This will vary from model to model so please refer to your manual. The three coloured indicator lights located inside the appliance show the operating mode of the freezer. Amber Indicator is lit when the thermostat is set to max and stays on until the fast freeze operation is deactivated automatically or manually. Green Indicator is lit when the appliance is connected to the mains and will glow if there is electricity present. Red Indicator is lit to alert you of a high temperature warning. If the red indicator remains switched on, wait 24-hours before calling the service centre.