34 of 40
Operating Manual:
SU780XLE
SU780XLE-LIT-OM-I |
11.18.19
8. Troubleshooting
Problem
Possible Cause
Solution
Freezer does not
power on
Power is not getting to the
freezer from the Power Supply
Check the connections
of the AC cord
Assure that the wall plug
is firmly seated
Freezer does
not achieve or
maintain desired
setpoint
Inadequate air circulation
Remove airflow obstructions
from external fan inlet and
outlet vents
Inadequate power
Assure that the wall plug
is firmly seated
Improper environment
Remove freezer from direct
sunlight, hot room, etc.
Check that freezer is level.
Tilts of more than 5 degrees
in some directions will
degrade performance.
Freezer recovers/
returns to set
point slowly
Door is not completely closed
Check for ice buildup,
remove if necessary, and
properly close door
Door is open and closed
too often
Minimize opening
and closing of door
Inadequate air circulation
Unblock air vents
Note
This freezer is designed for storage of frozen product.
For best results:
•
Operate your freezer at full capacity with real or simulated product to increase
the thermal mass, displace air and maintain optimal stability
•
Minimize the frequency and duration of door openings