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RELAYS
The control system controls up to three relays which then control the refrigeration and heating systems:
RELAY1— Controls the compressor and the condenser fan (refrigeration system).
RELAY2— Controls the evaporator fan (refrigeration system).
RELAY3 OPTION— Controls the optional upper zone blower and heater system.
DOOR SWITCH
The door switch is located in the upper right corner of the vendor door assembly (See Figure 20). The door switch is monitored by
the control system for evaluating when to run the refrigeration and evaporator systems as well as when to reset optional health
safety.
If the vendor is plugged in and the power switch is on and the door is open,
then the compressor, evaporator fan, heater and heater fan are all turned off. A
30 minute door timer starts and a compressor delay timer starts.
If the door is open for more than 30 minutes, the controller will resume
closed door operation, the message DOOR A
code is set.
If the door is closed, then evaporator fan is turned on. When the
compressor delay timer expires, then the controller evaluates the zone
sensor readings, relay states and timers.
FACTORY DEFAULT SETTINGS
NOTE:
Please read and follow the step-by-step instructions in the Control System Programming Manual to change the factory
default settings.
S T / V T V E N D O R • 3 5 6 8 3 5 6 7 3 5 6 6 3 5 6 5 •
PROGRAM MODE
DEGREE
TEMPERTURE
MODE
PRICE • ITEM(S)
SET POINT
DELTA
DEFROST
DURATION
DEFROST PERIOD
(Comp Continuous
SENSOR1
Run Time)
DEFROST DELAY
(timer)
HEALTH SAFETY
RANGE
(health/safety)
SET POINT
SENSOR2
OPTION
DELTA
is displayed and error
LERT
PROGRAM
VERSION
ENGLISH
°F (Fahrenheit)
COLD
OFF
All selections
set to .75
36°F (2C)
7°F
15 MIN
2 HRS
8 HRS
COLD
All
63°F
5°F
20
FIG 20 . : Door Switch Location
PROGRAM VERSION
SPANISH
°C (Celsius)
COLD
OFF
All selections
set to 50.00
39°F (4 C)
7°F (4 C)
15 MIN
2 HRS
8 HRS
COLD
All
63°F (16 C)
5°F (3 C)
Door Switch
4 2 2 0 5 5 7 R E V A
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