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        Displays the number of the day of the week. 1 Being Monday. | 
     
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        Displays the set or measured temperature. | 
     
      |  |  | 
        Displays the current time. 
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        Displays the number of the active (selected) program. | 
     
      |  |  | 
        Indicates the thermostat is calling for heat. | 
     
      |  |  | 
        Displays the configured Heating Zones. | 
     
      |  |  | 
        Displays the Hot Water Control Zone. | 
     
      |  |  | 
        Indicates the thermostat is calling for Hot Water. | 
     
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        Indicates that the thermostat is transmitting a wireless signal to the Receiver or is receiving a signal from the iT300 Sensor. | 
     
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        Indicates the Touch / Screen Lock is activated. | 
     
      |  |  | 
        Indicates when the battery is low on charge. | 
     
      |  |  | 
        Displays when the thermostat is in Holiday Operation Mode. | 
     
      |  |  | 
        The globe icon shows when iT500 has an internet connection. | 
     
      |  |  | 
        Shows when a Zone is in Cooling Mode, not Heating Mode. | 
     
      |  |  | 
        Shows when Hot Water is set to ‘Continually On’. | 
     
      |  |  | 
        Shows when Hot Water is set to ‘Once Mode’. | 
     
      |  |  | 
        Shows when the thermostat is in Automatic Programs Mode. | 
     
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        Shows when the thermostat is in ‘Off Mode’. | 
     
      |  |  | 
        Shows the thermostat is in Manual Override or Settings Mode. |