Forums

Forums
Renewable Heating
Air Source Heat Pum...
12kW Samsung gen 6 ...
 
Notifications
Clear all

12kW Samsung gen 6 short cycling

 
Page 16 / 32
Air Source Heat Pumps (ASHPs)
374 Posts
17 Users
63 Reactions
62.5 K Views
RSS
 Craig1980
(@craig1980)
Reputable Member Member
Joined: 2 years ago
Posts: 146
Topic starter 30/11/2022 10:48 pm  

 Running 

20221130 214002

Stopped

 

Screenshot 20221130 214613 Gallery

Nothing particularly jumps up or down when pump restarts but you can see some figures have dropped when it stops. 

 

 

 


   
ReplyQuote
 Derek M
(@derek-m)
Illustrious Member Member
Joined: 4 years ago
Posts: 4429
30/11/2022 11:14 pm  

@craig1980

As you say, nothing appears to be changing dramatically. Though I fail to understand how your home is maintaining an indoor temperature of 18C, with an outdoor temperature of 6C.

Now try setting your system in fixed LWT mode with a setting of 35C.

 


   
ReplyQuote
 Craig1980
(@craig1980)
Reputable Member Member
Joined: 2 years ago
Posts: 146
Topic starter 30/11/2022 11:23 pm  

@derek-m I've no idea. 🤣

I turned the system off for the Octopus saving session at 17:30 room stats showing 18. Went out and came back at 20:30. Turned back on and room stats were at 17.5. Not sure if you need that info but just in case it's relevant. 

I'll have to work out how to set fixed lwt mode. I'll do it tomorrow. Thanks again. 


   
ReplyQuote
 Craig1980
(@craig1980)
Reputable Member Member
Joined: 2 years ago
Posts: 146
Topic starter 01/12/2022 8:53 am  

@derek-m overnight it was 4 degrees and it has struggled to keep 18. The house is at 17.5 this morning. COP is down to 3.3 and it's using more power and running for longer. 15.6kw yesterday 13.3hours operation time (that's with turning off for 3hours)and a generation of 51.7.


   
ReplyQuote
 Craig1980
(@craig1980)
Reputable Member Member
Joined: 2 years ago
Posts: 146
Topic starter 01/12/2022 8:53 am  

@derek-m overnight it was 4 degrees and it has struggled to keep 18. The house is at 17.5 this morning. COP is down to 3.3 and it's using more power and running for longer. 15.6kw yesterday 13.3hours operation time (that's with turning off for 3hours)and a generation of 51.7.


   
ReplyQuote
 Craig1980
(@craig1980)
Reputable Member Member
Joined: 2 years ago
Posts: 146
Topic starter 01/12/2022 9:58 am  

I'm struggling to find where to switch to fixed LWT mode. 🙈

Although, whilst looking through the manual I found the page about removing the room stats from the system. Would this be an option? Thanks

20221201 085641

   
ReplyQuote



 Craig1980
(@craig1980)
Reputable Member Member
Joined: 2 years ago
Posts: 146
Topic starter 01/12/2022 10:12 am  

Is this what you mean?

 


   
ReplyQuote
 Derek M
(@derek-m)
Illustrious Member Member
Joined: 4 years ago
Posts: 4429
01/12/2022 10:31 am  

Posted by: @craig1980
↑

Is this what you mean?

 

Yes, that would appear to be the correct method. Try running with a LWT of 35C and see how the system responds, and if it stops the 20 second off periods.

 


   
ReplyQuote
 Craig1980
(@craig1980)
Reputable Member Member
Joined: 2 years ago
Posts: 146
Topic starter 01/12/2022 11:31 am  

Okay, that's done. It was already on standard temperature "water outlet". Could that have been an issue? 


   
ReplyQuote
 Derek M
(@derek-m)
Illustrious Member Member
Joined: 4 years ago
Posts: 4429
01/12/2022 12:01 pm  

@craig1980

How is the system operating now? Is it still running 8 mins on and 20 secs off?

What is happening with the room and radiator temps?

What are the flow and temperature readings etc?

Changing the way that the system is being operated is to try to find what is causing the 20 seconds shutdown.


   
ReplyQuote
 Craig1980
(@craig1980)
Reputable Member Member
Joined: 2 years ago
Posts: 146
Topic starter 01/12/2022 12:15 pm  

So, it appears to run constantly but at quite high power usage of 1.9kw instantaneous power. 

Rads feel warmer to the touch but room temp stays at around 18 according to room stats and thermometers that I used for radiator temps. 

Outside temp is 6.0 according to wired remote.

Water outlet 35.4

Indoor 21.5 (remember, this is in the airing cupboard with the UVC). 


   
ReplyQuote
 Derek M
(@derek-m)
Illustrious Member Member
Joined: 4 years ago
Posts: 4429
01/12/2022 12:34 pm  

Posted by: @craig1980
↑

So, it appears to run constantly but at quite high power usage of 1.9kw instantaneous power. 

Rads feel warmer to the touch but room temp stays at around 18 according to room stats and thermometers that I used for radiator temps. 

Outside temp is 6.0 according to wired remote.

Water outlet 35.4

Indoor 21.5 (remember, this is in the airing cupboard with the UVC). 

Now measure the top and bottom temperatures on two or three relevant radiators, and the flow rate and temperature readings from the information screens.

 


   
ReplyQuote



Page 16 / 32
Forum Jump:
  Previous Topic
Next Topic  
Share:

Join Us!

Trusted Installers

Struggling to find a reliable heat pump installer? A poor installation can lead to inefficiencies and high running costs. We now connect homeowners with top-rated installers who deliver quality work and excellent service.

✅ Verified, trusted & experienced installers
✅ Nationwide coverage expanding
✅ Special offers available

👉 Find your installer now!

Latest Posts

x Powerful Protection for WordPress, from Shield Security
This Site Is Protected By
Shield Security →