Help
  • Explore Community Expore Community
  • Get started
  • Ask the Community
  • How-To & Best Practices
  • Contact Support
Login / Register
Brand Logo
Help
  • Explore Community Explore Community
  • Get started
  • Ask the Community
  • How-To & Best Practices
  • Contact Support
close
  • Community Home
  • Forums
    • By Topic
    • By Topic
      EcoStruxure Building
      • Field Devices Forum
      • SmartConnector Forum
      EcoStruxure Power & Grid
      • EcoStruxure Asset Advisor
      • Gateways and Energy Servers
      • Metering & Power Quality
      • Protection & Control
      APC UPS, Critical Power, Cooling and Racks
      • APC UPS Data Center & Enterprise Solutions Forum
      • APC UPS for Home and Office Forum
      EcoStruxure IT
      • EcoStruxure IT forum
      • EcoStruxure IT™ Advisor CFD
      Remote Operations
      • EcoStruxure Geo SCADA Expert Forum
      • Remote Operations Forum
      Industrial Automation
      • Alliance System Integrators Forum
      • AVEVA Plant SCADA Forum
      • CPG Expert Forum DACH
      • EcoStruxure Automation Expert / IEC 61499 Forum
      • Fabrika ve Makina Otomasyonu Çözümleri
      • Harmony Control Customization Forum
      • Industrial Edge Computing Forum
      • Industry Automation and Control Forum
      • Korea Industrial Automation Forum
      • Machine Automation Forum
      • Modicon PAC Forum
      • PLC Club Indonesia
      Schneider Electric Wiser
      • Schneider Electric Wiser Forum
      Power Distribution IEC
      • Eldistribution & Fastighetsautomation
      • Elektrik Tasarım Dağıtım ve Uygulama Çözümleri
      • Paneelbouw & Energie Distributie
      • Power Distribution and Digital
      • Solutions for Motor Management
      Power Distribution NEMA
      • Power Monitoring and Energy Automation NAM
      Power Distribution Software
      • EcoStruxure Power Design Forum
      • LayoutFAST User Group Forum
      Energy & Sustainability Services
      • Green Building Scoring and Certification Forum
      Light and Room Control
      • SpaceLogic C-Bus Forum
      Solutions for your Business
      • Solutions for your Business Forum
      Support
      • Ask the Community
  • Knowledge Center
    • Building Automation Knowledge Base
    • Remote Operations Devices Knowledge Base
    • Geo SCADA Knowledge Base
    • Industrial Automation How-to videos
    • Digital E-books
    • Success Stories Corner
    • EcoStruxure IT Help Center
  • Events & Webinars
    • All Events
    • Innovation Talks
    • Innovation Summit
    • Let's Exchange Series
    • Partner Success
    • Technology Partners
  • Ideas
    • EcoStruxure Building
      • EcoStruxure Building Advisor Ideas
      Remote Operations
      • EcoStruxure Geo SCADA Expert Ideas
      • Remote Operations Devices Ideas
      Industrial Automation
      • Modicon Ideas & new features
  • Blogs
    • By Topic
    • By Topic
      EcoStruxure Power & Grid
      • Backstage Access Resources
      EcoStruxure IT
      • EcoStruxure IT™ Advisor CFD
      Remote Operations
      • Remote Operations Blog
      Industrial Automation
      • Industrie du Futur France
      • Industry 4.0 Blog
      Power Distribution NEMA
      • NEMA Power Foundations Blog
      Energy & Sustainability Services
      • Active Energy Management Blog
      Light and Room Control
      • KNX Blog
      Knowledge Center
      • Digital E-books
      • Geo SCADA Knowledge Base
      • Industrial Automation How-to videos
      • Remote Operations Devices Knowledge Base
      • Success Stories Corner
  • companyImpact

Wiser TRV temperature 'sticks' until restarted

Schneider Electric Wiser Forum

Connect with Wiser Smart Home solution experts in the Schneider Electric Wiser forum. Discuss tips on features, updates, installation, and how to get the most out of your Wiser products.

cancel
Turn on suggestions
Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type.
Showing results for 
Show  only  | Search instead for 
Did you mean: 
  • Home
  • Schneider Electric Community
  • Schneider Electric Wiser
  • Schneider Electric Wiser Forum
  • Wiser TRV temperature 'sticks' until restarted
Options
  • Subscribe to RSS Feed
  • Mark Topic as New
  • Mark Topic as Read
  • Float this Topic for Current User
  • Bookmark
  • Subscribe
  • Mute
  • Printer Friendly Page
Invite a Co-worker
Send a co-worker an invite to the portal.Just enter their email address and we'll connect them to register. After joining, they will belong to the same company.
You have entered an invalid email address. Please re-enter the email address.
This co-worker has already been invited to the Exchange portal. Please invite another co-worker.
Please enter email address
Send Invite Cancel
Invitation Sent
Your invitation was sent.Thanks for sharing Exchange with your co-worker.
Send New Invite Close
Top Experts
User Count
Alfred_SE
Lt. Commander Alfred_SE Lt. Commander
25
PhilHornby
Lt. Commander PhilHornby
12
Schneider_Community_Team
Administrator Schneider_Community_Team Administrator
10
nischaypond
Ensign nischaypond Ensign
5
View All

Invite a Colleague

Found this content useful? Share it with a Colleague!

Invite a Colleague Invite
Back to Schneider Electric Wiser Forum
coffeepowered
coffeepowered
Cadet

Posted: ‎2023-01-13 01:28 AM . Last Modified: ‎2023-01-13 01:36 AM

0 Likes
6
663
  • Mark as New
  • Bookmark
  • Subscribe
  • Mute
  • Subscribe to RSS Feed
  • Permalink
  • Print
  • Email to a Friend
  • Report Inappropriate Content

Link copied. Please paste this link to share this article on your social media post.

Posted: ‎2023-01-13 01:28 AM . Last Modified: ‎2023-01-13 01:36 AM

Wiser TRV temperature 'sticks' until restarted

I've noticed that some of my Wiser TRVs sit just under the setpoint for a long time, sometimes seemingly struggling to hit that last 0.5 degree required to turn off and constantly calling for heat despite the room feeling warmer than I expect it to be. When I restart the TRV by taking the batteries out and recalibrating, the temperature is around 2 degrees higher than before the restart and way above the setpoint. (and may have climbed higher if I had not intervened)

 

For example:

Setpoint 18

TRV temperature 17.5, calling for heat

Take batteries out for ten seconds, replace, hold - symbol for two seconds to rejoin and calibrate

TRV temperature 21.5, stop calling for heat

 

Does anyone know why this might be the case? I'm not sure how often the TRV measures and reports the temperature back to the app but it doesn't feel right.

 

TRV Firmware 000ea64

HubR Firmware 3.10.8

App version 6.1.5 (Build 22)

Labels
  • Labels:
  • Temperature Control
  • Tags:
  • english
Reply

Link copied. Please paste this link to share this article on your social media post.

  • All forum topics
  • Previous Topic
  • Next Topic
Replies 6
PhilHornby
Lt. Commander PhilHornby
Lt. Commander

Posted: ‎2023-01-13 07:42 AM

0 Likes
2
641
  • Mark as New
  • Bookmark
  • Subscribe
  • Mute
  • Subscribe to RSS Feed
  • Permalink
  • Print
  • Email to a Friend
  • Report Inappropriate Content

Link copied. Please paste this link to share this article on your social media post.

Posted: ‎2023-01-13 07:42 AM


@coffeepowered wrote:

I've noticed that some of my Wiser TRVs sit just under the setpoint for a long time, sometimes seemingly struggling to hit that last 0.5 degree required to turn off 


It could be there is an innocent explanation for this (though I have no proof for this)...

 

The 'flame symbol' in the app. seems to indicate that the Setpoint has not yet been reached - but it doesn't necessarily mean that the system is still calling for heat; it shuts off early and expects the room temperature to continue to rise (because of heat still in the radiator). When there is no Roomstat, this algorithm is probably complicated by the corrections that are being made to compensate for the less than ideal positioning of the temperature sensor (next to a radiator).

 

As for the reported temperature  being higher after the battery swap, this might be just due to its temporary re-positioning, or even just your body heat 🤔

 

I think you need Roomstats for the rooms you really care about, preferably situated somewhere close to where you spend your time in the room...



---------------------
3 Channel Hubᴿ, 13xiTRVs, 8xRoomstats and 2xSmartplug/Repeaters. (UK)
Reply

Link copied. Please paste this link to share this article on your social media post.

coffeepowered
coffeepowered
Cadet

Posted: ‎2023-01-13 08:28 AM

In response to PhilHornby
0 Likes
1
638
  • Mark as New
  • Bookmark
  • Subscribe
  • Mute
  • Subscribe to RSS Feed
  • Permalink
  • Print
  • Email to a Friend
  • Report Inappropriate Content

Link copied. Please paste this link to share this article on your social media post.

Posted: ‎2023-01-13 08:28 AM

> The 'flame symbol' in the app. seems to indicate that the Setpoint has not yet been reached - but it doesn't necessarily mean that the system is still calling for heat;

 

I guess that's part of my concern as the room temperature has very obviously risen beyond the setpoint but the TRV sometimes doesn't register it, I've moved my only roomstat into one of the affected rooms to see if this resolves the behaviour, though it doesn't help that adding two devices to one room means you're no longer able to see the individual temperatures for each device.

 

For the other room I noticed this happening, if it happens again I'm going to point a hairdryer at it to see if it registers a change.

 

Body heat won't be an issue, and I'm not removing or moving the device to pop out a battery and replace. I don't want to have to spend yet more money on roomstats just to make the TRVs behave, maybe they're still figuring things out and will settle over time.

Reply

Link copied. Please paste this link to share this article on your social media post.

PhilHornby
Lt. Commander PhilHornby
Lt. Commander

Posted: ‎2023-01-13 09:01 AM . Last Modified: ‎2023-01-13 10:28 AM

In response to coffeepowered
0 Likes
0
632
  • Mark as New
  • Bookmark
  • Subscribe
  • Mute
  • Subscribe to RSS Feed
  • Permalink
  • Print
  • Email to a Friend
  • Report Inappropriate Content

Link copied. Please paste this link to share this article on your social media post.

Posted: ‎2023-01-13 09:01 AM . Last Modified: ‎2023-01-13 10:28 AM


@coffeepowered wrote:

though it doesn't help that adding two devices to one room means you're no longer able to see the individual temperatures for each device.

It is still possible, but only via the (undocumented) API, rather than the app.

 

Body heat won't be an issue, and I'm not removing or moving the device to pop out a battery and replace. I don't want to have to spend yet more money on roomstats just to make the TRVs behave, maybe they're still figuring things out and will settle over time.


Perhaps 'popping the batteries out' resets the compensation algorithm? (With the room cold, there won't be a massive difference between the temperature at the side of the radiator and where you're sitting, but it develops into one as the radiator heats - and has to be allowed for by the system).

 

Even with further development, I'm not convinced they'll ever reach a degree of control that is sufficient for a living space, but I've found them good enough for the Downstairs Loo and such like. There's a nice graph of Roomstat vs two iTRV's (in the same room) in this thread 

 

(I do appreciate that the costs soon mount up - but apparently, Wiser is a cheaper option than competing systems, when 'fully-specced')



---------------------
3 Channel Hubᴿ, 13xiTRVs, 8xRoomstats and 2xSmartplug/Repeaters. (UK)
Reply

Link copied. Please paste this link to share this article on your social media post.

PhilHornby
Lt. Commander PhilHornby
Lt. Commander

Posted: ‎2023-01-13 10:14 AM

0 Likes
0
629
  • Mark as New
  • Bookmark
  • Subscribe
  • Mute
  • Subscribe to RSS Feed
  • Permalink
  • Print
  • Email to a Friend
  • Report Inappropriate Content

Link copied. Please paste this link to share this article on your social media post.

Posted: ‎2023-01-13 10:14 AM


@coffeepowered wrote:

When I restart the TRV by taking the batteries out and recalibrating, the temperature is around 2 degrees higher than before the restart and way above the setpoint.

App version 6.1.5 (Build 22)


I thought I could test my theory (about the algorithm resetting) by taking the batteries out of one of my iTRVs.

 

I'm not sure it's proof of the theory, but I did reproduce what you saw :-

 

BEFORE

 

{
      "id": 8,
      "MountingOrientation": "Vertical",
      "SetPoint": 210,
      "MeasuredTemperature": 217,
      "PercentageDemand": 71,
      "WindowState": "Closed",
      "ExternalRoomStatTemperature": 208
    },

 

AFTER

 

{
      "id": 8,
      "MountingOrientation": "Vertical",
      "SetPoint": 210,
      "MeasuredTemperature": 231,
      "PercentageDemand": 71,
      "WindowState": "Closed",
      "ExternalRoomStatTemperature": 208
    },

 

Temperature reported (via API) changed from 21.7° to 23.1°

Roomstat (and therefore Room) temperature was unchanged at 20.8°

 



---------------------
3 Channel Hubᴿ, 13xiTRVs, 8xRoomstats and 2xSmartplug/Repeaters. (UK)
Reply

Link copied. Please paste this link to share this article on your social media post.

SAtewart
Ensign SAtewart
Ensign

Posted: ‎2023-01-14 04:10 AM

0 Likes
1
602
  • Mark as New
  • Bookmark
  • Subscribe
  • Mute
  • Subscribe to RSS Feed
  • Permalink
  • Print
  • Email to a Friend
  • Report Inappropriate Content

Link copied. Please paste this link to share this article on your social media post.

Posted: ‎2023-01-14 04:10 AM

Are any of these parameters user settable via the API? (I'm attempting to do some  background work on using this and interfacing with Python). PercentageDemand seems to indicate that the TRV can drive from fully closed to fully open in 100 steps. That would be a useful parameter to be able to control. I wonder also if there is a horizontal option for MountingOrientation? that could yield better measurement accuracy perhaps.

Reply

Link copied. Please paste this link to share this article on your social media post.

PhilHornby
Lt. Commander PhilHornby
Lt. Commander

Posted: ‎2023-01-14 09:53 AM

In response to SAtewart
0 Likes
0
592
  • Mark as New
  • Bookmark
  • Subscribe
  • Mute
  • Subscribe to RSS Feed
  • Permalink
  • Print
  • Email to a Friend
  • Report Inappropriate Content

Link copied. Please paste this link to share this article on your social media post.

Posted: ‎2023-01-14 09:53 AM


@SAtewart wrote:

Are any of these parameters user settable via the API?

All I know about the API, is that which was documented originally  and stuff I've reverse-engineered from the App. (no doubt in breach of various licence agreements, that I verbally modified 😉 )

 

If the App can't/doesn't do it, there's no easy way to know if it's possible or not. I've tried some educated guesses, to do things like adding an end-time to a 'Moment' (which failed) and altering Setpoints to a finer granularity than 0.5° (which worked). I think you'd need to capture an image of the firmware to explore deeper (or see if there's a serial debugging interface on the Hubᴿ)

 

PercentageDemand seems to indicate that the TRV can drive from fully closed to fully open in 100 steps. That would be a useful parameter to be able to control.

I don't think it means that, though I see where you're coming from. To achieve 'analogue' control (or at least finer digital control), it would need a detailed knowledge of the flow characteristics of the valve body. (I understand there can be some major differences between them.)

 

I think 'PercentageDemand' probably pertains to the 'pseudo proportional control' that is used to control the Boiler On time (or the real proportional control when Opentherm is available). I could be wrong 🙂

 

I wonder also if there is a horizontal option for MountingOrientation? that could yield better measurement accuracy perhaps.

Yes, it would seem logical that horizontally mounted valves would be less affected by the actual radiator heat - but there doesn't (currently) seem to be any way to tell the system about them. It might just be a future planned enhancement.



---------------------
3 Channel Hubᴿ, 13xiTRVs, 8xRoomstats and 2xSmartplug/Repeaters. (UK)
Reply

Link copied. Please paste this link to share this article on your social media post.

Preview Exit Preview

never-displayed

You must be signed in to add attachments

never-displayed

Additional options
You do not have permission to remove this product association.
 
To The Top!

Forums

  • APC UPS Data Center Backup Solutions
  • EcoStruxure IT
  • EcoStruxure Geo SCADA Expert
  • Metering & Power Quality
  • Schneider Electric Wiser

Knowledge Center

Events & webinars

Ideas

Blogs

Get Started

  • Ask the Community
  • Community Guidelines
  • Community User Guide
  • How-To & Best Practice
  • Experts Leaderboard
  • Contact Support
Brand-Logo
Subscribing is a smart move!
You can subscribe to this forum after you log in or create your free account.
Forum-Icon

Create your free account or log in to subscribe to the forum - and gain access to more than 10,000+ support articles along with insights from experts and peers.

Register today for FREE

Register Now

Already have an account? Login

Terms & Conditions Privacy Notice Change your Cookie Settings © 2023 Schneider Electric, Inc