Basic Electronic Control System - Sub-Zero 700TC-3 Service Manual

Integrated
Integrated

BASIC ELECTRONIC CONTROL SYSTEM

Input operations for the electronic control system are performed at the control panel (located at the top of the upper
compartment), 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 illuminated in the control panel at
the LCD. This page illustrates a basic 700 Series electronic control system (Model 700TCI-3 used, See Figure 3-1).
The entire electronic control system is described in greater detail on the following pages.
ALARM BELL
COND
FAN
FILL TUBE
HEATER
3
3
(700- T
(700- T
CONTROL BOARD
LCD
R R R R
R R R R
FRE EVAP
THERMISTOR
FRE CMPRTMNT
THERMISTOR
DEFROST
HEATER
FREEZER
COMP
Figure 3-1. Basic 700TCI-3 Electronic Control System Diagram
Series
Series
ALL)
ALL)
115 VOLTS
L1
60 CYCLES
MICROPROCESSOR
CONTROL PANEL / MEMBRANE SWITCH
FREEZER COLDER
BOARD CONFIGURING
RESISTORS
REFRIG
COMP
FREEZER
EVAP FAN
3-3
Electronic Control System
NEUT
ICE
WARMER COLDER WARMER REFRIGERATOR
ON/OFF
ON/OFF
LIGHT
SWITCH
DOOR AJAR
MONITOR LINE
WATER
SOLENOID
SOL. MONITOR LINE
ICEMAKER
DEFROST TERMINATOR
REFRIG
EVAP FAN
#3758412 - Revision B - December, 2006
UNIT
ON/OFF
LIGHTS