3-2 STARTUP / OPERATION
P/N 3141959_C U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com
Perform the following steps:
When the controller display shows the refrigeration symbol, (Blue snowflake) and “dEF” at the same time,
the system is in the pull-down stage after ending the defrost cycle.
This “dEF” lasts until the set point is achieved. Once this happens, the discharge air temperature will
appear in the display. If for some reason the system is not able to achieve the defined set point, the “dEF”
message will last 40 minutes.
Figure B
Figure A
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