WH-ADC0916H9E8, WH-UD09HE8, WH-UD12HE8, WH-UD16HE8, WH-UX09HE8, WH-UX12HE8, WH-UX16HE8, WH-UQ09HE8, WH-UQ12HE8, WH-UQ16HE8 - Panasonic Air Conditioner Service Manual (repair manual). Page 116

116 

If Buffer selection is “YES” 
Room side 
New Target Buffer tank temperature = Current Target Buffer Tank Temperature * Remote Control setting  
(" capacity 2) % 
* Max Min regulation is follow Target Buffer tank temperature control specification 
** No change of Target zone water temperature, only set higher buffer tank temperature. 
 
DHW Tank side 
New Tank Set Temperature = Tank Set Temperature * Remote Control setting for DHW ("Capacity 2) % 
* (Max regulation depends on the tank max setting limit) 
 
If Buffer selection is “NO” 
Room side 
New Target Zone Water Temperature = Current Target Zone Water Temperature * Remote Control Setting 
(*Capacity 2) % 
(Zone 1 and Zone 2 will change according to it's own target zone water temperature.) 
(Max regulation depend on the temperature control type select) 
 
DHW Tank side 
New Tank Set Temperature = Tank Set Temperature * Remote Control setting for DHW ("Capacity 2) % 
* (Max regulation depends on the tank max setting limit) 
** This function is not applicable for Cooling mode. 

Remote control setting: 

  When Optional PCB connection select 'YES", Demand Control function can select "YES" or "NO". 

 
Purpose: 

  After the demand control select YES, below control will activated. 

o 0-10V 

Demand 

control 

 
0-10V Demand control 

  Demand control is use to reduce the current usage of heat pump unit by third party device. 

 
Control start condition: 

  Select “YES” at Demand control at installer menu. 

  0-10V input for this electrical current control is detected. 

 
Control content: 

  If start condition is fulfilled, indoor will receive the voltage signal from optional PCB. Indoor will send the rate 

value to outdoor unit. 

  Outdoor will change the current limit according to the percentage receive from indoor unit. 

 Purpose: 

Promotes energy saving by allowing the user to stop the system during holiday and enables the system to 
resume at the preset temperature after holiday. 

 

 Control 

details: 

o  Indoor operate the unit according running mode request. Target temperature will follow holiday setting 

temperature. 


  If heat mode request is receive, Target Water Out Temperature will change according to holiday shift 

temperature set. 
[If heat is set OFF at holiday, unit, water pump and zone control will OFF] 



  If tank mode request is receive, Target Tank Set Temperature will change according to the holiday tank 

shift temperature set. 
[If tank is set OFF at holiday, heat pump and tank heater will OFF] 

o  After days of holiday have been set, heat pump will stop and only resume operation at the end of holiday 

countdown. 

 

 Start 

condition: 

o  Holiday timer set and the holiday timer start 

* The day holiday mode was set is counted as day 1.