Forums

Forums
Renewable Heating
Air Source Heat Pum...
Numerous issues – 1...
 
Notifications
Clear all

Numerous issues – 11kW Daikin Altherma 3

 
Page 16 / 21
Air Source Heat Pumps (ASHPs)
Last Post by HCas 11 months ago
252 Posts
19 Users
59 Reactions
36 K Views
RSS
 newhouse87
(@newhouse87)
Reputable Member Member
1546 kWhs
Joined: 2 years ago
Posts: 231
Topic starter 11/04/2023 8:15 pm  

@derek-m think there is a plate heat exchanger in it.


   
ReplyQuote
 newhouse87
(@newhouse87)
Reputable Member Member
1546 kWhs
Joined: 2 years ago
Posts: 231
Topic starter 11/04/2023 8:21 pm  

should i give it more time or is this test telling me its not buh issue so?


   
ReplyQuote
 Derek M
(@derek-m)
Illustrious Member Member
15283 kWhs
Veteran Expert
Joined: 4 years ago
Posts: 4429
11/04/2023 8:29 pm  

@newhouse87

There will be a plate heat exchanger inside the outdoor unit, but that is between the refrigerant gas and the water. You could have another PHE indoors between the primary water and the secondary water.

If the problem has not reappeared by the time you go to bed, then it may not be a BUH problem. I'm afraid my eyesight is not good enough to see what is happening from here.


   
ReplyQuote



 newhouse87
(@newhouse87)
Reputable Member Member
1546 kWhs
Joined: 2 years ago
Posts: 231
Topic starter 11/04/2023 8:31 pm  

@derek-m i have a phe temp reading aswell, is that heat exchanger indoor unit so. Ha, no problem, you have been v helpful, my plumber wouldn't have a clue. i emailed daikin a few hours ago so hopefully they will get back to me. PHE temp generally same or near to lwt. Ill update with what is running next time it happens.


   
👍
1
ReplyQuote
 newhouse87
(@newhouse87)
Reputable Member Member
1546 kWhs
Joined: 2 years ago
Posts: 231
Topic starter 12/04/2023 9:40 am  

so it happened again at 11:30last night, l have attached pics of what was running and temps. Have other pics of other settings

20230411 231937
20230411 231948

but not sure if relevant. 


   
ReplyQuote
 newhouse87
(@newhouse87)
Reputable Member Member
1546 kWhs
Joined: 2 years ago
Posts: 231
Topic starter 12/04/2023 9:43 am  

pics not v clear but if ye have any questions whats what il know. what does sh for compressor and shc for 3  way valve mean?


   
ReplyQuote
 Derek M
(@derek-m)
Illustrious Member Member
15283 kWhs
Veteran Expert
Joined: 4 years ago
Posts: 4429
12/04/2023 9:45 am  

@newhouse87

Please post all information, since it would appear the BUH's were not the cause.


   
👍
1
ReplyQuote
Transparent
 Transparent
(@transparent)
Illustrious Member Moderator
13030 kWhs
Veteran Expert
Joined: 3 years ago
Posts: 2292
12/04/2023 9:51 am  

Given that Daikin are an international company, I think the LCD display isn't using British nomenclature.

I think the 3-way valve reference to SHC is "Space Heating & Cooling".
Ie it's sending the flow to the UFH or Radiators, rather than the Domestic Hot Water route.

Save energy... recycle electrons!


   
ReplyQuote
 newhouse87
(@newhouse87)
Reputable Member Member
1546 kWhs
Joined: 2 years ago
Posts: 231
Topic starter 12/04/2023 10:14 am  
20230411 231959
20230411 231919
20230411 232150
20230411 232225
20230411 232225
20230411 232202
20230411 232240
20230411 232022
20230411 232220
20230411 232252
20230411 232210
20230411 232302

   
ReplyQuote



 newhouse87
(@newhouse87)
Reputable Member Member
1546 kWhs
Joined: 2 years ago
Posts: 231
Topic starter 12/04/2023 10:15 am  

@transparent and now to figure out why, What is that cycling thing ye talk about, presume its not that?


   
ReplyQuote
Transparent
 Transparent
(@transparent)
Illustrious Member Moderator
13030 kWhs
Veteran Expert
Joined: 3 years ago
Posts: 2292
12/04/2023 10:18 am  

I'm not the best person to answer that @newhouse87

I'm not a heat pump specialist.
I work with embedded controllers, sensors, feedback systems and the suchlike.

My understanding of heat pump cycling has come from analysing data retrieved from substation transformers.
So I've understood the need to to reduce on/off cycling, but not from the usual viewpoint!

This post was modified 2 years ago by Transparent

Save energy... recycle electrons!


   
👍
1
ReplyQuote
 Derek M
(@derek-m)
Illustrious Member Member
15283 kWhs
Veteran Expert
Joined: 4 years ago
Posts: 4429
12/04/2023 10:30 am  

@newhouse87

There is nothing shown on the displays supplied that would appear to be using lots of power. What was the power consumption at the time and how is it being measured?


   
ReplyQuote
Page 16 / 21
Forum Jump:
  Previous Topic
Next Topic  
Share:

Join Us!

Heat Pump Dramas?

Thinking about installing a heat pump but unsure where to start? Already have one but it’s not performing as expected? Or are you locked in a frustrating dispute with an installer or manufacturer? We’re here to help.

✅ Pre-Installation Planning
✅ Post-Installation Troubleshooting
✅ Performance Optimisation
✅ Complaint Support (Manufacturer & Installer)

👉 Book a one-to-one consultation now.

Latest Posts

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