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USER GUIDE
SAFETY • INSTALLATION & INTEGRATION • OPERATING INSTRUCTIONS • MAINTENANCE • SERVICE
Problem
Possible Cause and Remedy
Digital Display
Ensure the unit is not in "Showroom Mode."
Functions, But
Momentarily unplug or interrupt power
Unit Does Not
supply to the unit.
Cool.
Digital Display
"Door" indicates the door may be opened
Shows an Error.
too long. Ensure the door is closing
properly. For other error codes contact
U-Line Customer Service.
Product Is
Because product in contact with the rear wall
Freezing.
may freeze, ensure no product is touching
the rear wall.
Adjust the temperature to a warmer set
point.
Product Is Not
Air temperature does not indicate product
Cold Enough.
temperature.
Adjust the temperature to a cooler set point.
Ensure unit is not located in excessive
ambient temperatures or in direct sunlight.
Ensure the door is closing and sealing
properly.
Ensure nothing is blocking the front grille,
found at the bottom of the unit.
Ensure the condenser coil is clean and free
of any dirt or lint build-up.
ERROR NOTIFICATION
The 3000 model series continuously monitors a series of
inputs and parameters to ensure proper and efficient
operation of your unit. Should the system detect a fault, an
error notification will be displayed on the user interface.
See below for a list of errors.
NOTE: Single zone models will not use (L) left or (R) right
zone indicators in error notification.
ID
Description
No Comm
Unit lost
communication to
the display.
(L) (R) Zone T
Left or right zone
Open
thermistor circuit
open.
Amb Thrm Open Ambient thermistor
circuit open.
(L) (R) Zone T
Left or right zone
Short
thermistor circuit
shorted.
Amb Thrm Short Ambient thermistor
circuit shorted.
Solution
Disconnect and
reconnect power to
unit. Contact Customer
Care if persistent.
Contact Customer
Care.
Contact Customer
Care.
Contact Customer
Care.
Contact Customer
Care.
ID
Description
(L) (R) Temp Hi
Left or right zone
6H+
temperature +10°
over set point for
over 6 hours.
(L) (R) Temp Hi
Left or right zone
12H+
temperature +10°
over set point for
over 12 hours.
(L) (R) Temp Lo
Left or right zone
6H+
temperature -10°
under set point for
over 6 hours.
(L) (R) Temp Lo
Left or right zone
12H+
temperature -10°
under set point for
over 12 hours.
(L) (R) Door
Left or right door
Open 5M
switch open for
more then 5
minutes.
CHECKING PRODUCT TEMPERATURE
To check the actual product temperature in the
unit:
1. Partially fill a plastic (nonbreakable) bottle with water.
2. Insert an accurate thermometer.
3. Tighten the bottle cap securely.
4. Place the bottle in the desired area for 24 hours.
5. Avoid opening the unit during the testing period.
u-line.com
Solution
Verify door is closed
and sealing. Contact
Customer Care if
persistent.
Verify door is closed
and sealing. Contact
Customer Care if
persistent.
Verify door is closed
and sealing. Contact
Customer Care if
persistent.
Verify door is closed
and sealing. Contact
Customer Care if
persistent.
Verify door is closed
and sealing. Contact
Customer Care if
persistent.
Troubleshooting 2
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