Problems with Daikin 18 kW High Temp ASHP
@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?
@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?
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.
@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.
- 24 Forums
- 1,416 Topics
- 29.8 K Posts
- 51 Online
- 1,203 Members
Join Us!
Latest Posts
-
RE: Gas Combi to ASHP - Making sense of survey results and proposal.
@irmartini Hello Ian, I wonder if your house is really ...
By JEH , 2 hours ago
-
RE: Advice on potential HW Cylinder size
As Toodles stated, MCS state a minimum capacity of DHW ...
By Derek M , 2 hours ago
-
RE: SCOP and seasonal variations
@derek-m I think a few questions to Homely are in order...
By Toodles , 2 hours ago
-
@hubb84 No experience here I’m afraid, but I think your...
By Toodles , 2 hours ago
-
RE: Samsung ASHP scheduling help
@morh Your post was music to my ears! I am getting a ...
By Elgreco69 , 2 hours ago
-
RE: Issues with Vaillant connectivity via the MyCONNECT gateway
@drew-pa I have given up on the app - right now it is s...
By dr_dongle , 3 hours ago
-
RE: Optimising Energy Efficiency in Rural Aberdeenshire - GSHP vs. ASHP
@transparent Good points! Do you know if because of ...
By bontwoody , 4 hours ago
-
RE: ASHP Advice: High Temperature vs. Low Temperature Heat Pump For Microbore
Hi - we have a Daikin 16kW HT ASHP installed which was ...
By Marzipan71 , 8 hours ago
-
RE: New Fogstar 15.5kWh upright solution
I'm sorry to hear this is the case. This is not th...
By ChickenBig , 11 hours ago
-
RE: Question about Ecodan's Room Autoadapt mode
@gary Thanks. I'm emboldened to give it a go!
By afarmery , 23 hours ago
-
RE: My ASHP is not performing as well as I’d hoped: COP just over 2
@toodles No. But I wasn't forced there either and The K...
By Morgan , 1 day ago
-
RE: Viessmann Vitocal 250-A in the UK
We have a 10Kw Viessmann 200A it SCOP is currently 5.2,...
By MikeF , 1 day ago
-
RE: Jokes and fun posts about heat pumps and renewables
Recent advances in AI are stunning. I enabled 'facial...
By Transparent , 1 day ago
-
RE: Maximising Savings: Navigating My First Year with Octopus Energy and Heat Pump Running Costs
@allyfish Having been on Agile tariff again for several...
By Toodles , 2 days ago
-
RE: Say hello and introduce yourself
@dr_dongle Living as we do on a hill, one side of our p...
By Toodles , 2 days ago
-
RE: Fossil Fuel Fired Heating v Heat Pump?
Another aspect was the DHW heating; the coal fire in th...
By Toodles , 2 days ago
-
In an ideal world a heat pump unit would contain two co...
By Derek M , 3 days ago
-
RE: Installing your own ASHP - DIY
@tomasmcguinness Have you been able to perform any sani...
By IanMK13 , 3 days ago
-
RE: Vaillant Arotherm Settings for New Installation
@drew-pa Ah thanks. Good to know I dont have a misconce...
By bontwoody , 3 days ago
-
RE: Aira Heat Pump: Stylish Scandinavian Heating
On the whole marketing claims vs reality on performance...
By GunboatDiplomat , 3 days ago
Latest Topics
-
Advice on potential HW Cylinder size
By JWilliams89 5 hours ago
-
By Graeme 1 day ago
-
Interesting heat pumps installations
By Mars 4 days ago
-
What is Wrong with our Heat Pump Installation?
By Mars 5 days ago
-
Fossil Fuel Fired Heating v Heat Pump?
By Toodles 5 days ago