> For the complete documentation index, see [llms.txt](https://docs.kegland.com.au/products/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.kegland.com.au/products/cooling-equipment/icemaster-g80-glycol-with-digital-control-or-user-guide/operation.md).

# Operation

KL28165 Icemaster G80 Glycol with Digital Control | Operation

### Digital Temperature Controller Operation

#### Product Overview & Specifications

The controller utilizes advanced, waterproof capacitive touch keys. It regulates cooling or heating systems through a single 10A output relay. Heating is not enabled in the Icemaster G80 Glycol with Digital Control.

* **Measurement Range:** -40°C to 99°C
* **Control Range:** -40°C to 85°C
* **Power Supply:** 220VAC ±10%, 50/60Hz
* **Power Consumption:** ≤ 5W
* **Output Capacity:** 10A / 220VAC (Refrigeration or Heating)
* **Sensor Input:** 1x NTC Sensor (10KΩ/25°C, 2-metre cable)

### Panel Display and Operation

<figure><img src="https://66344119-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FJhj88FK6X4FnrYkWzTvI%2Fuploads%2FR0JoVWUjVih9WDsNvdfI%2FG80%20Controller.jpg?alt=media&amp;token=8316f156-b271-4cab-9140-953f7dca20bb" alt=""><figcaption></figcaption></figure>

#### Interface & Key Functions

The front panel features a 3-digit temperature display and 6 capacitive touch indicators.

#### Indicator Status

* **Key Lock LED:** Illuminated when the touch panel buttons are locked.
* **Refrigeration LED:** Flashes during delay or illuminates when cooling is active.
* **Defrost LED:** Flashes during delay or illuminates when defrost cycle is active.

#### Primary Key Actions

{% columns %}
{% column %}

* **Startup Temperature:** Set the temperature that cooling will begin
* **Defrost key:** Forced Defrost cycle (generally not required if correct glycol percentage is maintained)
* **Shutdown Temperature:** Set the temperature that cooling will end
  {% endcolumn %}

{% column %}

* **Up key**
* **Lock/Unlock key:** The interface locks automatically after 30 seconds of inactivity. Press and hold the **Lock/Unlock key** for 1 second to unlock the keypad
* **Down key**
  {% endcolumn %}
  {% endcolumns %}

### Setting the Desired Temperature

The control logic relies on two crucial baseline limits: **Startup Temperature** (the threshold where the system activates) and **Shutdown Temperature** (the threshold where the target temperature is hit and the system rests).

1. Unlock the panel - hold the **Unlock Key** for 1 second to unlock the controller when locked.
2. Press **"Startup Temperature"**. Use the **Up** or **Down** keys to change the startup temperature limit.
3. Press **"Shutdown Temperature"**. Use the **Up** or **Down** keys to change the shutdown temperature limit.
4. Wait 5 seconds; the controller saves settings automatically and exits to the main screen.

**Example**: To maintain a reservoir temperature of -5°C, set the **Startup Temperature** to -3°C and set the **Shutdown Temperature** to -5°C. This will maintain a temperature of -5°C with a 2°C hysteresis.