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EN
©2021 Hestan Commercial Corporation
8
DIGITAL TEMPERATURE CONTROL
(continued)
Setpoint Display:
Press and release the SET button; display will read St1. Press SET again and the LOWER
compartment setpoint will be displayed.
Press SET again; the display will read St2. Press SET again and the UPPER compartment temperature
will be displayed.
Changing the Lower Compartment Temperature:
1. Press and hold the SET button until the display shows St1 with “F” flashing.
2. Press SET again to display the lower compartment’s current temperature (“F” will continue to
flash).
3. Use the UP or DOWN arrow key to scroll to the desired temperature. The controller will
memorize the new emperature.
Changing the Upper Compartment Temperature:
1. Press and hold the SET button until the display shows St1 with “F” flashing. Press the DOWN
arrow once; the display will read St2.
2. Press SET again to display the upper compartment’s current temperature (”F” will continue to
flash).
3. Use the UP or DOWN arrow key to scroll to the desired temperature. The controller will
memorize the new temperature.
NOTE: Dependent on the model and configuration, the controllers have been programmed to only
allow a lower compartment temperature adjustment range as specified within the chart below. The
upper compartment range is not limited, but should always be kept within the specified range shown
in the table for the upper compartment. See the chart below for the specified range allowed for your
unit.
Dual-Zone Units
MODEL TEMPERATURE RANGE
GRFR24 Upper 30°to 42°F [-1 to +6°C] / Lower -10°to 10°F [-23 to -12°C]
GRWS_24 / GRWG_24 Upper 45°to 65°F [+7 to +18°C] / Lower 30°to 42°F [-1 to +6°C]
Dual-Zone Temperature Scale
To change F to C, press and hold the down arrow for 3 seconds.
To Start A Manual Defrost (GRFR24 Only)
Press and hold the DEFROST button (melting snowflake) for 3-5 seconds. Melting snowflake will
illuminate.
SINGLESINGLE ZONE CONTROL INSTRUCTIONS ZONE CONTROL INSTRUCTIONS
ON / OFF
Press the ON/OFF button to turn the unit on or off.
To Set Target Temperature
Press and release the SET button. Display will show the current temperature setpoint.
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