Philips WH-SDC07C3E5, Service Manual

Page: 87 / 178

87
13.13 Sterillization Mode

Purpose:
o
Boil tank temperature to customer set boiling temperature to operate sterilization.

Control start condition:
o
Tank connection set to YES by remote controlller
o
Serilization function selection is YES
o
Sterilization signal received from remote controller by timer.

Control stop condition:
o
After boiling timer completed. Boiling timer start counting once tank achieve boiling set temperature OR
o
After 4 hours of operation since sterilization function start OR

Control content:
o
Once the sterilization function enable, set the target tank temperature to Boiling Set Temperature.
o
Booster heater will allow to ON during solar priority SET condition.
 Booster heater OFF Temp. = Boiling Set Temperature 0°C

Booster heater ON Temp. = Boiling Set Temperature - 7°C
o
The sterilization set temperature may not achieve if tank booster heater function is deactivated.
o
Boiling timer which set by remote controller will start count after tank achieve boiling set temperature.
o
Sterilization operation will end after complete boiling timer or Max 4 hrs from function start.
o
Target tank temperature will set back to normal tank set temperature.
* Tank heater control is not affected by solar pump when solar priority set.
13.14 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 - 80 rpm
Minimum target FM speed = 200 rpm

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.
13.15 Anti Freeze Control

Anti freeze protection control can be select YES or NO from control panel. Default setting is YES.

In heatpump system, there are 2 types of anti freeze control:
1 Water pump circulation anti frost control
 Water pump turns ON when ALL the below conditions are fulfilled:
o
Heatpump OFF (standby) OR water pump stop (Tank Mode) OR error occurs
o
Water flow switch is not abnormal
o
Outdoor ambient temp. < 3°C
o
Water inlet/outlet temp. < 6°C
o
After 5 minutes from previous water pump OFF
 Water pump turns OFF when ANY of the below conditions is fulfilled:
o
Outdoor ambient temp. ≥ 4°C
o
During -5°C < outdoor ambient temp. < 4°C
 After water pump ON for 4 minutes, and water inlet/outlet temp. ≥ 8°C
 Else, shift to backup heater anti freeze control
o
During outdoor ambient temp. < -5°C
 After water pump ON for 4 minutes, and water inlet/outlet temp. ≥ 20°C
 Else, shift to backup heater anti freeze control

However, if flow switch is abnormal (H62), then water pump circulation anti freeze control will not activate.