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New Owner post install and Commissioning Samsung GEN 7 16Kw seems to be stuck below the target indoor temp

 
Air Source Heat Pumps (ASHPs)
Last Post by JamesPa 4 hours ago
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 antonical
(@antonical)
New Member Member
Joined: 1 month ago
Posts: 5
Topic starter 06/03/2026 8:13 pm  

Hello,

We have just had our Samsung Gen 7 16kW system installed and upgraded 12 radiators. The system is amazing at DHW. The system is configured to use the indoor thermostat on the Wired remote control unit and weather compensation water law. It seems to ignore the thermostat target temp. Currently, the settings are:

Weather Compensation
2011 WC: Low Outside Temp Point -7°C -20 - 5°C    
2012 WC: High Outside Temp Point 10°C 10 - 20°C    
2021 WC: Flow Temp at Low Outside Temp 50°C 17 - 65°C    
2022 WC: Flow Temp at High Outside Temp 35°C 17 - 65°C Good  
2031 WC Zone2: Flow Temp at Low Outside Temp 50°C 17 - 65°C    
2032 WC Zone2: Flow Temp at High Outside Temp 35°C 17 - 65°C    
 

It's seems to be stuck at 18.5Deg internal temp. Regardless of the thermo settings on teh remote control. 

The installer is suggesting we adjust the water law up by 1 deg per day to see what the impact on the real world building is. We are used to 21 deg and the house is definitely cold.  We mistakenly thought by putting the thermostat up it would just ge there but seems stuck at 18.5 Deg. 

Any suggestions from the Samsung veterans on here would be appreciated.

Cheers



   
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JamesPa
 JamesPa
(@jamespa)
Illustrious Member Moderator
Joined: 3 years ago
Posts: 4410
06/03/2026 9:34 pm  

Posted by: @antonical
↑

It's seems to be stuck at 18.5Deg internal temp. Regardless of the thermo settings on teh remote control. 

The installer is suggesting we adjust the water law up by 1 deg per day to see what the impact on the real world building is. We are used to 21 deg and the house is definitely cold.  We mistakenly thought by putting the thermostat up it would just ge there but seems stuck at 18.5 Deg. 

Any suggestions from the Samsung veterans on here would be appreciated.

Your installer may well be right.  If the WC curve isnt set high enough the house will never reach temperature irrespective of the set temperature value, because the rads wont be emitting sufficient heat to offset the energy lost from the house.   Are you operating 24x7 with TRVs all open?  If not then do that first, leave for 24 hrs and see what happens.

If you are operating 24x7 with TRVs all open then I suggest you do what your installer says.  Better still, before you do,  turn the set temp up to say 23 and adjust  the WC curve one degree per day until the house is just at the right temp, which is the way to optimise the WC.


This post was modified 4 hours ago by JamesPa
This post was modified 3 hours ago by JamesPa

4kW peak of solar PV since 2011; EV and a 1930s house which has been partially renovated to improve its efficiency. 7kW Vaillant heat pump.


   
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