With the iGrow 1400 you can program up to 4 Stage Overrides.
Here is a video to give you a more in depth understanding.
Grow1400 Stage Overrides Programming
Now the Stage Overrides are useful for testing purposes, where you can force the iGrow1400 into any of the heating or cooling stages. They are also useful for fumigation, where there are spraying cycles the require everything to be closed and then exhaust cycle where air exchange takes place.
To Program Stage Overrides from the Home screen hit Enter/Menu -> the highlight Stage Overrrides and hit Enter/Menu
It is possible to override one, to four, of the setpoint settings by forcing the zone into one of the cooling, heating or normal stages for a selected time period. There are four possible stage override programs.
When you go to the stage override screen, the first highlighted segment is the Stage Override #. Use of the + or - keys selects one of the 4 setpoints you wish to override. The next field is used to enable the override. This is done by toggling the field from Off to On.
Select Stage Override Number When Stage Override 1 is highlighted press the + or – buttons to select which of the 4 Stage Overrides you want to set.
Force to Stage --------- With the use of the + or -, you can select the stage that you want to force the zone into.
Time Start and Stop Enter the times of day you want the overrides condition to begin and end.
One Time Only or Daily Choices for this field are Daily or One Time Only. If “One Time Only” is selected, once the override is completed, it will not occur again without being reset to On. If Daily is selected, the override will occur every day during the time window.