SAFETY • INSTALLATION & INTEGRATION • OPERATING INSTRUCTIONS • MAINTENANCE •
SERVICE
Control Operation - Service 2
USER GUIDE
u-line.com
SERVICE MENU
In addition to a feature rich customer menu, the 3000
series also offers a service menu with the ability to
fine tune and monitor unit operation.
To initiate the Service menu hold both and for 5
seconds.
Actual Temps
The Actual Temp option in the service menu will
display raw thermistor readings without calculating
offsets.
1.
Press
to select “Actual
Temps”.
2.
Press
3.
Use to scroll through available thermistor
readings.
To exit the Actual Temps menu press to select
“Return to Menu” and press
to confirm.
All Errors
The All Errors option keeps record of any system
errors. When an error occurs it is recorded to all errors.
The number next to the error indicates the number of
recorded instances. Errors in the log may not be
currently active. The error log memory is non volatile
and is persistent should power be lost and restored to
the unit. See below for a list of logged errors and their
respective descriptions.
ID
Descr
ipt
ion
So
lut
ion
No Comm
Unit lost communication to
the display
Check connection to Display board and
Main board. Check integrity of wires. If
unit not operational, replace wire, if
functioning properly, then software re-
set and no adjustments are needed.
L Zone T Open
Left Zone thermistor circuit
open
Check thermistor connection to harness
for moisture or corrosion. Also check
connection where thermistor harness
attaches to main board. If connections
are valid replace the thermistor.
NOTE: DWR/ZWC models, L indicates
TOP zone, R indicates BOTTOM zone.
R Zone T Open
Right Zone thermistor circuit
open
L Evap T Open
Left Evaporator thermistor
circuit open
R Evap T Open
Right Evaporator thermistor
circuit open
Amb Thrm Open
Ambient thermistor circuit
open
L Zone T Short
Left Zone thermistor circuit
short
R Zone T Short
Right Zone thermistor circuit
short
L Evap T Short
Left Evaporator thermistor
circuit short
R Evap T Short
Right Evaporator thermistor
circuit short
Amb Thrm Short
Ambient thermistor circuit
short
L Temp Hi 6H+
Left Zone tempe10°F
(+5°C) over set point for over
6 hours
Is condenser coil clean? Is condenser fan
operating? Check zone thermistor for
correct resistance. Verify thermistor
connections are clean and intact. Check
zone valve operation. Sealed system
issue?
NOTE: DWR/ZWC models, L indicates
TOP zone, R indicates BOTTOM zone.
R Temp Hi 6H+
R Zone tempe10°F
(+5°C) over set point for
over 6 hours
L Temp Hi 12H+
Left Zone tempe10°F
(+5°C) over set point for
over
12 hours
R Temp Hi 12H+
R Zone tempe10°F
(+5°C) over set point for
over
12 hours
L Temp Lo 6H+
Left Zone temperature -10°F
(-5°C) over set point for over
6 hours
Verify thermistor connections are clean
and dry. Verify thermistor resistance.
Verify correct operation of zone valve.
NOTE: DWR/ZWC models, L indicates
TOP zone, R indicates BOTTOM zone.
R Temp Lo 6H+
R Zone temperature -10°F
(-5°C) over set point for over
6 hours
L Temp Lo 12H+
Left Zone temperature -10°F
(-5°C) over set point for over
12 hours
R Temp Lo 12H+
R Zone temperature -10°F
(-5°C) over set point for over
12 hours
L Door Open 5M
Left door switch open for
more than 5 minutes.
Check door switch magnet reed switch
alignment when door is in closed
position.
Check reed switch connection at the
harness and the main board.
NOTE: DWR models, L indicates TOP
drawer, R indicates BOTTOM drawer.
NOTE: ZWC models indicate L Door for
the only door present.
R Door Open 5M
Right door switch open for
more than 5 minutes.
To access All Errors follow the steps below.
Up
Select
Down
RETURN TO MENU
ACTUAL TEMPS
ZONE = 2°C
EVAP = °C
Up
Error ID
Number
Of Occurrences
Select
Down
RETURN TO MENU
ALL ERRORS
NO COMM 0
ZONE T OPEN 0
.
and
Summary of Contents for 3024DWR
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