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USER GUIDE
SAFETY • INSTALLATION & INTEGRATION • OPERATING INSTRUCTIONS • MAINTENANCE • SERVICE
Offsets are used to adjust or correct thermistor readings.
Offset values are added to the current thermistor reading
and are then used by the control board to determine
cooling and defrost cycle times. Offsets have a range of
+/- 10°F. Corrected values may be viewed through the
customer "All Temps" menu.
To access Offsets
1. Press
to select "Offsets".
2. Press
.
3. Press
and
to scroll through available
thermistors.
To change offsets
4. Press
, the selected thermistor will begin to flash.
5. Press
or
to modify offset value.
6. Press
to confirm setting.
To exit the Offset menu, press
Menu" and press
to confirm.
Self Test
Up
Down
Self test is used to initiate a self diagnostic report. Any
system faults will be displayed under Self test. If no errors
are present "no errors" will be displayed and the main
control board is functioning properly. The main control
board is extremely robust and should rarely require
service. Most issues are external to the control. Reference
troubleshooting for more information.
to select "Return to
Select
RETURN TO MENU
SELF TEST
NO ERRORS
try "RELAY TOGGLE"
To access Self Test
1. Press
to select "Self Test".
2. Press
.
3. Press
and
to scroll through available
information.
To exit the Self Test, Press
and press
to confirm.
Differentials
Up
Can be displayed in Celsius
Down
(DO NOT MAKE AN ADJUSTMENT TO THIS WITHOUT
CONTACTING TECH LINE: 800-779-2955)
Differentials are used to determine the maximum variation
from set point and have a range of 0 through 10. The
table below shows the effect of differentials on cooling
cycles with a set point of 45°F (7°C).
NOTE: Air temperature does not reflect product
temperatures.
Differential
Cycle Start °F (°C) Cycle End °F (°C)
0
45° (7°)
1
46° (8°)
2
47° (8°)
3
48° (9°)
4
49° (10°)
5
50° (10°)
The graph below shows a unit's cooling cycle over time
with various differentials.
57
to select "Return to Menu"
Select
RETURN TO MENU
DIFFERENTIALS
ZONE = 1°F
43° (6°)
43° (6°)
41° (5°)
41° (5°)
39° (4°)
37° (3°)
Control Operation - Service 5
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Troubleshooting
