Ecodan Auto Adapt Questions
@boycey If I remember correctly, when the engineer fitted the replacement thermostat, the cable wasn't very long.
Yes, my thermostat is in the same position as yours; on the back, top right from the front.
As Mitsubishi are going to send an engineer, I don't think I should try repositioning at this stage.
Thinking about this a bit more, the excess reading is when it's sunny but the thermostat, being behind the pump, is not necessarily in the sun. It is for a while though when the sun is low at this time of year.
My original thought was that it was reflected heat from the house brickwork behind the pump. You can really feel the heat from the brickwork in the summer.
It's currently 39cm from the back wall so well within the 30cm that mitsubishi specify.
Install 13 April 2024 - 4 Bedroom Brick Detached - Heat Loss 9,281w, Design 45c at -2 - Ecodan 11.2kw R32 - 25L Buffer - 250L Telford Tempest HP DHW - All 16 radiators replaced - Auto Adapt - Octopus Fixed Rate
Posted by: @richard24738As Mitsubishi are going to send an engineer, I don't think I should try repositioning at this stage.
Thats good news
Posted by: @richard24738My original thought was that it was reflected heat from the house brickwork behind the pump. You can really feel the heat from the brickwork in the summer.
It's currently 39cm from the back wall so well within the 30cm that mitsubishi specify.
Hopefully your obs today will clarify whats going on so you can tell the Mitsi engineer!
The reflected heat from my south facing white wall has definitely not subsided 30cm from the wall.
Silly design, which obviously they know as they modified it for the R290
4kW peak of solar PV since 2011; EV and a 1930s house which has been partially renovated to improve its efficiency. 7kW Vaillant heat pump.
@jamespa Extending the cable is not something I would like to attempt especially as Mitsi have agreed to send an engineer. Perhaps he will do it.
It's quite sunny now but cold. If the temperature rises, I'll try shading the unit.
Install 13 April 2024 - 4 Bedroom Brick Detached - Heat Loss 9,281w, Design 45c at -2 - Ecodan 11.2kw R32 - 25L Buffer - 250L Telford Tempest HP DHW - All 16 radiators replaced - Auto Adapt - Octopus Fixed Rate
13:51 - Pump is "idle"
Temperature in the shade at the side of the house 14c.
Outdoor temperature reading of the heat pump 21c.
The top of the pump is shaded with an umbrella.
I have placed a normal thermometer on the back of the heat pump at the top and it reads 21c so that means the Mitsi outdoor thermostat is reading correctly.
Placing my thermostat near the bottom of the heat pump close to the cooler side of the house reads 18c.
Unfortunately, it looks like a sun and shade issue.
@jamespa: you mention a change on the R290. I can't find any documentation. Do they now do wifi remote or is it simply a positional change?
Install 13 April 2024 - 4 Bedroom Brick Detached - Heat Loss 9,281w, Design 45c at -2 - Ecodan 11.2kw R32 - 25L Buffer - 250L Telford Tempest HP DHW - All 16 radiators replaced - Auto Adapt - Octopus Fixed Rate
Posted by: @richard24738@jamespa: you mention a change on the R290. I can't find any documentation. Do they now do wifi remote or is it simply a positional change?
It wasnt me that mentioned this, was someone else, I was only repeating what appeared to be a very plausible statement.
Posted by: @richard24738Unfortunately, it looks like a sun and shade issue.
Yup. Well at least you can tell the Mitsubishi engineer what problem he has to fix. He may of course simply turn up with a sensor on a longer wire.
4kW peak of solar PV since 2011; EV and a 1930s house which has been partially renovated to improve its efficiency. 7kW Vaillant heat pump.
@jamespa Well, I am not alone. Someone on the "Heat Geeks Heating Help For Home Owners" Facebook forum has posted exactly the same problem.
Sounds like a thermostat and a long wire will be the solution. Shame they don't do a wifi solution. It would make positioning so much easier.
Install 13 April 2024 - 4 Bedroom Brick Detached - Heat Loss 9,281w, Design 45c at -2 - Ecodan 11.2kw R32 - 25L Buffer - 250L Telford Tempest HP DHW - All 16 radiators replaced - Auto Adapt - Octopus Fixed Rate
@richard24738 just add a length of wire to exsistng one? Would that work, I think it's just transferring the signal from the end sensor. Might be worth a try, can always reconnect without the extra bit of wire if it doesn't work. Until you get another longer one
@boycey Think I'll wait to see what Misti come up with.
It would be nice to hear from someone who has relocated the Ecodan thermostat. Hopefully someone will see this.
Install 13 April 2024 - 4 Bedroom Brick Detached - Heat Loss 9,281w, Design 45c at -2 - Ecodan 11.2kw R32 - 25L Buffer - 250L Telford Tempest HP DHW - All 16 radiators replaced - Auto Adapt - Octopus Fixed Rate
- 21 Forums
- 1,985 Topics
- 43.3 K Posts
- 38 Online
- 2,311 Members
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)
Latest Posts
-
RE: Plug and play solar. Thoughts?
@editor Thanks. 3-4kw will heat a 200litre water tank w...
By Lucia , 5 minutes ago
-
RE: Is it worth siting panels on an East facing roof?
@carpenterstation, adding panels to your east-facing ro...
By Mars , 5 minutes ago
-
RE: Additional Battery v Wind Turbine v Ripple
@toodles am I wrong in thinking that you guys had gone ...
By Mars , 11 minutes ago
-
RE: Volumisers in Heat Pump Systems: Does Placement Matter?
@gary I'll try and help, but at the moment I'm not rea...
By BobTSkutter , 4 hours ago
-
RE: The EPC Dilemma: How Current Ratings Fail Heat Pumps
I've commented earlier in this thread, finding the same...
By Mike Patrick , 5 hours ago
-
RE: To relocate or add extra PV panels..advice required
It looks normal up to 10:30!
By Judith , 5 hours ago
-
RE: Ecodan Auto Adapt Questions
@boycey Think I'll wait to see what Misti come up with....
By Richard24738 , 6 hours ago
-
RE: SolarPV tables / online calculator
This guy did a good analysis in summary go down a...
By Judith , 6 hours ago
-
RE: ASHP Ecodan L9 error - No Heating but Hot Water
@dnagre delayed reply! It worked again for a bit but ha...
By Phoenix15 , 9 hours ago
-
RE: Vaillant Arotherm Plus - new build no heating, no radiator
@john1756 did you ever get to the bottom of this?
By Mars , 11 hours ago
-
RE: Aira Heat Pump: Stylish Scandinavian Heating
We tested the away mode for the first time as we were a...
By ChandyKris , 13 hours ago
-
RE: Confused about Samsung Gen6 Hot Water Controller
Found a copy on this really good website 🤣 ...
By DerekDeLeon , 14 hours ago
-
RE: Smart TRV experiences (ideally integrating with Midea heat pump)
@madbilly - I think you may risk over-complicating this...
By cathodeRay , 15 hours ago
-
RE: Nibe F2040 ASHP PCB failure
@editor that is awesome! Your help is much appreciated.
By Delta , 1 day ago
-
RE: Are MCS are finally improving (some of) their guidelines?
Encouragement of installers to take account of the emit...
By JohnR , 1 day ago
-
In our case the pipe run for the heat pump is short and...
By madbilly , 1 day ago
-
@toodles no, unfortunately we don’t have access to the ...
By Simon and Zoe , 1 day ago
-
@sandman1600 What I mean is, your UFH power is 79wm2...
By davidnolan22 , 1 day ago
-
RE: Vaillant AroTherm Plus 7kW
Thank you James for such a complete write up. We also h...
By Judith , 1 day ago
Latest Topics
-
To relocate or add extra PV panels..advice required
By WesleyP1874 11 hours ago
-
Is it worth siting panels on an East facing roof?
By Carpenterstation 12 hours ago
-
Plug and play solar. Thoughts?
By Lucia 1 day ago
-
By JamesPa 1 day ago
-
Vaillant water pressure gauge vs Analogue gauge
By jeegnesh 1 day ago
-
Database of heat pump performance data?
By madbilly 2 days ago
-
By madbilly 2 days ago
-
Confused about Samsung Gen6 Hot Water Controller
By ntruby 3 days ago
-
help with new bathroom and towel radiator
By AdamK 3 days ago