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b) For Freezers
This unit is preset at the factory to defrost 6 times per day for general conditions. Note
that the defrost is a heated defrost, and therefore will have a tendency to raise the
cabinet temperature. Cabinet temperature is not displayed during defrost; "dEF" is
displayed in its place. When a sensor in the evaporator coil reaches the termination
setpoint, the unit ends defrost. After defrost, there is a 5 minute delay before the
compressor will start.
Before changing the defrost frequency setting, contact the Hoshizaki Technical Support
Department at 1-800-233-1940 for recommendations. If necessary, adjust the 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 1 and 8
defrosts per 24 hours. The factory default is 6.
3) To save the value, press "ENTER" repeatedly until you have cycled through the menu
and the unit returns to the normal display mode. If you do not cycle through the menu
and no button is pressed in 15 seconds, the display will return to normal and the
defrost frequency will remain unchanged.
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 defrost will take effect "x"
hours after power is resupplied. For example, if set df 6, x=4, the next defrost will
take place 4 hours from the time that power is applied.
2. SafeTemp Models
a) For Refrigerators
This unit uses an off-cycle defrost. A sensor in the evaporator coil determines the need
for a defrost. When the sensor reaches the initiation setpoint, the unit enters defrost.
When the unit reaches the termination setpoint, the unit ends defrost. After defrost, there
is a 5 minute delay before the compressor will start. The off-cycle defrost requires no
programming; it automatically initiates and terminates.
b) For Freezers
This unit is preset at the factory to defrost 6 times per day for general conditions. Note
that the defrost is a heated defrost, and therefore will have a tendency to raise the
cabinet temperature. Cabinet temperature is not displayed during defrost; "dEF" is
displayed in its place. When a sensor in the evaporator coil reaches the termination
setpoint, the unit ends defrost. After defrost, there is a 5 minute delay before the
compressor will start. When the compressor starts, the display changes to "rEC". Once
the cabinet thermistor drops to 15°F above the setpoint, the display reverts back to
cabinet temperature.
