User’s Manual EM11A017
DCM601A71 intelligent Touch Manager
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5-3 Setting up the Auto Changeover
The Auto Changeover function allows you to automatically toggle the operation mode of air
conditioners that do not support the “Automatic” mode, depending on the change in the room
temperature. Furthermore, this functions automatically changes the setpoint when it changes the
operation mode.
If this function is enabled, the function assesses the control conditions from the representative
room temperature and representative setpoint every 5 minutes and toggles the operation mode
when the conditions for toggling are satisfied. No assessment is performed in the 30 minutes that
follows an operation mode change to cooling. However, if the setpoint is changed, an assessment
is performed immediately, and then, once every 5 minutes.
The assessment of the control condition is performed according to the following four patterns
depending on the thermal difference settings. If the thermal difference setting is 0 to 4°F, the
operation mode is changed to keep the thermal preservation range constant at 6°F.
• When
Representative suction temperature – Representative setpoint (Heat) > Thermal difference,
operation mode is changed from Heat to Cool
• When
Representative setpoint (Cool) – Representative suction temperature > Thermal difference,
operation mode is changed from Cool to Heat
°F
Representative
setpoint (Cool)
Heating mode
Representative
suction
temperature
Heating mode
Cooling mode Heating mode
Thermal difference in °F
Representative
setpoint (Heat)
<When the thermal difference is 5°F or more>
When the thermal difference is 5°F or more
Cooling mode
Heating mode Cooling mode
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