Smart devices keep going offline

[#1]

I have a Plusnet smart hub 2 and I connected to it 4 x smart radiators which are on the 2.4ghz band. After a week or so after I initially connected them they starting going offline as I got notifications in the smart life app.
After several router resets and having the same issue I bought a WiFi extender which is a single band 2.4ghz one and connected the radiators to that only to find yet again they are going offline.
I moved the WiFi extender (tp link) and it's showing on there app as in the best location for signal strength.
I live in a one bedroom apartment so not a huge place but still had the same issues.
I then tried disabling smart channel selection and set it to channel 11 and no difference.
I've just tried switching to mode 2 and same problem.
It's very frustrating as I don't really know what else to try and can't understand why they keep going offline.
Is it worth turning off 5ghz and seeing if that works? Not keen on that idea as my smart TV and set top box connect to 5ghz.
Would turning off the smart feature on 5ghz help or should I try mode 3 on the router?.
Any help would be appreciated.
I've got a quite simple set up in a small living space but really want to be able to control my radiators via an app.

Thank you in advance.

[#2]

@Simon_James 

A warm welcome to the forums.

• What are the smart radiators?  Have you googled for known issues with them?
• When they "go offline" have you looked in the router network information screens to see if they are still connected?
• How do you get them back online - do you need to do anything to them (as opposed to just restarting the router)?
• Do they power off entirely and thus need to re-establish a router connection?
• Is the app connecting locally or via a cloud based server?
• Do you notice any other connectivity issue at the time they "go offline"?
• Have you tried pinging their IP address for a computer?

You might try assigning to them a static IP address in the router network settings.

[#3]

@Townman 

Thank you for the welcome and for your reply.

I've answered as best I can below.

What are the smart radiators? -  Reina Odet

Have you googled for known issues with them? - Yes and cannot see any reference to any WIFI issues, seem to have positive reviews overall.

When they "go offline" have you looked in the router network information screens to see if they are still connected? - I will check this again when I am next there, however I'm pretty sure when one went offline earlier in the week under my connected devices on 2.4ghz it showed it listed and as disconnected and also shows as disconnected in the TP link app Tether as only 3 devices were online.

How do you get them back online - do you need to do anything to them (as opposed to just restarting the router)? - I switch them off at the mains and start them back up and then go into the smartlife app delete them from there and re-add them one by one.

Do they power off entirely and thus need to re-establish a router connection? - There is a WIFI  signal indicator on the screen of the radiator even when the connection has dropped so suggests it's picking up the WIFI signal but I don't know how to re-establish connection to the router other then switching them off and back on so they go into discovery mode whatever it's called when I press and hold the WIFI button on the radiator and the Smartlife app picks it up and they reconnect.

Is the app connecting locally or via a cloud based server? - Via cloud based server (Smartlife)

Do you notice any other connectivity issue at the time they "go offline"? - Not at all everything works as normal.

Have you tried pinging their IP address for a computer? - I've never done this so unsure on that?.

You might try assigning to them a static IP address in the router network settings. - Happy to try this if I can work out how to do it.

In your opinion once I've got the two back online that are currently showing offline shall I disconnect all 4 from the WIFI extender which is a single band one for 2.4GHZ and reconnect directly to the router and change back to mode 1 before trying to assign them a single IP address?. I did use a WIFI analyser app and that's when i changed smart channel off and put on channel 11 but hasn't made any difference as you know.

Look forward to hearing from you.

[#4]

Doing a Google search for "reina odet connection issues" delivers a few hints at known issues.  AThe Ai summery is not great and with a quick look, I have not found the original source...

----------------------------------------------------

If your Reina Odet radiator is experiencing WiFi connection issues, begin by performing basic checks of your equipment and home network. The radiator can be connected using either "SC" (SmartConfig) or "AP" (Access Point) mode; if the first method fails, try the second. 

Initial checks

• Power cycle your equipment: Unplug the radiator, wait at least 30 seconds, then plug it back in. You should also reboot your home's internet router.
• Verify your home WiFi: Ensure your router is broadcasting a 2.4 GHz WiFi signal. Many smart devices, including the Reina Odet, do not support the newer 5 GHz band. You can check your router's user manual for instructions.
• Check signal strength: The radiator must be close enough to your router to receive a strong WiFi signal. Interference from physical objects like thick walls can weaken the signal. Consider moving the radiator closer temporarily or installing a WiFi booster to extend your signal's range. 

Reconnecting via the app

The Reina Odet uses a smart home app such as the Tuya Smart or Smart Life app to connect. 

1. Open the app and select the option to "Add Device".
2. On the radiator, press the WiFi button. The display should show "SC" (or "EZ" mode) and the WiFi light will flash.
3. Follow the in-app instructions to add the new device. 

Using AP mode

If the standard method fails, switch to Access Point (AP) mode. 

1. Press and hold the WiFi button on the radiator for three seconds until the WiFi light begins to flash. The display should show "AP."
2. In the Tuya Smart or Smart Life app, follow the instructions for adding a new device via AP mode.
3. The app will instruct you to connect your phone's WiFi directly to the radiator's hotspot. Follow the prompts in the app to complete the connection. 

Additional troubleshooting

• App settings: Make sure that both Bluetooth and WiFi are enabled on your smartphone before you begin the pairing process.
• Router channel conflicts: The radiator may be unable to connect if your router is using a WiFi channel that conflicts with the radiator's signal. You can try changing your router's WiFi channel via its settings.
• Factory reset: If the radiator was previously paired with a different network, you may need to perform a factory reset. The specific process is not in the manual but is a common fix for smart devices. Try holding down the WiFi button or a combination of buttons for an extended period to reset it.
• Contact support: If all else fails, reach out to the retailer you purchased the radiator from or contact Reina customer support. 

--------------------------------------------

From the above, I suggest...

1. Simplify your set up as much as possible to establish a working network...
   1. Ditch the extender
   2. Disable the 5GHz band
   3. Set mode 1
2. Do a factory reset on the heaters (consult the manual or do more searches)
3. Attempt SC/EZ mode configuration - it that does not work, try AP mode

Do you know the WiFi specification of these devices?

To fix the IP addresses in the router, go to advance settings, my network.  Then open each device and set Always use this IP address to YES.

[#5]

Thank you for the below, that's really helpful and I'll work through all your suggestions.

Hoping it resolves the issues i'm having with them, I've also checked in the manual and it does state how to do a reset so i'll try that as well.

I don't know the WiFi specification of them only that they operate on 2.4GHz band but i'll turn on 5GHz as you suggested.

I'm assuming my TV which uses Freely over the internet rather than an aerial will still be ok on 2.4GHz?.

I really need these radiators working so no problem just using 2,4GHz and lastly i'll fix the IP addresses.

Will let you know how it goes.

[#6]

After these are working properly on 2.4GHz you can try switching on the 5GHz again.

[#7]

Just a quick update, I've done everything you suggested and still unsure whether these radiators are going to hold a connection.
One dropped offline again but I reset it again and reconnected it using SC although one of them I had to use AP so see how it goes.
I've manually set the router to channel 6 so not using smart settings and 5,GHz is off and it's on mode 1.
I factory reset all the radiators before I started and the router as well and I've ditched the extender.
The always use this IP address setting was already set to yes so left that as it is.
I'm not technical enough to understand this but there is a log on the router and I've copied the notes from when I think one of them went offline if this means anything?.


19:21:56, 01 Nov.2.4G client Mac: 38:2C:E5:83:ED:D6 Deauthentications (Reason:Disassociated due to inactivity )
19:21:04, 01 Nov.DHCP device Disconnected: 192.168.1.101, 38:2c:e5:83:ed:d6, unknown

[#8]

That is “interesting” though I’ve no idea about the implications - it suggests that the radiator is not generating traffic so gets dropped.

[#9]

If a client wireless device goes into 'sleep' mode then it could disassociate. (The 'sleep' mode could be where the wireless connection is being supported by battery, and the client enters 'sleep' mode to preserve battery).

I could be talking utter trash, tho.

[#10]

I'll just have to see how it goes, worse case scenario I'll just have to use them without that wireless function and app control which would be a shame.
I'm not sure what else I can try.
Unless there are settings in the router that I can try that I don't know about.
I don't want to mess anything up though so not touched anything else.

[#11]

Afternoon,
Well I've been out this morning and just come back and one of the radiators has dropped connection again.
This is the log from the router if this means anything?!.

12:24:53, 02 Nov.DHCP device Disconnected: 192.168.1.153, 38:2c:e5:83:ef:a8, unknown
12:24:53, 02 Nov.LAN [DEL] ARP 192.168.1.153 with 38:2c:e5:83:ef:a8 from br0
12:24:49, 02 Nov.ARP [del] br0 192.168.1.153 38:2c:e5:83:ef:a8

I don't know what I can do know really unless you or anyone has any ideas?.
Appreciate the help on this.🙂

[#12]

Hi Simon,

Here's an off the wall idea ... increase the lease duration on the Advance Settings -> My Network -> IPv4 Configuration page.

The default setting is one day; the device should attempt renewal on the half life (12 hours).  I am wondering if it fails to do that, is the router dropping the lease?

So two suggestions - one or the other...

• Assign static IP addresses to the radiators
• Increase the lease duration

My logic here was to avoid the need to renew the lease with a static assignment or to remove the need to renew it within a window for which the radiator did not need to communicate.  One is clutching at straws.  You are close to needing a wireshark trace to see what is actually happening on the network.

HOWEVER, as a point of reference, I went and reviewed my network configuration for my mail laptop...

   IPv4 Address. . . . . . . . . . . : 192.168.1.34(Preferred)
   Subnet Mask . . . . . . . . . . . : 255.255.255.0
   Lease Obtained. . . . . . . . . . : 26 October 2025 02:32:02
   Lease Expires . . . . . . . . . . : 03 November 2025 10:12:07

Lease time: 1 Day(s) 0 Hour(s)
Valid leases are between 1 hour and 21 day

And I thought that this device has a static IP address allocation ... apparently it does not!!

I am thereby confused by the ipconfig report ... unless "Lease Obtained" means when it was first obtained and the expiry is that of the last (but not recorded) renewal.  I will try to remember to recheck later tonight and tomorrow morning: if this is reporting the extension, then the half life is 22:12:07 this evening at which point it should renew for 24 hours.

You might need to contact the heater manufacturer.

@bobpullen - do you have any info on what the log messages reported by the OP signify please?

[#13]

Thank you for your message, I'll have to have a look at this again when I'm back there later in the week.
In regard to static IP addresses how would I do that? I did notice yesterday when I was in the settings and it said DHCP or something but even when I went in with my admin password couldn't see an option to change that I presume to a static IP.
It's like the setting for always use this IP address it's defaulted to yes and no option to change it even when I go in as admin.
Happy to try anything at this stage and I remember seeing the lease page so what can I increase that to if I increase it?.
Would a static IP be the better option that's if it gives me the option!.
I can email the manufacturer for advice as well and see what they say about them going offline.
Very little information in the manual nothing on WiFi spec or anything like troubleshooting.

[#14]

@Simon_James 

Can you share the event log from this Hub, it would be interesting to see the behaviour of the wireless connection for this device.

Use the paper clip below the reply window

[#15]

You need to select the individual device from the My Devices or Address Table screens.  "Always use this address" is the same as setting a DHCP managed static address.

The lease can be whatever you want to try up to 21 days.  Try 7 and see if it makes a difference.

The address table page lists the devices the router knows about, their connection status and the residual lease time.