Basic Electronic Control Input Operations; Unit On/Off; Adjusting Set-Point (Temp. Adjustment) - Sub-Zero 601R-2 Technical & Service Manual

Electronic Control System

BASIC ELECTRONIC CONTROL INPUT OPERATIONS

The following pages describe the basic input operations performed at the control panel. The subjects covered are:
switching unit ON and OFF; adjusting set-point (temperature adjustment); switching ice maker system ON and OFF;
enabling and disabling door ajar alarm feature, and in models 601RG-2, 611G-2 and 650G-2 only, accent lighting
system ON and OFF. Please note that though possible to display temperatures in Fahrenheit or Celsius, in most
cases Fahrenheit readings are shown.

Unit ON/OFF

All units are shipped in OFF Mode. When power is supplied to the unit, a trace of the word "OFF" is visible on the
LCD. By pressing and releasing the UNIT ON/OFF key (See Figure 3-5), power is allowed past the control board to
the rest of the unit. This is indicated by the unit's lights energizing and LCD at the control panel illuminating with
temperature readings.
NOTE: Whenever the unit is switched OFF using the UNIT ON/OFF key, a trace of the word "OFF" will be visible on
the LCD as long as there is power to the unit.
WHEN IN "OFF" MODE, 115 VOLTS AC IS STILL PRESENT AT CONTROL BOARD!
Adjusting Set-Point (Temperature Adjustment)
To adjust set-points, press WARMER or COLDER key on control panel in multiple key strokes until desired set-point
is achieved (See Figure 3-6). One key stroke equals one degree change.
NOTE: The temperature range in a freezer compartment is -5°F (-21°C) to +5°F (-15°C). The temperature range in
a refrigerator compartment is +34°F (+1°C) to +45°F (+7°C).
NOTE: The initial stroke of the WARMER or COLDER key will change the previous set-point by one degree.
NOTE: The set-point will be displayed on the LCD for 10 seconds after the last key stroke. After the 10 second
delay, the compartment temperature will be displayed. As the compartment temperature changes, the temperature
displayed on the LCD will change by no more than one degree per minute.
Figure 3-6. Adjusting Set-Point - Press WARMER or COLDER Key In Multiple Key Strokes
#3758407 - Revision B - August, 2006
Figure 3-5. Switching Unit ON or OFF - Press UNIT ON/OFF Key
Built-In
Built-In
(600-
(600-
FREEZER
COLDER WARMER COLDER
FREEZER COLDER WARMER COLDER
3-6
Series
Series
2
2
)
)
ICE
REFRIGERATOR
WARMER
ON/OFF
ICE
WARMER REFRIGERATOR
ON/OFF
UNIT
ON/OFF
ON/OFF
UNIT
ON/OFF
ON/OFF