Panasonic WH-SDC03H3E5 Service Manual page 94

12.1.10 Cool + Tank Mode Operation
1. 3 ways valve control:
3 ways valve switch to room side during room cooling interval and switch to tank side during tank heat-up
-
interval. Both mode will switch alternately. Tank mode is the initial mode of cool + tank mode.
2. Heat pump operation control:
a) During room operation interval
Follow normal cooling operation.
-
Switch to Tank side depends on below case:
Case 1:
[Previous switch from tank interval to room interval is due to tank thermo OFF.]
Switch to tank heat-up interval when Tank temperature < Tank Thermo ON temperature (Room interval will
-
ends)
Case 2:
[If cooling operation at room side is less than 30 minutes and switch to tank side for 3 times consecutively]
Maintain at room cooling interval regardless of the tank temperature. Switch to tank heat-up interval only
-
when (Room interval timer is complete OR Room heat pump thermo OFF) AND Tank temperature < Tank
thermo ON temperature.
Case 3:
[Previous switch from tank interval to room interval is due to tank interval timer is complete]
Maintain at room cooling interval regardless of the tank temperature. Switch to tank heat-up interval only
-
when (Room interval timer is complete OR Room heat pump thermo OFF) AND Tank temperature < Tank
thermo ON temperature.
*Tank Thermo ON temperature:
Internal Tank Heater
b) During tank heat-up interval
Tank interval is the first mode running when the cool + tank mode is select.
-
Switch to room interval only when tank achieve tank thermo OFF OR tank heat-up interval timer is complete.
-
Heat pump operates according to normal tank mode operation.
-
3. Room heater control:
a) During room cooling interval
Room heater is OFF and not operates.
-
4. Tank heater control:
a) During room cooling interval
i. If external tank heater is select.
External heater ON/OFF according to external tank heater operation control.
-
ii. If internal tank heater is select and tank heater ON
Internal tank heater will not function under room cooling interval.
-
b) During tank heat-up interval
i. If external tank heater is select
Once room cooling interval switch to tank heat-up interval, tank heater will turn OFF and tank heater
-
delay timer will start counting.
Tank heater turns ON after tank heater delay timer is fulfill and tank temperature is lower than tank
-
set temperature.
Tank heater delay timer is clear when switch to room cooling interval.
-
ii. If internal tank heater is select and tank heater ON.
Internal tank heater will turn ON after heat pump thermos off to boil tank temperature to tank set
-
temperature.
<Tank set temperature + R/C setting (Tank re-heat temperature)
select USE
Others <Tank water set temperature + R/C setting (Tank re-heat temperature)
94