Panasonic WH-SDF09C3E8 - Tank Booster Heater Control; Three Way Valve Control; Sterillization Mode; Quiet Operation

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12.10 Tank Booster Heater Control
12.10.1 Tank Booster Heater Control
Heating operation condition:
1 Booster heater Turn On condition:
o After BOOSTER HEATER DELAY TIMER fulfil during heatpump startup time in tank mode, or during
switching from heating heat-up interval to tank heat-up interval in heat+tank mode (heating priority not
set).
o Tank temperature < Tank set temperature + [-5°C],
o 20 minutes since previous heater off.
* BOOSTER HEATER DELAY TIMER is clear when tank heat-up interval end.
2 Booster heater Turn Off condition:
o Tank temperature > Tank set temperature + [+2°C] for continuous 15 sec
o When BOOSTER HEATER DELAY TIMER start count after switch from heating heat-up interval to tank
heat-up interval
* DELAY TIMER can be set by control panel.
12.11 Three Way Valve Control
 Purpose:
- 3 ways valve is used to change flow direction of hot water from heatpump between heating side and tank side
 Control contents:
1 3 ways valve switch Off:
o During 3 ways valve switch Off time, the hot water will provide heat capacity to heating side.
2 3 ways valve switch On:
o During 3 ways valve switch On time, the hot water will provide heat capacity to tank side.
3 Stop condition:
o During stop mode, 3 ways valve will be in switch off position
12.12 Sterillization Mode
1 During sterillization mode, tank will be heat up to the sterillize set temperature for a certain period of time,
also set by controller.
2 The function can only be set on timer to operate once in a week.
3 It will be cancelled even when the temperature is not reached after 4 hours.
4 When tank mode is OFF or disabled, sterillization is cancelled.
12.13 Quiet Operation
 Purpose:
- To provide quiet operation compare to normal operation by reduces outdoor unit noise.
 Starting condition:
1 When quiet button is presses.
2 When quiet request ON time 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 - 80rpm
Minimum target FM speed = 200rpm
 Cancellation condition:
1 Cancel by press quiet button
2 Stop by OFF/ON button
3 When quiet request OFF time by weekly timer
When any of above mentioned condition is achieved, this control is cancelled.