Forums

Forums
Renewable Heating
Air Source Heat Pum...
Problems with Daiki...
 
Notifications
Clear all

Problems with Daikin 18 kW High Temp ASHP

 
Page 5 / 5
Air Source Heat Pumps (ASHPs)
Last Post by Bramshot 1 year ago
54 Posts
11 Users
6 Reactions
9,615 Views
RSS
 Bramshot
(@bramshot)
Eminent Member Member
Joined: 3 years ago
Posts: 17
Topic starter 10/04/2024 5:30 pm  

@haggistrap Mine is ok until ambient gets down nearer freezing, say sub 4 degrees. Be interesting to hear how yours performs with a full charge of refrigerant but I suppose we will have to wait until next winter to find out now! I wonder if they will put it out as something that should be checked on all units?


   
ReplyQuote
 HCas
(@hcas)
Reputable Member Member
Joined: 1 year ago
Posts: 101
11/04/2024 3:05 pm  

@bramshot Interesting work-around you created with Hive, smart!! It still remains an on/off control, but you've essentially reduced the number of on/off cycles.   

Did you also set a schedule in Hive?

Are you using the smart TRVs, or just the thermostat?

CEO and co-founder at HavenWise


   
ReplyQuote
 Bramshot
(@bramshot)
Eminent Member Member
Joined: 3 years ago
Posts: 17
Topic starter 11/04/2024 6:00 pm  

@hcas I use schedules both with the wall stat and TRVs.


   
👍
1
ReplyQuote



 HCas
(@hcas)
Reputable Member Member
Joined: 1 year ago
Posts: 101
12/04/2024 9:40 am  

@bramshot Interesting! Do you know what COP you get?
I'd imagine you prioritise control over minimal cost then?

CEO and co-founder at HavenWise


   
ReplyQuote
 Terry Nolan
(@haggistrap)
Eminent Member Member
Joined: 1 year ago
Posts: 15
12/04/2024 9:51 am  

Just curious on COP.  Mine is sitting around 3.3 -3.5 with outside temp 8 to 10c.  Don’t want to get in to mine is better than yours but I think that’s about standard, or rather it looks acceptable.  

I just leave my hive On, I.e. it’s just an easy way to zone / schedual heating on/ off.  TRVs set to max mostly through house, with bedroom ones limited to around 19 20c.

set ASHP to weather compensation mode now.

if any one interested, the gas report from engineer came back.  It was missing 840g of R32 gas.  Now it’s back to 4.2kg of r32.  Time will tell if it helps.


   
ReplyQuote
 Bramshot
(@bramshot)
Eminent Member Member
Joined: 3 years ago
Posts: 17
Topic starter 12/04/2024 11:36 am  

@haggistrap I have no idea what the COP is mine does not tell me anywhere.

The HP is effectively on most of the time. I only use Heat on Demand for a couple of the TRVs, the ones with the Highest demand. The room stat schedule is mainly used for part of the day where I want to make sure the heating is on to get a boost during my off peak electricity period ( 00:30 to 04:30) when hot water has done for the day, so there is no heating required for a while and my battery lasts a bit longer in the on peak time.


   
ReplyQuote
Page 5 / 5
Forum Jump:
  Previous Topic
Next Topic  
Share:

Join Us!

RHH Awards

👉 Vote for “Heat Pump of the Year”

👉 Vote for “Best Manufacturer Customer Support”

👉 Nominate “Heat Pump Installation of Year”, “Best New Tech or Innovation” or “Turkey of the Year” here!

Latest Posts

Members Online