User Guide & Service Manual
USER GUIDE
 Control Operation - Service 3
u-line.com
SAFETY • INSTALLATION & INTEGRATION • OPERATING INSTRUCTIONS • MAINTENANCE • SERVICE
SERVICE MODE GUIDE
1. THERMISTOR 1
 — ZONE (REFRIGERATOR)
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. THERMISTOR 3
 — ZONE (FREEZER)
This shows the pure thermistor reading with no 
offsets taken into account.
4. THERMISTOR 4
 — ICEMAKER
This shows the pure thermistor reading with no 
offsets taken into account. 
5. THERMISTOR 1 — ZONE OFFSET
(DO NOT MAKE AN ADJUSTMENT TO THIS WITHOUT 
CONTACTING TECH LINE: 800-779-2547)
  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: 800-779-2547)
7. THERMISTOR 3 — FREEZER OFFSET
 Not adjustable.
8. THERMISTOR 4 — ICEMAKER OFFSET
 Not adjustable. 
9. THERMISTOR 2 — SET POINT MINUS 
OFFSET
This shows the thermistor reading with offsets 
taken into account.
10. THERMISTOR 3 — SET POINT MINUS 
OFFSET
This shows the thermistor reading with offsets 
taken into account.
11. THERMISTOR 4 — SET POINT MINUS  
OFFSET
This shows the thermistor reading with offsets 
taken into account.
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.
 # 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
0Exit 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
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