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Fan running in hot weather ...why?

 
Air Source Heat Pumps (ASHPs)
Last Post by ASHP-BOBBA 4 months ago
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 Lokisam
(@lokisam)
Estimable Member Member
Joined: 2 years ago
Posts: 29
Topic starter 11/07/2025 3:36 pm  

The fan of my Samsung Gen 6 outdoor unit has been running on and off all day today. Its just the fan, not the compressor. It has done it before in hot weather but have no idea why. The system is not supposed to cool as far as I'm aware. It is on but the thermostat is set to 12 so of course the heating isn't called for. Any ideas?



   
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bontwoody
 bontwoody
(@bontwoody)
Noble Member Contributor
Joined: 4 years ago
Posts: 943
11/07/2025 3:56 pm  

Posted by: @lokisam
↑

The fan of my Samsung Gen 6 outdoor unit has been running on and off all day today. Its just the fan, not the compressor. It has done it before in hot weather but have no idea why. The system is not supposed to cool as far as I'm aware. It is on but the thermostat is set to 12 so of course the heating isn't called for. Any ideas?

Not really but mine does exactly the same thing. 

 


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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 ASHP-BOBBA
(@ashp-bobba)
Prominent Member Member
Joined: 11 months ago
Posts: 302
11/07/2025 5:52 pm  

Posted by: @lokisam
↑

The fan of my Samsung Gen 6 outdoor unit has been running on and off all day today. Its just the fan, not the compressor. It has done it before in hot weather but have no idea why. The system is not supposed to cool as far as I'm aware. It is on but the thermostat is set to 12 so of course the heating isn't called for. Any ideas?

I wonder if it has some kind of pressure transducer to control the refrigerant pressures or is cooling the electronic components, it has been know some manufacturers use the fan in summer when there is no demand to dry off the evap coil to stop erosion. Unfortunately I am not a Samsung expert so I don't know this machine that well.

 

 

 


AAC Group Ltd covering the Kent Area for design, supply and installation of ASHP systems, service and maintenance, diagnostics and repairs.
Professional installer. Book a one-to-one consultation for pre- and post-installation advice, troubleshooting and system optimisation.


   
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