WH-SDC12H6E5, WH-SDC16H6E5, WH-UD12HE5, WH-UD16HE5 - Panasonic Air Conditioner Service Manual (repair manual). Page 117

117 

Quiet mode is use to reduce the noise of outdoor unit by reducing the frequency or fan speed. 
 
Quiet level 
There are 3 level (Level 1, Level 2, Level 3) to set by quick menu function on remote control. 
 
Control content 
Once the quiet function is select, the remote control will transmit the signal to indoor and outdoor unit. 
 
Start condition 

-  Quiet mode is set on remote control. 
-  Quiet mode is request ON by weekly timer. 

Stop condition 
If any of below condition is achieve. 

-  OFF/ON button is pressed. 
-  Quiet mode is OFF by remote control. 
- 

Quiet mode is request OFF by weekly timer.

 

Purpose: 

-  To sterilize water tank by setting the required boiling temperature. 

Remote control setting 

-  Days for sterilization function to start can be select. 
-  Time of selected day to start sterilization function. 
-  Boiling temperature (External heater is 55°C ~ 75°C, Internal heater is 55°C ~ 65°C) 
-  Maximum operation time is 5 minutes to 1 hour. 

Start condition 

-  Tank connection set to “YES” by remote control 
-  Sterilization function selects “YES”. 
-  Sterilization signal received from remote controller by timer. 
-  Tank mode request ON. 

Stop condition 

-  When boiling timer is completed. Boiling timer (Remote control set maximum operation time) start counting 

once tank achieve boiling set temperature OR 

-  After 8 hours of operation since sterilization start. 
-  Tank mode request OFF. 

Control content: 

-  During sterilization function activation time, target tank set temperature will internally change to boiling set 

temperature. 

-  During sterilization activates, heat pump and heater (external or internal) will operate as normal tank mode to 

achieve the boiling set temperature. 

-  Sterilization operation will end when stop condition is fulfill. 
-  After sterilization is complete, tank set temperature will resume to normal operation. 

* Tank temperature may not achieve boiling set temperature if tank heater is select OFF OR external compressor 
switch.