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b) Temperature Setpoint
The temperature setpoint is the temperature at which the compressor comes on. For
refrigerators, the temperature differential for the compressor to turn off is -5°F. For
freezers, the temperature differential for the compressor to turn off is -6°F. If necessary,
adjust the setpoint temperature as follows:
1) Press "SET." The display reads:
SP1
2) Press "SET." The display reads:
Current Setpoint
3) Use the up/down arrows to change the setpoint. For refrigerators, the cabinet
temperature is adjustable between 37°F and 55°F. The factory default is 39°F. For
freezers, the cabinet temperature is adjustable between -10°F and 28°F. The factory
default is -1°F for 1-section freezers and 0°F for 2-section freezers.
4) Press "SET" to save. If no button is pressed in 15 seconds, the display will return to
normal, and the setpoint will remain unchanged.
c) Changing the Temperature Display Scale (°F or °C)
The cabinet temperature on SafeTemp models can be displayed in °F only.
D. Defrost
1. TempGuard Models
a) For Refrigerators
This unit uses an off-cycle defrost. When a sensor in the evaporator coil reaches the
initiation setpoint, the unit enters defrost. When the sensor reaches the termination
setpoint, the unit ends defrost. After defrost, there is a 5 minute delay before the
compressor will start.
Units with a control board of revision level R23 or later (board revision level can be seen
on display at power up) also feature an adjustable time-initiated defrost along with the
normal temperature-initiated defrost.
The time-initiated defrost is factory set for normal conditions. Before changing this
setting, contact the Hoshizaki Technical Support Department at 1-800-233-1940 for
recommendations. If necessary, adjust the time-initiated defrost frequency as follows:
1) Press and hold the up/down arrows simultaneously for 3 seconds. Press "ENTER" until
the dF frequency is displayed.
2) To change the time-initiated defrost frequency, press the up/down arrows until the
desired value is displayed. The defrost frequency is adjustable between 0 and 12
defrosts per 24 hours. The factory default is 0.
3) Press "ENTER" to set the value and view the next setting. If no change in the value is
desired, press "ENTER" and the unit will return to normal display mode.
Important Note: For the change to take effect, you must cycle through the menu until
you return to the normal display.
Note: The change in the defrost setting will take effect after the next defrost based
on the previous setting. To make this change in interval timing take effect
immediately, turn the unit off and back on. The next time-initiated defrost will take
effect "x" hours after power is resupplied. For example, if the setting is dF 6, x=4
and the next defrost will take place 4 hours from the time that power is supplied.
