Data Aire dap4 User Manual page 8

Compressor On - A number will also appear next to the icon to
indicate multiple compressors are running. If variable type, speed
modulation is also shown.
Humidifier On - If variable type, humidity demand modulation is also
shown.
Dehumidification Mode Running.
Heaters On - A number will also appear next to the icon to indicate
multiple heaters are on. If SCR heat type, heat modulation is also
shown.
Chilled Water Cooling On – Valve modulation is also shown.
Energy Saver Available – Shown when chilled water is cold enough
to provide cooling rather than only running compressors.
CO2 Valve On – This option only available on gPOD model.
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