Daikin FTXS09DVJU - Freeze-Up Protection Control; Heating Peak-Cut Control

SiUS04-702 Control Specification (15/18/24 Class)
Function and Control 53
4.6 Freeze-up Protection Control
Outline During cooling operation, the signals being sent from the indoor unit allow the operating frequency
limitation and then prevent freezing of the indoor heat exchanger. (The signal from the indoor unit
must be divided into the zones as the followings.
Detail Conditions for Start Controlling
Judge the controlling start with the indoor heat exchanger temperature after 2 sec from operation
start.
Control in Each Zone
4.7 Heating Peak-cut Control
Outline Heat Pump Only
During heating operation, the signals being sent from the indoor unit allow the operating frequency
limitation and prevent abnormal high pressure. (The signal from the indoor unit must be divided as
follows.)
Detail Conditions for Start Controlling
Judge the controlling start with the indoor heat exchanger temperature after 2 min from operation
start.
Control in Each Zone
The heat exchange intermediate temperature of indoor unit controls the following.