USER GUIDE
Control Operation-Service
USER GUIDE
Control Operation - Service 3
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SAFETY • INSTALLATION & INTEGRATION • OPERATING INSTRUCTIONS • MAINTENANCE •
SERVICE
SERVICE MODE GUIDE
1. THERMISTOR 1 — ZONE
This shows the pure thermistor reading with no
offsets taken into account.
2. THERMISTOR 2 — EVAPORATOR
This shows the pure thermistor reading with no
offsets taken into account.
3.
Does not apply to this model.
4.
Does not apply to this model.
5. THERMISTOR 1 — ZONE OFFSET
(DO NOT MAKE AN ADJUSTMENT TO THIS WITHOUT
CONTACTING TECH LINE:
+1.414.354.0300
)
This calibration is only to be used if actual
temperature at thermistor #1 is off from set
point.
By adjusting the offset higher we can force the
unit to drive the temperature down below the set
point. (example: adjusting from 0 to +2 will drop
the unit temperature 2 degrees)
6. THERMISTOR 2 — EVAPORATOR OFFSET
(DO NOT MAKE AN ADJUSTMENT TO THIS WITHOUT
CONTACTING TECH LINE:
+1.414.354.0300
)
7. THERMISTOR 3 — AMBIENT OFFSET
Not
adjustable.
8.
Does not apply to this model.
9. THERMISTOR 2 — SET POINT MINUS
OFFSET
This shows the thermistor reading with offsets
taken into account.
10.
Does not apply to this model.
11.
Does not apply to this model.
12.ADJUST DEFROST INTERVAL — 3 TO 24
HOURS
This will adjust the interval between defrosts
from 3 to 24 hours. Adjusting from the factory
settings may cause undesired temperature in
the refrigerator section.
13.ADJUST DEFROST DURATION — 0 TO 99
MINUTES
The length of the defrost can be adjusted 0 to 99
minutes long. The other defrost parameters still
apply. Lengthening a defrost may cause higher
than normal temperatures in the refrigerator
section.
#
Service Mode Menu Item
1
View thermistor #1 (no offsets)
2
View thermistor #2 (no offsets)
3
View thermistor #3 (no offsets)
4
View thermistor #4 (no offsets)
5
Adjust thermistor #1 offset
6
Adjust thermistor #2 offset
7
Adjust thermistor #3 offset
8
Adjust thermistor #4 offset
9
View thermistor #2 set point no offsets
10
View thermistor #3 set point no offsets
11
View thermistor #4 set point no offsets
12
Adjust defrost interval 3 to 24 hours
13
Adjust defrost duration 0 to 99 minutes
14
View error log
15
Clear error log
16
Adjust thermistor #1 differential
17
Adjust evaporator fan delay in minutes (start of cooling
cycle) 0 - 99 minutes
18
Adjust evaporator fan delay in minutes (after cooling
cycle stops) 0 - 99 minutes
19
Individual component toggle
20
Model number indicator
21
Light all LED segments of display
22
View defrost cycles
23
View compressor run time
24
Activate defrost/harvest
25
Restore factory defaults
26
View software version - main board
27
View software version - user interface
28
Login period
29
Factory test mode
0
Exit service mode
NAVIGATE SERVICE MODE
Use up or down arrows to scroll through the menu.
Use the light bulb key to enter or exit menu. If values
have been changed, they will be saved when exiting.
SERVICE MODE GUIDE
USER GUIDE
Control Operation - Service 4
u-line.com
SAFETY • INSTALLATION & INTEGRATION • OPERATING INSTRUCTIONS • MAINTENANCE •
SERVICE
14. VIEW ERROR LOG
A list of the errors in the order they occurred will
scroll once on the display. All errors are logged
in memory. Only door error is displayed on the
display and has an audible signal.
E0:
Door 1 (upper) open.
E1:
Thermistor 1 open.
E2:
Thermistor 2 open.
E3:
Thermistor 3 open.
E4:
Thermistor 4 open (Does not apply to this
model).
E5:
Thermistor 1 shorted.
E6:
Thermistor 2 shorted.
E7:
Thermistor 3 shorted.
E8:
Thermistor 4 shorted (Does not apply to this
model).
E9:
Door 2 (lower) open.
P1:
Pump Circuit open (Does not apply to this
model).
15. CLEAR ERROR LOG
To clear errors, press and hold
(5 seconds)
when CLR is flashing.
16. THERMISTOR — 1 DIFFERENTIAL
This number should not be adjusted.
17. EVAPORATOR FAN DELAY IN MINUTES —
ON
“Fan Delay On” is the amount of time in minutes
the fan will be delayed from starting from the
beginning of a cooling cycle. Adjustable 0-99
minutes.
18. EVAPORATOR FAN DELAY IN MINUTES —
OFF
“Fan Delay Off” is the amount of time in minutes
the fan will continue to run at the end of a
cooling cycle. Adjustable 0-99 minutes.
19. INDIVIDUAL COMPONENT TOGGLE
20. MODEL NUMBER INDICATOR
Displays the two-digit model number of the
specific unit. See model list table.
21. LIGHT ALL LED SEGMENTS
This will illuminate all the LEDs on the display to
ensure they work properly.
22. VIEW DEFROST CYCLES
Displays the number of defrosts that have
occurred in the past 24 hours.
23. VIEW COMPRESSOR RUNTIME
This will show the number of minutes the
compressor has run in the prior cycle (or
current cycle if the compressor was running
when service mode was entered).
24. ACTIVATE DEFROST/HARVEST
Turns on the hot gas bypass valve allowing hot
gas to circulate through the evaporator causing
frost to melt.
25. RESTORE FACTORY DEFAULTS
Will restore all adjustable functions to their
factory settings.
26. SOFTWARE VERSION — MAIN BOARD
Displays software version of the main control
board.
27. SOFTWARE VERSION —
USER INTERFACE
Displays software version of the user interface.
28. LOG IN PERIOD
Factory use only - do not adjust.
29. FACTORY TEST MODE
Should be 0.
0. EXIT SERVICE MODE
Display #
Relay/Output
0
Exit
2
Relay 2
3
Relay 3
4
Relay 4
5
Relay 5
6
Relay 6
7
Relay 7
8
DC Output 1
9
DC Output 2
10
DC Output 3
11
DC Output 4
12
DC Output 5
SEE RELAY/OUTPUT CHART
40
