWERS)
INTEGRATED SERIES (DRAWERS)
Electronic Control Info.
Monitor Ice Making System
During an ice production cycle, the microprocessor observes the power supplied to the water valve solenoids.
NOTES:
• To allow ice to freeze fully and reduce effects of low water pressure, power to the ice maker system is interrupted
for forty-five (45) minutes after each ice harvest. This can be bypassed for service purposes by switching the ice-
maker system OFF, then back ON with the ICE MAKER key.
• Power to the freezer lights is monitored to help control icemaker operation. If a freezer drawer is open, power to
the ice maker system is interrupted, unless the icemaker is filling with water at that time. After the drawer is
closed, power is not allowed to the ice maker system for an additional three (3) minutes, unless the Maximum Ice
Production feature has been initiated.
• When in Sabbath Mode, the ice maker system is disabled.
Monitor Compressor Run Duration, Displays If Service is Needed
The microprocessor observes the changing state of the compressor relays on the control board to determine the
length of compressor run time. Other than during initial pull down, if a compressor runs 100% (Freezer = 6 hours /
Refrigerator = 4 hours), five consecutive times, a fault code is logged, defrost is initiated, and the service icon will
flash. If approximately twenty-four (24) hours worth of 100% run periods occur, and the compartment temperature
does not fall to at least the average of the set point and low off-set temperature (and a drawer is not opened during
the last run period), then the service icon will flash and the alarm will chime.
NOTES:
• If the unit is ever switched OFF then back ON, compressors will not energize for at least three (3) minutes. This
minimum OFF time is used to protect the compressor and its electricals.
• To clear fault indicators and Fault Codes the problem must be corrected, then clear the faults at the service
options screen on the UIM. Failure to clear Fault Codes will result in the highest priority fault indicator reappearing
in the LCD when the unit is switched back ON.
Monitor Compressor Area Ambient Temperature to Control Condenser Fan Speed
All ID units use a variable speed condenser fan motor, and a thermistor in the compressor area monitors the sur-
rounding temperature to vary the speed of the condenser fan motor. At approximately 55°F (13°C) the fan would run
at low speed, at approximately 75°F (24°C) the fan would run at medium speed and at approximately 95°F (35°C) or
greater the fan would run at high speed.
NOTES:
• If there is no signal from the thermistor the fan will default to high speed.
