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DHW temp Samsung AE120RXYDEG 12kw ASHP with Gen 6 controller

 
Air Source Heat Pumps (ASHPs)
Last Post by bontwoody 5 hours ago
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 BAMi
(@bami)
Trusted Member Member
118 kWhs
Joined: 7 days ago
Posts: 23
Topic starter 15/03/2025 8:36 pm  

Had my Samsung ASHP installed start November.  They left the DHW temp at 50C and set to go on and off all the time to keep the water at 50C.  The tank is huge, I live alone and only use hot water for a shower in the evening so this seemed uneconomical to me.

Following excellent advice on here I've now set a schedule for the DHW to come on for 2 hours in the afternoon and reduced the water temp to 43C.  But the DHW still seemed to be way too hot.

I had a look when the DWH was on today and as you can see the set temp is for 43C but the actual temp is over 47C.  It still seems to be wanting to heat to 50C it seems to me.

I've looked in the field values and can see no way to set the DHW temp from there (unless I'm missing something). 

Any Samsung owners have an idea why the DHW is heating hotter than the set temperature?

IMG 20250315 151352211 HDR

   
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bontwoody
 bontwoody
(@bontwoody)
Noble Member Contributor
5116 kWhs
Joined: 3 years ago
Posts: 759
15/03/2025 8:51 pm  

@bami it may be to do with the position of the temperature sensor in the tank. If it’s half way down the top of the tank will be hotter than the set temperature due to stratification. 
If so do you can drop the temperature further and still have plenty of hot water

although I’ve just noticed the image but it could still be a sensor position issue as hot water will rise even after the heat pump has stopped heating for a time especially if the coil is low down in the tank. 

This post was modified 5 hours ago by bontwoody

House-2 bed partial stone bungalow, 5kW Samsung Gen 6 ASHP (Self install)
6.9 kWp of PV
5kWh DC coupled battery
Blog: https://thegreeningofrosecottage.weebly.com/
Heatpump Stats: http://heatpumpmonitor.org/system/view?id=60


   
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 BAMi
(@bami)
Trusted Member Member
118 kWhs
Joined: 7 days ago
Posts: 23
Topic starter 15/03/2025 8:55 pm  

@bontwoody thank you oh wise one 🙏🏻 😉


   
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bontwoody
 bontwoody
(@bontwoody)
Noble Member Contributor
5116 kWhs
Joined: 3 years ago
Posts: 759
15/03/2025 9:01 pm  

@bami lol. I could be wrong 😆

House-2 bed partial stone bungalow, 5kW Samsung Gen 6 ASHP (Self install)
6.9 kWp of PV
5kWh DC coupled battery
Blog: https://thegreeningofrosecottage.weebly.com/
Heatpump Stats: http://heatpumpmonitor.org/system/view?id=60


   
😂
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 BAMi
(@bami)
Trusted Member Member
118 kWhs
Joined: 7 days ago
Posts: 23
Topic starter 15/03/2025 9:04 pm  

@bontwoody if the tank blows up or sets on fire I'll track you down and haunt you 👻😆


   
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bontwoody
 bontwoody
(@bontwoody)
Noble Member Contributor
5116 kWhs
Joined: 3 years ago
Posts: 759
15/03/2025 9:13 pm  

@bami I feel pretty safe then 😁. As a matter of interest where abouts is the coil and the sensor ?

House-2 bed partial stone bungalow, 5kW Samsung Gen 6 ASHP (Self install)
6.9 kWp of PV
5kWh DC coupled battery
Blog: https://thegreeningofrosecottage.weebly.com/
Heatpump Stats: http://heatpumpmonitor.org/system/view?id=60


   
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