Function Of The Wine Storage Electronic Control System; Supply Power To The Lighting System - Sub-Zero 424HAG/O-2 Service Manual

Wine Storage
Wine Storage

FUNCTION OF THE WINE STORAGE ELECTRONIC CONTROL SYSTEM

The following pages explain monitoring, regulating and controlling functions of the electronic control system. In most
cases signal traces for the 424-2 wiring schematic are used to show current flow for functions being explained.
TO AVOID ELECTRIC SHOCK, POWER TO THE UNIT MUST BE DISCONNECTED WHENEVER ACCESSING
AND/OR REMOVING COMPONENTS POWERED BY ELECTRICITY OR COMPONENTS NEAR OTHER ELEC-
TRICAL COMPONENTS.
EVEN WHEN UNIT IS SWITCHED OFF, AC POWER IS STILL PRESENT AT THE CONTROL BOARD.

Supply Power to the Lighting System

When the unit is plugged in, a continuous 115 Volts AC is supplied to the lighting system, making it possible to ener-
gize the lights 100% of the time, even if the door is closed. (See Lighting System ON/OFF). The lighting system
can also be disabled for observance of certain religious days, (See Sabbath Mode). The illustration below shows
normal operation, with 115 Volts AC supplied to the unit. (See Figure 3-15)
ELECTRIC SHOCK HAZARD. 115 VOLTS AC IS STILL PRESENT AT THE CONTROL BOARD AND LIGHT
SWITCH WHEN LIGHTS ARE DISABLED.
J1
J8
WINE
CONTROL
BOARD
BLACK
(400-
(400-
L1 NEUT
115 VOLTS
60 CYCLES
1
J2
8
1
2
BLUE
J3
PINK
14
E2
E1
E3
GRAY
Figure 3-15. Lighting System Signal Trace (Normal Operation)
Series
Series
2
2
)
)
WHITE
ORANGE
N.C.
BROWN
ORANGE
PINK PINK
N.O.
BLUE BLUE
N.O.
TAN
NOTE: If display lighting is activated, power is sup-
plied to lights, bypassing light switch
OVERLOAD PROTECTOR
WHITE
3-9
Electronic Control System
LIGHTS
LIGHTS
UPPER
M
EVAPORATOR FAN MOTORS
LOWER
M
AWECO REF VALVE
680 Ω
CONDENSER FAN MOTOR
M
COMPRESSOR
STARTING RELAY
M
COMPRESSOR
#3758410 - Revision C - May, 2014