US Cellar Systems

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Wine Cellar Refrigeration Solutions For the Trade Menu

Wine Cellar Cooling Units DC-1 Controller Logic

Digital Controller Pre-Programming


The DC-1 controller supplied with all US Cellars Wine Cellar Cooling equipment is programed to operate with a 5 °F differential in air temperature. Pre-programmed system controls for run time of the equipment help to balance the humidity of the wine cellar.

If the factory controller is replaced, the replacement should have a deferential that can be adjusted from 1 °F to 10 °F.

If the alternate controller does not have this ability, US Cellars cannot assure proper operation of the wine cellar refrigeration system.

Field Wiring

L1115V Line Voltage


SVSolenoid Valve

FMFan Motor

TPTemperature Probe

Fan Coil Wiring

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Condensing Unit Wiring

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Back of Controller Connections

10Temperature Probe

11Temperature Probe


5115V Line Voltage

2Jumper from 5

3Switch Leg to Fan Coil

C NOInternal normally open contact

Paramet Name Parameter Setting Parameter Description
SCL F Temperature scale is in degrees F
SPL 40F Lowest allowable set-point
SPH 70F Highest allowable set-point
SP 55F The control set-point ( turn off )
C-H REF Controller set to operate a refrigeration cycle
HYS 5 The control differential (cut in set-point of 60F, will maintain a 57F target)
CRT 10 Minimum compressor rest time after cycling off
CT1 15 Compressor “ON” time when the temperature sensor fails (in minutes)
CT2 15 Compressor “Off” time when the temperature sensor fails (in minutes)
CSD 0 A compressor stop delay after the door has been opened. (not applicable, set to 0)
DFR 1 Defrost per day
DLI 60 Defrost termination temperature
DTO 30 Defrost duration in minutes
DTY ELE Defrost Type, ELE = Electric Defrost (this my assumption, “GAS” = Hot Gas defrost, and this will force the compressor on)
DDY 10 This features enables the controller to display “REC” for “x” number of minutes after the defrost has expired and the refrigeration has resumed. (I suggest 15 minutes) “DEF” will be displayed during the defrost cycle.
ATM REL Alarm function is active and the high & low alarm set-points are independent temperature values.
ALR -10 Low alarm set-point ( I would suggest -25F)
AHR 10 High alarm set-point (I would suggest -5F)
ATD 120 Alarm delay in minutes (I would suggest 30 minutes)
ADO 0 Alarm delay for a open door (not applicable if a door switch is not used)
ACC 0 This parameter will trigger an alarm after a defined number of weeks has expired for the compressor operation. For example, the ACC parameter is set to “1”, then every 168 hour of compressor operation will trigger this maintance alarm. This a good feature for cases that require condenser coil cleaning. Set this feature to “0” to disable it.
SB YES When this parameter is set to “YES”, the controller operation can be put in stand by mode by holding in the key on the far right of the keypad. In standby mode, all relays cycle off. This works well for maintenance work, but can pose problems if it is mis-used. Setting this parameter to “NO” will disable the feature.
DS NO This feature enables the door switch input. The “NO” setting disables this feature.
OAU NON This parameter defines the function of the “AUX” relay (the second relay on the controller). “DEF” defines the relay as you defrost relay.
INP SN4 This parameter defines the type of temperature sensor used. “SN4” is the sensor type of the standard 10K NTC sensor. This will always be your choice.
OS1 0 The offset for sensor one (“T1”). Should not require adjustment.
T2 NO This parameter enables the “T2” defrost termination sensor.
OS2 0 The offset for sensor one (“T2”). Should not require adjustment.
TLD 5 Your LAE controller is setup to log the historical high & low temperature extremes of your control temperature sensor. This delay parameter (in minutes) requires your high or low temperature reading to last for 5 minutes or longer before it is logged. You can view the “THI” (high temp) and “THO” (low temp) by pressing the “I” button on the controller’s keypad. The “I” button is the “info” button. It is the key located to the far left of the controller’s keypad.
SIM 0 The “SIM” function slows down the the rate of change in the temperature displayed on the controller’s display. A value of “0” does not alter the temperature display, but any number 1 to 100 will slow down and even out the the temperature displayed. The higher the number, the slower the change. This does not slow down the controllers actions, but simply evens out the abrupt temperature spikes that might occur. It is visual trick!
ADR 1 All factory set controllers should have an address of “1” for programming purposes. These controllers can be networked together in the field to create an energy management system. In those instances, the address can be from 1 to 255.


Call +1 (562) 513-3017 & ask for Systems Design

US Cellar’s Wine Cellar Refrigeration Units come in different designs which are appropriate for varying applications such as Wine Cabinets, Commercial Wine Cellars and Wall or Ducted Cooling Systems. To make it easier to understand the use cases each Cooling Unit is designed for, we have organized them into the categories below for your convenience.