Control Board - Sub-Zero 601R-2 Technical & Service Manual

Built-In
Built-In
BASIC 600-2 SERIES ELECTRONIC CONTROL SYSTEM
This page contains a basic illustration of the 600-2 Series electronic control system (See Figure 3-1). Input opera-
tions for the electronic control system are performed at the membrane switch (part of the the control panel assem-
bly), with monitoring, regulating and controlling functions taking place at the control board (located directly behind
the control panel). Temperatures and possible problems with the unit are displayed at the control panel on the LCD.
The entire electronic control system is described in greater detail on the following pages.
NOTE: The diagram below is not an exact electrical representation of the electronic control system. For more detailed
electrical diagrams refer to the wiring diagram and schematic supplied with the unit.
FREEZER
COMP
DOOR AJAR
ALARM BELL
R
R R R R
Figure 3-1. Basic 600-2 Series Electronic Control System Diagram
2
2
(600- )
(600- )
REFRIG
COMP
FREEZER
EVAP FAN

CONTROL BOARD

LCD
R R
FRE EVAP
THERMISTOR
FRE COMPARTMENT
THERMISTOR
DEFROST
HEATER
Series
Series
CONDENSER
FAN
REFRIG
EVAP FAN
MICROPROCESSOR
MEMBRANE SWITCH
COLDER WARMER
FREEZER FREEZER
BOARD CONFIGURING
RESISTORS
3-3
Electronic Control System
L1
115
VOLTS
60
CYCLES
ICE UNIT
COLDER WARMER
REFRIGERATOR REFRIGERATOR
ON/OFF ON/OFF
ON/OFF
LIGHT
TERMINATOR
SWITCH
DOOR AJAR
MONITOR LINE
WATER
SOLENOID
SOL. MONITOR LINE
ICEMAKER
DEFROST TERMINATOR
#3758407 - Revision B - August, 2006
NEUT
LIGHTS