Panasonic WH-ADC0309H3E Service Manual

Contents

Panasonic WH-ADC0309H3E Service Manual Manual pdf 114 page image

11412.17 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. Water pump turn OFF when ANY of below conditions is fulfilled:o Outdoor ambient temperature ≥ 4°C.o During -5°C < outdoor ambient temp. < 4°C After water pump ON for 4 minutes, and water inlet temp. ≥ 8°C. Else, shift to back up heater anti freeze control.o During outdoor ambient temp. < -5°C After water pump ON for 4 minutes, and water inlet/outlet ≥ 20°C. Else, shift to back up heater anti freeze control. However, if flow switch is abnormal (H62), then water pump circulation anti freeze control will not activate.3. Back up heater anti freeze control: Back up heater turn ON when ALL below conditions is fulfilled:o Water inlet/outlet temp. < 6°C.o Water pump circulation anti freeze control activated and water pump ON for 4 minutes. Back up heater turns OFF when ANY of below conditions is fulfilled:o Water inlet/outlet temp. > 28°C.o Water pump circulation anti freeze control deactivated/water pump OFF. However, if back up heater is abnormal (H70) then back up heater anti freeze control will not activate.12.17.1 Zone Anti-Freeze Control If buffer tank selection is “NO” and Anti- Freeze function select “NO” from remote control, this control cannotactivate.Start condition: After [5] min from previous Zone pump off. AND Outdoor air temp < [3] °C OR Outdoor sensor is abnormal. AND Zone water temperature < [6]˚C OR Zone Sensor Short or OpenCancel condition: After water Zone pump ON [4] min AND Outdoor air temp ≥ [4]°C OR During -5 °C ≤ Outdoor air temp < [4] °C ORZone water temperature sensor > [8] °C During Outdoor air temp < [-5] °CZone water temperature sensor > [20] °C*However, Zone water temperature sensor is Open or Short, Condition C and D is ignored.