Panasonic WH-SDC03E3E5 Series, Service Manual

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12.13 Sterilization Mode
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Purpose:
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Boil tank temperature to customer set boiling temperature to operate sterilization.
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Control start condition:
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Tank connection set to YES by remote controller
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Sterilization function selection is YES
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Sterilization signal received from remote controller by timer.
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Control stop condition:
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After boiling timer completed. Boiling timer start counting once tank achieve boiling set temperature OR
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After 4 hours of operation since sterilization function start OR
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Control content:
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Once the sterilization function enable, set the target tank temperature to Boiling Set Temperature.
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Booster heater will allow to ON during solar priority SET condition.
ƒ Booster heater OFF Temp. = Boiling Set Temperature 0°C
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Booster heater ON Temp. = Boiling Set Temperature - 7°C
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The sterilization set temperature may not achieve if tank booster heater function is deactivated.
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Boiling timer which set by remote controller will start count after tank achieve boiling set temperature.
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Sterilization operation will end after complete boiling timer or Max 4 hrs from function start.
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Target tank temperature will set back to normal tank set temperature.
* Tank heater control is not affected by solar pump when solar priority set.
12.14 Quiet Operation
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Purpose:
- To provide quiet operation compare to normal operation by reduces outdoor unit noise.
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Starting condition:
1 When quiet button is presses.
2 When quiet request ON time by weekly timer (Refer to control panel.)
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When any of above mentioned condition is achieved, this control is activated.
New target FM speed = Present target FM speed - 80 rpm
Minimum target FM speed = 200 rpm
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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.
12.15 Anti Freeze Control
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Anti freeze protection control can be select YES or NO from control panel. Default setting is YES.
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In heatpump system, there are 2 types of anti freeze control:
1 Water pump circulation anti frost control
ƒ Water pump turns ON when ALL the below conditions are fulfilled:
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Heatpump OFF (standby) OR water pump stop (Tank Mode) OR error occurs
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Water flow switch is not abnormal
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Outdoor ambient temp. < 3°C
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Water inlet/outlet temp. < 6°C
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After 5 minutes from previous water pump OFF
ƒ Water pump turns OFF when ANY of the below conditions is fulfilled:
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Outdoor ambient temp. ≥ 4°C
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During -5°C < outdoor ambient temp. < 4°C
ƒ After water pump ON for 4 minutes, and water inlet/outlet temp. ≥ 8°C
ƒ Else, shift to backup heater anti freeze control
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During outdoor ambient temp. < -5°C
ƒ After water pump ON for 4 minutes, and water inlet/outlet temp. ≥ 20°C
ƒ Else, shift to backup heater anti freeze control
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However, if flow switch is abnormal (H62), then water pump circulation anti freeze control will not activate.