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ASHP Cut-off Temperatures: What's Your Setting and is a Your Heating Still On?

 
Air Source Heat Pumps (ASHPs)
Last Post by LeChillou 1 week ago
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Mars
 Mars
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Topic starter 16/04/2024 3:15 pm  

I recently came across an interesting piece of information regarding air source heat pumps where the "accepted" ambient outdoor temperature at which ASHPs are designed to automatically turn off is 18C. Does anyone have this automated – ours isn't automated. If it is automated, at what ambient temperature does your ASHP shut down?

This topic was modified 2 weeks ago by Mars

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 Vince31
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17/04/2024 9:05 am  

Not seen a setting on our ASHP for auto cut-off temp. I normally turn it off manually for heating (not DHW) at the start of May and back on again at end of Sept, but as its manual then I can be flexible either way.  Since install in 2015 ours has been set to maintain a constant 21C 24/7 from Oct to April and this works well.


   
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MikeFl
 MikeFl
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19/04/2024 10:50 am  

My HP is set to "not supply any heat" above 19C external temp i.e. that's the top end of the WCC and above that it'll not run the pump. This isn't "off" though as the room stat might still be calling for heat, and so the internal pumps etc. will still be circulating water. Although at 19C outside I'd hope the house is warm enough.

I'm about to enter (hopefully!) summer #2 with it. I just left it running throughout the year (for CH and HW) - mostly it was doing nothing apart from the odd, chilly night, using <2 kWhs a day. 

Grant Aerona 3 10kW


   
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 Gary
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19/04/2024 12:10 pm  

I don't have auto turn off either but manually change it over to cooling the UFH if its gets too hot in the summer


   
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TechnoGeek
 TechnoGeek
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19/04/2024 1:53 pm  

The Samsung controller does not have an automatic cutoff and I have set mine to 16C. The heating is still on and I just leave it to do its thing and let the smart thermostat make the decisions 🙂


   
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 LeChillou
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19/04/2024 4:13 pm  

@technogeek Yes it does. It's in the field settings


   
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