Check the thermistor readings as detailed in the attached video.
If the controller is indicating -39C then check to see if the controller is correctly configured. Also check to see if the thermistor is wired to the correct connection.
@ngillam now you have access to the app at the bottom of the screen is a reports tab then press hourly temperature it will display the flow and return temps for the most recent hour. At the top of the screen will be the time press that and you can select any hour in the last 24 hours so you can see exactly when the heat pump was on and what temp it was running at.
As your system is running off 3rd party thermostats that -39C reading won’t matter it’s the temperature near to the controller unit.
Hello Gary,
Still struggling with this, seems we can't get the house cool enough, won't go below 22degs, if I alter the WC curve to its lowest temp (20degs) then I suffer cycling which I've seen on other threads. It seems the house is really well insulated and we're just not losing the heat, the other half is getting a bit annoyed at the high temps.
Any suggestions?
Thanks,
Neil
At this time of year you will need to use your thermostats to limit overheating. Are they heatmiser as well? Now you have set the warm end of the curve you can set the thermostats to the max temp you want then the heat pump should shut off unless you have multiple zones in the UFH linked to numerous thermostats?
@gary This is my set up, I thought the idea was to let the heatmisers (in each room) run free? Mine are at 35 degs but sit at about 22 degs. my partner wants to open windows to cool the place off but that seems wasteful. All underfloor heating is hard to control.
If you can’t control the house temp through the flow temps you will have to have thermostats to stop the house getting hotter than required.
@gary By flow temps you mean those set via WC curve? Just had a thought, all the trickle vents are closed on the windows!!
I think you said your set up was similar to mine Gary, can I ask your KWH for Oct? heating and DH combined?
Thanks,
Neil.
Yes the flow temps in the WC curve you are running as cool as possible but that is still overheating the house so all you can do is turn it off when the house gets hot enough.
I don’t measure the heat pump consumption separately but I estimate it about 10kwh a day for water and heating in October. This is all done overnight at cheap rate the house doesn’t cool down enough during the day for the heating to come back on again.
Posted by: @ngillamall the trickle vents are closed on the windows!!
Not the best option for ventilation! You will end up with a house that hot and stuffy, the stuffy feeling isn't because it's hot, its rubbish air quality, humidity and high CO2 levels
- 26 Forums
- 2,238 Topics
- 49.8 K Posts
- 82 Online
- 5,900 Members
Join Us!
Podcast Picks
Latest Posts
-
RE: DESNZ doing a survey which asks the right questions!
@jamespa but is MCS capable of knowing the difference b...
By Judith , 4 hours ago
-
RE: Solar inverters - where does the energy go when clipping?
Since the combination of fitting plus scaffolding makes...
By Judith , 4 hours ago
-
RE: Designing my house system with a mix of air to air and air to water
@jamespa Cheers James, it's great reading. In quite a f...
By pipebaron , 4 hours ago
-
RE: PV Panels on roof in Conservation Area
If there is any way you can determine daily oil consump...
By JamesPa , 4 hours ago
-
RE: Octopus Cosy Heat Pump Owners & Discussion Thread
@editor The Good: How efficient have you fou...
By wreckguru , 5 hours ago
-
RE: My experience with 3 heat pump surveys: Heat Geek, British Gas & Octopus
Good plan and pretty much what I did in the end (there ...
By JamesPa , 6 hours ago
-
RE: Grant 13kW Aerona3 - issues getting zones to temp
attached is prelagged in case indicates anything. &nb...
By Crimson , 8 hours ago
-
RE: The Hidden Secret to a Successful Heat Pump: Pipe Size Matters
The more we learn about about an ASHP potentially repla...
By colinc , 8 hours ago
-
RE: Solis S6-EH1P8K-L-PLUS – Why I Chose It and What I’ve Learned So Far
Via the cloud and via the online, similar data is shown...
By Batpred , 11 hours ago
-
@old_scientist yes. No E911 error. Very odd. Thanks for...
By bontwoody , 13 hours ago
-
RE: Incorrect Billing of Customers with a Smart Meter
How odd @korwraith - that functionality being offered ...
By Transparent , 14 hours ago
-
This is what I do, but I have a very simple economy 7 l...
By JamesPa , 17 hours ago
-
RE: Master & Slave Zones/Setback
Re outdoor probes can be added from the ones attached t...
By bretix , 18 hours ago
-
RE: Octopus Cosy & Octopus EV + bidirectional smart tariff, together. What, eh?
Thanks for sharing this, it is clearly disappointing, B...
By Batpred , 1 day ago
-
I'm seriously considering an air to air A2A multi-split...
By springswood , 1 day ago
-
RE: Effect of Mitsu PAR WT60 Wireless Controller
@sunandair We were not present to do a tidy changeover ...
By DavidAlgarve , 1 day ago
-
I’m frankly amazed you think anything I have posted on ...
By Majordennisbloodnok , 1 day ago
-
RE: Replacing knackered oil boiler with Samsung ASHP - Perthshire
Thanks for your full reply @mike-h. It certainly cleare...
By DowallyDrifter , 2 days ago
-
RE: Daikin Octopus installation update - I saw my first defrost. 😍😂
I don't seem to have a mixer valve. Just pressure regul...
By Jancold , 2 days ago








