Oh … maybe … If you had set max open to 75%
( So closed =0%, opened = 75%)
It for short time override to 100% ?
But if you have 100% setted already … there is not much to do ?
Same here. Today I received 4x Sonoff TRVZB and after installing the 1st ewelink showed me that there is a new firmware 1.4.0. After I installed it, the temp. calibration feature was gone which is quite important feature for me. aftter I installled the 2nd TRVZB I didnt get even the message that there is a new firmware. Seems like the firmware is blocked now. Bad thing is that I cannot go back to the old firmware 1.3.0 
I am confused but can only report all 17 of my TRVZB’s showed update available on HA today (11 Nov) having been caught out a while back with other TRV’s then went in the garbage in the end! So only updated 1 TRVZB today, the states and exposed features all look the same and no sign of new features, I won’t update the others for a while just to be safe but if anyone can add more light please do.
I didn’t check, but z2m downgrade documentation is saying the following:
Using MQTT in HA you can publish:
Topic:
zigbee2mqtt/bridge/request/device/ota_update/check/downgrade
Payload: {“id”: “sonoff_friendly_name”}
Then go to z2m and check OTA under this particular device
I try update 1 TRV …
I dont see any new function, no old function missing…
all other trvs are reporting there is update
@FaneUniv and @huhu: did you update from the ewelink app?
I think the rest of us are using the TRVs via Z2M where the update is still available and the calibration is still there after the upgrade.
but, just as @rasasak mentioned, the new feature is not available.
Can you please add a commet at added-v1.4.0-ota-image-to-TRVZB by 1775939187 · Pull Request #915 · Koenkk/zigbee-OTA · GitHub to flag this.
Hello,
Temperature Calibration and other new features (Boost, …) are back after bridge firmware upgrade. I have ZBridge-U and FW version 1.16.0.
@LittleBro, you are right: Z2M was ok from very beggining, for the ones using eWeLink app it was a confusion due to delay of different upgrades available in a window of 1 day (valves, bridges, app, …). Now is good.
So now the issue is with Z2M that the new option is not visible. I have opened a bug ticket there Sonoff TRVZB does not show new modes added in 1.4.0 · Issue #918 · Koenkk/zigbee-OTA · GitHub
Please comment if you are facing the same.
I can not confirm issues with missing calibration options. Just updated two TRVs without any issue. Using external sensor and as well Home Assistant automation to set TRVs local temperature calibration. Still anything working fine for me. Even with Z2M calibration option is visible and working. Double checked version and informations and both TRVs got latest Firmware 1.4.0 from 20251028. No temperature drops and room temperature in heading mode stable by external temperature sensor. So calibration is no issue in my case with Z2M. Have two hardware revisions of that sonoff trv, latest version 2 and first one. No issues on both.
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Valve Openening and Closing percentages seems buggy or it’s a bad design in 1.4.0.
There is a NEW limitation: the open % must be greater than the closed % but this seems not fitting some needs: for example if you want to open half (50%) and to close completely the valve (100%).
Or if you put both open and close percentages 50% will work in this case?!
Also the sum of open and close percentages must be greater than 100%. But in this constraint you cannot open 30% because you are forced to put close percent 30% (or less), therefore the total does not exceed 100% constraint, so you cannot set this use case.
This is a ewelink limitation? Since nothing changed in Z2M.
I play with the closing degree in my automations and it works as before.
Why there are 3 external sensor buttons ?
This is not a recent change.
The external_2 and external_3 options were added in this pull request by Koenkk as a quick fix for an error: Sonoff TRVZB | z2m: Exception while calling fromZigbee converter: Expected one of: 0, 1, got: '2'} · Issue #27080 · Koenkk/zigbee2mqtt · GitHub
You can find the meaning of these two options here: Sonoff TRVZB: expose external temperature sensor attributes by photomoose · Pull Request #8873 · Koenkk/zigbee-herdsman-converters · GitHub
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You can find the full changelog for Sonoff TRVZB firmware 1.4.0 here:
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I use ZBBridge-P and updated that first yesterday to 2.7.0 and my TRVZB then to 1.4.0. In EweLink the Temperature Calibration feature is still missing. My TRVZBs with 1.3.0 show Temp. Calibration. My first day with SONOFF devices started quite bad. I wont do any firmware upgrades anymore de nce I get this feature back someday.
trvzb_v1.4.1 released?
After updating to version 1.4.1, the TVR got stuck and showed an F5 error. After turning it back on, the temperature sensor in the head probably isn’t working. I need to try resetting it.
I updated one of my 4 TRVs 3 hours ago. And it seems to work fine with default vent config.
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yep, I upgraded all of my TRVs via Z2M, all OK.
