Night Shift Function - Hitachi YUTAMPO Series Service Manual

3 Control functions

Night Shift Function

3.8 Night Shift Function
It is possible to reduce the compressor load with the intention of decrease the noise during the night time. When Night
Shift function is active, the capacity of the YUTAMPO unit is reduced to the percentage defined in the menu and Night
Shift icon is displayed in the general notifications zone of the LCD controller.
Night shift is disabled by default. Timer enabled activates the function. Once timer is enabled the function is activated
and it is possible to adjust the period of time that the function is operating at the lower capacity set.
Night shift can be configured from the LCD controller to be launched from the Favourite button. Then, Favourite button
works like an ON/OFF button:
• When Night shift timer is enabled at the Night shift menu, Favourite button lets start or stop the night shift function
before the specified time. The night shift cycle ends when the timer arrives to the stopping time. The timer cycle starts
again the next day.
• When Night shift timer is not enabled at the Night shift menu, Favourite button starts or stops the Night shift function
like an ON/OFF switch. When Favourite button launches Night shift function, this works until Favourite button is
pressed again.
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N O T E
• During Night shift mode, the capacity given by the Outdoor unit is reduced according to the percentage defined by user. This function,
however, may drive to an uncomfortable situation.
• This function is available for Heating, Cooling and DHW applications.
• In case of defrost and compressor protection operation, this function is not applicable.
• Protection of the Indoor unit can override this function.
• Protection of the Outdoor unit can override this function.
24 SMGB0135 rev.0 - 06/2020
Ratio of reduction in heat pump capacity
Status of activation of Night Shift (reduction of
compressor load in order to reduce operation
noise during the night hours)
Starting time of Nigh Shift operation
Ending time of Night Shift operation