Hoshizaki 73168 Refrigerator User Manual


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19
Section Temperature Setpoint Range Default
Cabinet
21 to 53°F
(-6 to +12°C)
37°F
(3°C)
Rail
-13 to +53°F
(-25 to +12°C)
33°F
(1°C)
c) Temperature Setpoint
The temperature setpoint is the temperature setting at which the compressor turns on.
The factory default temperature setpoints are 37° (3°C) for the cabinet and 33°F (1°C)
for the rail (see the chart below).
The temperature differential for the compressor to turn off is 3.6°F (2°C) below the
temperature setpoint. The temperatures are updated every 30 seconds. If necessary,
adjust the temperature setpoint as outlined below.
Note: The cabinet and rail temperature setpoints must be changed individually.
1)Presstheappropriate"SET"buttontodisplaythecurrenttemperaturesetpoint.
2)Pressandholdtheappropriate"SET"buttonwhilepressingtheupordownarrow
button. See the chart below for temperature setpoint ranges.
3)Releasethe"SET"button.Aslongastheunitisnotturnedoff,thenewsetpointwillbe
saved automatically after 10 seconds.
d) Cabinet Defrost
Theautomaticcabinetdefrostisfactorysetforonceevery6hours.See"II.D.5.Service
Menu."Thecabinetdefrostthermistorwillsignalthecontrolboardtostartadefrostonce
the 6 hour defrost timer has expired and the cabinet evaporator temperature is below
49°F (9.4°C). Defrost is heated, and therefore will have a tendency to raise the cabinet
temperature.
Foramanualcabinetdefrostpressthe"MANUALDEFROST"buttononthecontrol
board for 5 seconds to initiate a defrost. This will restart the 6-hour defrost timer.
Cabinettemperatureisnotdisplayedduringdefrost;"dF"isdisplayedinitsplace.The
control board will terminate the cabinet defrost and begin defrost recovery when a signal
from the cabinet defrost thermistor is greater than 49°F (9.4°C). After defrost, there is a
5-minute delay before the compressor will start.
This unit has an additional defrost thermistor located behind the wire cover that connects
to the K201 connector, terminals 3 and 4. This thermistor is not used for defrost
purposes on this model, but must be in place for proper operation of the control board.
e) Energy Saving Mode
"EnergySavingMode"isnotusedonthisunit.The"EnergySavingMode"LEDis
locatedtothebottomrightofthecabinetdisplayandshouldbeoff.See"II.D.2.Control
BoardLayout."Ifthe"EnergySavingMode"LEDison,pressthe"SERVICEUSE
ONLY"buttonfor5secondstoexitanddisablethe"EnergySavingMode."
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