3-2
S
TARTUP
/ O
PERATION
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
