DIGITAL TEMPERATURE CONTROL
To Change Setpoint Temperature
1. Press and hold the SET button until the display shows the current setpoint temperature with the
"F" flashing.
2. Use the UP and DOWN arrow button to scroll to the desired temperature.
To Start A Manual Defrost (Freezer Models Only)
Press the DEFROST button (melting snowflake)
To See Maximum Stored Temperature
Press the UP arrow button to see the maximum stored temperature.
To reset the maximum stored temperature, while displayed, press and hold the SET button until 'rst'
flashes in the display.
To See Minimum Stored Temperature
Press the DOWN arrow button to see the minimum stored temperature.
To reset the minimum stored temperature, while displayed, press and hold the SET button until 'rst'
flashes in the display.
NOTE: Dependent on the model and configuration, the controllers have been programmed to only
allow a temperature adjustment within the specified range. See the chart below for the specified
range allowed for your unit.
Single-Zone Units
MODEL
MIN. TEMP. SET
GRS_24
33°F [+1°C]
LED Functions
The following table describes the LED functions.
LED
Mode
ON
Flashing
ON
ON
Flashing
NOTICE
Audible alarm will sound if the door is left ajar for longer than 1 minute. Fully
closing the door will clear the alarm condition. Prolonged time spent with the door
open can damage the equipment.
(continued)
MAX. TEMP. SET
42°F [+6°C]
Function
Compressor is on
Anti-short cycle
delay is on
Defrost is on
Alarm is on
You are in the process of
programming the unit
©2021 Hestan Commercial Corporation
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