---
title: Lower the temperature on a SCS 500/600 Controller
description: You can lower the temperature in a cooler with an installed SCS 500/600 Controller manually or by using Field app.
---
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October 6, 2026
# Lower the temperature on a SCS 500/600 Controller
## You can lower the temperature in a cooler with an installed SCS 500/600 Controller manually or by using Field app.
- [Change the temperature using the buttons on the front panel](https://support.aofrio.com/lower-the-temperature-on-a-scs-500/600-controller#buttons)
- [Change the setpoint temperature using Field app](https://support.aofrio.com/lower-the-temperature-on-a-scs-500/600-controller#setpoint)
### Change the temperature using the buttons on the front panel
1. Make sure the controller is powered on and showing the current temperature.
2. To display the current setpoint value ready for adjustment, press the 'Down arrow' for about 3 seconds until the display shows the current setpoint temperature (e.g., 3.5°C).
3. Press the 'Up' or 'Down' arrows for 1 second to change the setpoint value.
- Setpoint range: -10.0°C to 15.0°C (14°F to 59°F)
- Default: 3.5°C (38.3°F)
- Increment: 0.1°C (0.18°F) per button press
4. Once you are ready to confirm the new setpoint, press the 'Down arrow' for 3 seconds. The display will briefly flash to confirm the change has registered, then it will return to showing the current cabinet temperature after 5 seconds.
5. Leave the cooler for a few minutes and check that the temperature has started to change to the value you have set. Alternatively - you can press the 'Down button' for about 3 seconds to confirm the new Setpoint Temperature is showing. If you don't press another button after this - the display will return to the current temperature after about 5 seconds.
---
### Change the setpoint temperature using Field app
See [when to adjust temperature setpoints](https://support.aofrio.com/when-to-adjust-temperature-setpoints?hsLang=en) for guidance about this action.
1. Connect to the SCS Controller with Field app and open the main menu.
2. Tap **EDIT PARAMETERS**.
3. Select '**Normal Mode**' from the dropdown list.
4. Scroll down and tap '**Operational set point**' then tap the value to enter the new temperature. The default is usually 3.5°C, and the range is -10.0°C to 15.0°C.
5. Tap **ENTER** to apply the change to the controller.
Tip: If you want to optimize energy use, you can also [configure Standby Modes for overnight or inactivity periods](https://support.aofrio.com/reduce-energy-use-with-scs-controller-standby-modes-for-temperature-control?hsLang=en), which allow the cooler to intelligently manage temperature and reduce power consumption.
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