8212.13 Heating Outdoor Ambient Thermo OFF Control Purpose:o To stop provide heating to room side during high outdoor ambient condition Control content:o Heating outdoor ambient thermo off control only effective when heat pump operates in heat mode to roomside. (This control will not activate when running in tank side)o Heat pump and water pump will turn OFF when outdoor ambient is higher than outdoor thermo off settemperature.o Heat pump will ON back when outdoor ambient temperature < Outdoor thermo off set temperature + [1°C].12.14 Quiet Operation Purpose:o To provide quiet operation compare to normal operation by reduces outdoor unit noise. Starting condition:o When quiet button is presses.o When quiet is request to ON by weekly timer. (Refer to control panel) When any of above mentioned condition is achieved, this control is activated.New target FM speed = Present target FM speed – 80 rpmMinimum target FM speed = 200 rpm Cancellation condition:o Cancel by pressing quiet button.o Stop by OFF/ON buttono When quiet is request to OFF by weekly timer.12.15 Anti Freeze Control Anti freeze protection control menu can be set YES or NO by control panel. In heatpump system, there are 3 types of anti freeze control:1. Expansion tank anti-freeze control Expansion tank anti freeze heater ON condition:o Outdoor ambient temp. < 3°C Expansion tank anti freeze heater OFF condition:o Outdoor ambient temp. > 4°C2. Water pump circulation anti freeze control Water pump turns ON when ALL below conditions are fulfilled:o Heatpump OFF (stand by) OR error occurs.o Water flowing flag is ON.o Water flow switch is not abnormal.o Outdoor ambient temp. < 3°C OR outdoor ambient temp. sensor is abnormal.o Water inlet/outlet temp. < 6°C.o After 5 minutes from previous water pump OFF.Outdoor thermo off settemperature + 3°COutdoor thermo off set temperature +1°COFFON