WH-SDC03H3E5-1, WH-SDC05H3E5-1, WH-SDC07H3E5-1, WH-SDC09H3E5-1, WH-UD03HE5-1, WH-UD05HE5-1, WH-UD07HE5-1, WH-UD09HE5-1 - Panasonic Air Conditioner Service Manual Simplified (repair manual). Page 115

115 

Tank side (Tank mode) 

1)  When tank mode select and force heater bit received, turn ON backup heater (INTERNAL) or Booster Heater 

(External) depend on the tank heater selection. 

2)  If tank heater selection is INTERNAL, follow normal thermo judgement to switch 3 ways valve to tank side 

and room side. 

3)  If tank heater selection is EXTERNAL, only turn ON booster heater according to tank thermo. 

Tank Heater selection is INTERNAL: 
Backup Heater ON Condition: 
a)  After water pump operate 2 mins AND 
b)  When tank temperature < Tank set temperature - [Remocon Set Tank Re-heat Temp] AND 
c)  20 minutes since previous backup heater OFF AND 
d)  Backup heater enable 

 

Backup Heater OFF Condition: 
a)  Force mode OFF OR 
b)  When tank temperature > Tank set temperature for continuous 15 secs OR 
c) Tank 

Operation 

OFF 

 

Tank Heater selection is EXTERNAL: 
Backup Heater ON Condition: 
a)  Force Heater mode ON AND 
b)  Tank temperature < tank set temperature + [Remocon Set Tank Re-heat Temp] - 1°C,  AND 
c)  20 minutes since previous heater off. 

 

Backup Heater OFF Condition: 
a)  Tank temperature > tank set temperature for continuous 15 sec 
b)  Force mode OFF 
c)  Tank Mode Operation OFF 

 

(During tank interval or tank mode condition, water pump and 3 ways valve will OFF) 

Powerful mode is use to increase the capacity of heat pump to achieve higher target temperature. Powerful mode is 
applicable when heat mode is operating. 
 
Remote control setting: 
On quick menu of remote control, there is 4 options of powerful mode can be select. 

  OFF 

 

: Cancel powerful mode 

  30 minutes   

: Set powerful for 30 minutes 

  60 minutes   

: Set powerful for 60 minutes 

  90 minutes   

: Set powerful for 90 minutes 

 
Control contents: 
During the time set by remote control, powerful will activate according to 2 shift up controls. However, this function is 
applicable only for heating. Remote control will transmit the signal to indoor unit once this function is select then 
transmit OFF signal to indoor when the timer is complete. Indoor will transmit signal to outdoor for frequency control. 
 
Indoor setting temperature shift 
 

  If system is standard system (Optional PCB is not connected) 

o  Target water temperature will shift up to Wlo or Whi whichever higher. 

  If system is extension system (Optional PCB is connected) 

o  Target water Zone 1 and Zone 2 temperature will shift up to Wlo or Whi whichever higher. 

 
* If “Direct Type” temperature control is select, this powerful shift up setting is not effective. 

  Start condition 

o  Powerful function is select by remote control. 

  End Condition 

o  OFF/ON button is pressed. 
o  Powerful function is OFF by remote control.