LTS Temperature of room reporting 0 a few times every day v2

[Chaoscontrol]

As reported a few months ago here: #439
Also related to discussion here: #434

I am observing it happening again.
LTS Temperature of room reporting 0 a few times every day. Climate entity for the room also shows that when looking its history. Just can't show it in the History Explorer.

• It's only one room out of 5 in the home. It's the only one with RoomStat, although I'm not sure how to check if it's related.
• Can't say when it's started again, it's been weeks/months. Just reported it now.
• Same room as last time.
• Both HA and Integration updated.

[Chaoscontrol]

Seems unrelated as times do not match, but I'm also getting plenty of connection errors.

This error originated from a custom integration.

Logger: custom_components.wiser.coordinator
Source: custom_components/wiser/coordinator.py:198
integration: Drayton Wiser Integration for Home Assistant (documentation, issues)
First occurred: 11:33:30 (33 occurrences)
Last logged: 20:19:11

Unknown error fetching wiser (wiser-WiserHeat04B0AC) data. [Errno 104] Connection reset by peer. Please report this error to the integration owner
Unknown error fetching wiser (wiser-WiserHeat04B0AC) data. Response payload is not completed: <TransferEncodingError: 400, message='Not enough data for satisfy transfer length header.'>. Please report this error to the integration owner
Unknown error fetching wiser (wiser-WiserHeat04B0AC) data. Response payload is not completed: <TransferEncodingError: 400, message='Not enough data for satisfy transfer length header.'>. ConnectionResetError(104, 'Connection reset by peer'). Please report this error to the integration owner
Unknown error fetching wiser (wiser-WiserHeat04B0AC) data. Server disconnected. Please report this error to the integration owner

[msp1974]

Does the roomstat have a good signal? Should not be related to hub update issues as it must be reading the tempo from the hub and the hub is showing 0 for some reason.

[Chaoscontrol]

The roomstat is closer to the hub than any of the iTRV of the house. It never moves, and I don't see any other sensor going unavailable.

The roomstat signal sensor says Very good.

[Chaoscontrol]

I can confirm the one at fault is the Roomstat. It happened to run out of battery recently, and I decided to leave it off for a few days and see what happened. Indeed, ever since there hasn't been a single drop to 0.

Still, I don't think it's a matter of signal, since all I see is it having "Very good" and "Good" as I said. It's very close to the Hub.

[msp1974]

So i think this must be caused by your roomstat reporting 0 temp for some reason. I assume (although we know what that did) that if it doesnt report the hub uses the trv temp. However, our code uses the room current temp reported by the hub in both scenarios. I also double checked that if for some reason the room has no current temp parameter in the hub data then it would report 5C not 0C.

Not really sure what i can do to help other than suggest to replace batteries and see what happens or if you have another roomstat, swap them over and see if issue follows it. If so, i think a new one is needed.

[Chaoscontrol]

Will fit new batteries and see. If it still happens, I will try with alkaline batteries and not rechargeable ones, to see if that's what's causing the issue. I've been using rechargeable ones for all iTRVs and Roomstat so far, even when I know it's recommended otherwise.

[msp1974]

Will fit new batteries and see. If it still happens, I will try with alkaline batteries and not rechargeable ones, to see if that's what's causing the issue. I've been using rechargeable ones for all iTRVs and Roomstat so far, even when I know it's recommended otherwise.

Did this resolve the issue?

[Chaoscontrol]

I think it did, for a few days at least. Now I'm noticing drops again. Might try non-rechargeable batteries tbh. They might be causing the issue. Although the connection is not dropping really, so there might be a way to overcome this 0 drops even forcibly.