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USER GUIDE
SAFETY • INSTALLATION & INTEGRATION • OPERATING INSTRUCTIONS • MAINTENANCE • SERVICE
To access Offsets
1. Press
.
2. Press
and
3. Press to scroll through
available thermistors.
To change offsets
4.
thermistor will begin to flash.
or
5.
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 access Self Test
1. Press
to select "Self Test".
2. Press
to select "Offsets".
Press
, the selected
Press to modify offset value.
to select "Return to
Select
RETURN TO MENU
SELF TEST
NO ERRORS
try "RELAY TOGGLE"
3. Press to scroll through available information.
To exit
the Self Test, Press
"Return to Menu" and press
confirm.
.
Differentials
and
Up
RETURN TO MENU
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.
Evap Fan (excludes ZWC)
u-line.com
to select
to
Select
DIFFERENTIALS
ZONE = 1°F
43° (6°)
43° (6°)
41° (5°)
41° (5°)
39° (4°)
37° (3°)
p'Lɞ HUHQWLDO
p'Lɞ HUHQWLDO
p'Lɞ HUHQWLDO
Control Operation - Serv
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