Threshold sensors keep switching to "unknown" intermittently

florianmulatz · March 3, 2025, 5:09am

Hi everyone,

I’m having an issue with my threshold sensors in Home Assistant and hope someone can help me out. The problem occurs with all four of my threshold sensors.

The Problem:
My threshold sensors don’t maintain their “On/Off” status correctly and intermittently switch to “unknown”. Here’s an example from the history of one sensor:

That’s the configuration of the sensor:

What I’ve Checked So Far:

I verified the status of the source sensor, which reliably reports its value every 10 seconds - see screenshot:

Question:
Does anyone have an idea what could be causing this? Why do the sensors keep switching to “unknown”? I’m not sure where to start troubleshooting this issue. Any suggestions or guidance would be greatly appreciated!

Thanks in advance for your help!

florianmulatz · March 3, 2025, 6:22am

PS: I tried configuring another threshold sensor with a energy-source which is not Tasmota-based - this one is working flawlessly.

It looks like this issue comes with a tasmota power-sensor. Any idea?

Cheers mate

mekaneck · March 3, 2025, 7:24am

Look at the logbook entries for the sensor instead of the history graph. Does it show the sensor reporting ‘unknown’?

florianmulatz · March 3, 2025, 8:41am

I can not select this sensor in Logbook - anyhow I think I’m coming closer to the “real-problem” →

I need to check whats up with the nous plug.

ps: all of my tasmota plugs having the same problem - didn’t recognize that … maybe a firmware-issue. I’ll do a fw-upgrade first to check on that …

florianmulatz · March 3, 2025, 11:29am

looks like a problem related to tasmota firmware not to homeassistant. Opened a Issue in GitHUB:

github.com/arendst/Tasmota

Smart Plug (Nous A1T) with Tasmota restarts every 20 minutes due to exception

opened 11:27AM - 03 Mar 25 UTC

closed 09:45PM - 03 Mar 25 UTC

florianmulatz

### PROBLEM DESCRIPTION My Nous A1T smart plug, running Tasmota, restarts every …20 minutes due to an exception. This issue is causing my threshold sensors in Home Assistant to intermittently switch to "unknown" because the source sensor (connected to the smart plug) becomes unavailable during the restart. ### REQUESTED INFORMATION _Make sure your have performed every step and checked the applicable boxes before submitting your issue. Thank you!_ - [X] Read the [Contributing Guide and Policy](https://github.com/arendst/Tasmota/blob/development/CONTRIBUTING.md) and [the Code of Conduct](https://github.com/arendst/Tasmota/blob/development/CODE_OF_CONDUCT.md) - [X] Searched the problem in [issues](https://github.com/arendst/Tasmota/issues) - [X] Searched the problem in [discussions](https://github.com/arendst/Tasmota/discussions) - [X] Searched the problem in the [docs](https://tasmota.github.io/docs/FAQ) - [X] Searched the problem in the [chat](https://discord.gg/Ks2Kzd4) - [X] Problem is not scripter related, in this case open a discussion and tag gemu2015 - [X] Device used (e.g., Sonoff Basic): Nous A1T Smart Plug - [ ] Tasmota binary firmware version number used: 14.5.0 - [X] Pre-compiled - [ ] Self-compiled - [X] Flashing tools used: OTA - [ ] Provide the output of command: `Backlog Template; Module; GPIO 255`: ```lua Configuration output here: 12:26:29.084 CMD: Backlog Template; Module; GPIO 255 12:26:29.086 SRC: WebConsole from 192.168.100.61 12:26:29.090 CMD: Grp 0, Cmd 'BACKLOG', Idx 1, Len 26, Pld -99, Data 'Template; Module; GPIO 255' 12:26:29.166 SRC: Backlog 12:26:29.169 CMD: Grp 0, Cmd 'TEMPLATE', Idx 1, Len 0, Pld -99, Data '' 12:26:29.175 MQT: stat/tasmota_83522B/RESULT = {"NAME":"NOUS A1T","GPIO":[32,0,0,0,2720,2656,0,0,2624,320,224,0,0,0],"FLAG":0,"BASE":49} 12:26:29.381 SRC: Backlog 12:26:29.384 CMD: Grp 0, Cmd 'MODULE', Idx 1, Len 0, Pld -99, Data '' 12:26:29.389 MQT: stat/tasmota_83522B/RESULT = {"Module":{"0":"NOUS A1T"}} 12:26:29.633 SRC: Backlog 12:26:29.637 CMD: Grp 0, Cmd 'GPIO', Idx 1, Len 3, Pld 255, Data '255' 12:26:29.647 MQT: stat/tasmota_83522B/RESULT = {"GPIO0":{"32":"Button1"},"GPIO1":{"0":"None"},"GPIO2":{"0":"None"},"GPIO3":{"0":"None"},"GPIO4":{"2720":"BL0937 CF"},"GPIO5":{"2656":"HLWBL CF1"},"GPIO9":{"0":"None"},"GPIO10":{"0":"None"},"GPIO12":{"2624":"HLWBL SEL_i"},"GPIO13":{"320":"Led_i1"},"GPIO14":{"224":"Relay1"},"GPIO15":{"0":"None"},"GPIO16":{"0":"None"},"GPIO17":{"0":"None"}} 12:26:33.826 WIF: Checking connection... 12:26:35.221 MQT: tele/tasmota_83522B/STATE = {"Time":"2025-03-03T12:26:35","Uptime":"0T00:09:46","UptimeSec":586,"Heap":23,"SleepMode":"Dynamic","Sleep":50,"LoadAvg":19,"MqttCount":1,"POWER":"OFF","Wifi":{"AP":1,"SSId":"WIFI@HOME","BSSId":"44:D9:E7:F7:5D:9A","Channel":11,"Mode":"11n","RSSI":92,"Signal":-54,"LinkCount":1,"Downtime":"0T00:00:04"}} 12:26:35.252 MQT: tele/tasmota_83522B/SENSOR = {"Time":"2025-03-03T12:26:35","ENERGY":{"TotalStartTime":"2024-01-02T14:13:11","Total":105.563,"Yesterday":0.000,"Today":0.000,"Period":0.00,"Power":0.00,"ApparentPower":0.00,"ReactivePower":0.00,"Factor":0.00,"Voltage":0.00,"Current":0.000}} 12:26:45.201 MQT: tele/tasmota_83522B/STATE = {"Time":"2025-03-03T12:26:45","Uptime":"0T00:09:56","UptimeSec":596,"Heap":23,"SleepMode":"Dynamic","Sleep":50,"LoadAvg":19,"MqttCount":1,"POWER":"OFF","Wifi":{"AP":1,"SSId":"WIFI@HOME","BSSId":"44:D9:E7:F7:5D:9A","Channel":11,"Mode":"11n","RSSI":94,"Signal":-53,"LinkCount":1,"Downtime":"0T00:00:04"}} 12:26:45.233 MQT: tele/tasmota_83522B/SENSOR = {"Time":"2025-03-03T12:26:45","ENERGY":{"TotalStartTime":"2024-01-02T14:13:11","Total":105.563,"Yesterday":0.000,"Today":0.000,"Period":0.00,"Power":0.00,"ApparentPower":0.00,"ReactivePower":0.00,"Factor":0.00,"Voltage":0.00,"Current":0.000}} 12:26:49.227 WIF: Sending Gratuitous ARP ``` - [ ] If using rules, provide the output of this command: `Backlog Rule1; Rule2; Rule3`: ```lua Rules output here: 12:21:48.330 CMD: Backlog Rule1; Rule2; Rule3 12:21:48.332 SRC: WebConsole from 192.168.100.61 12:21:48.336 CMD: Grp 0, Cmd 'BACKLOG', Idx 1, Len 19, Pld -99, Data 'Rule1; Rule2; Rule3' 12:21:48.410 SRC: Backlog 12:21:48.413 CMD: Grp 0, Cmd 'RULE', Idx 1, Len 0, Pld -99, Data '' 12:21:48.419 MQT: stat/tasmota_83522B/RESULT = {"Rule1":{"State":"OFF","Once":"OFF","StopOnError":"OFF","Length":0,"Free":511,"Rules":""}} 12:21:48.626 SRC: Backlog 12:21:48.629 CMD: Grp 0, Cmd 'RULE', Idx 2, Len 0, Pld -99, Data '' 12:21:48.636 MQT: stat/tasmota_83522B/RESULT = {"Rule2":{"State":"OFF","Once":"OFF","StopOnError":"OFF","Length":0,"Free":511,"Rules":""}} 12:21:48.876 SRC: Backlog 12:21:48.879 CMD: Grp 0, Cmd 'RULE', Idx 3, Len 0, Pld -99, Data '' 12:21:48.887 MQT: stat/tasmota_83522B/RESULT = {"Rule3":{"State":"OFF","Once":"OFF","StopOnError":"OFF","Length":0,"Free":511,"Rules":""}} 12:21:49.227 WIF: Sending Gratuitous ARP ``` - [ ] Provide the output of this command: `Status 0`: ```lua STATUS 0 output here: 12:19:39.469 CMD: STATUS 0 12:19:39.471 SRC: WebConsole from 192.168.100.61 12:19:39.474 CMD: Grp 0, Cmd 'STATUS', Idx 1, Len 2, Pld 0, Data '0 ' 12:19:39.482 MQT: stat/tasmota_83522B/STATUS = {"Status":{"Module":0,"DeviceName":"tasmota_nousa1t_5","FriendlyName":["tasmota_nousa1t_5"],"Topic":"tasmota_83522B","ButtonTopic":"0","Power":"0","PowerLock":"0","PowerOnState":3,"LedState":0,"LedMask":"FFFF","SaveData":1,"SaveState":1,"SwitchTopic":"0","SwitchMode":[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],"ButtonRetain":0,"SwitchRetain":0,"SensorRetain":0,"PowerRetain":0,"InfoRetain":0,"StateRetain":0,"StatusRetain":0}} 12:19:39.522 MQT: stat/tasmota_83522B/STATUS1 = {"StatusPRM":{"Baudrate":115200,"SerialConfig":"8N1","GroupTopic":"tasmotas","OtaUrl":"http://ota.tasmota.com/tasmota/release/tasmota.bin.gz","RestartReason":"Software/System restart","Uptime":"0T00:02:50","StartupUTC":"2025-03-03T11:16:49","Sleep":50,"CfgHolder":4617,"BootCount":1780,"BCResetTime":"2024-01-02T14:13:11","SaveCount":2849,"SaveAddress":"F9000"}} 12:19:39.560 MQT: stat/tasmota_83522B/STATUS2 = {"StatusFWR":{"Version":"14.5.0(release-tasmota)","BuildDateTime":"2025-02-18T14:34:10","Boot":31,"Core":"2_7_8","SDK":"2.2.2-dev(38a443e)","CpuFrequency":80,"Hardware":"ESP8266EX","CR":"393/699"}} 12:19:39.579 MQT: stat/tasmota_83522B/STATUS3 = {"StatusLOG":{"SerialLog":2,"WebLog":4,"MqttLog":0,"SysLog":0,"LogHost":"","LogPort":514,"SSId":["WIFI@HOME",""],"TelePeriod":10,"Resolution":"559580C0","SetOption":["00008009","2805C80001000600003C5A0A192800000000","00000080","00006000","00004000","00000000"]}} 12:19:39.613 MQT: stat/tasmota_83522B/STATUS4 = {"StatusMEM":{"ProgramSize":652,"Free":348,"Heap":23,"ProgramFlashSize":1024,"FlashSize":1024,"FlashChipId":"1460C4","FlashFrequency":40,"FlashMode":"DOUT","Features":["0809","8F9AC787","04368001","000000CF","010013C0","C000F981","00004004","00001000","54000020","00000080","00000000"],"Drivers":"1,2,3,!4,!5,!6,7,!8,9,10,12,!16,!18,!19,!20,!21,!22,!24,26,!27,29,!30,!35,!37,!45,62,!68","Sensors":"1,2,3,4,5,6","I2CDriver":"7"}} 12:19:39.654 MQT: stat/tasmota_83522B/STATUS5 = {"StatusNET":{"Hostname":"tasmota-83522B-4651","IPAddress":"192.168.101.37","Gateway":"192.168.100.254","Subnetmask":"255.255.254.0","DNSServer1":"192.168.100.246","DNSServer2":"0.0.0.0","Mac":"34:94:54:83:52:2B","Webserver":2,"HTTP_API":1,"WifiConfig":4,"WifiPower":17.0}} 12:19:39.679 MQT: stat/tasmota_83522B/STATUS6 = {"StatusMQT":{"MqttHost":"mqtt.mulatz.lan","MqttPort":1883,"MqttClientMask":"tasmota_nousa1t_5","MqttClient":"tasmota_nousa1t_5","MqttUser":"tasmota_nousa1t_5","MqttCount":1,"MqttTLS":0,"MAX_PACKET_SIZE":1200,"KEEPALIVE":30,"SOCKET_TIMEOUT":4}} 12:19:39.706 MQT: stat/tasmota_83522B/STATUS7 = {"StatusTIM":{"UTC":"2025-03-03T11:19:39Z","Local":"2025-03-03T12:19:39","StartDST":"2025-03-30T02:00:00","EndDST":"2025-10-26T03:00:00","Timezone":"+01:00","Sunrise":"07:27","Sunset":"18:36"}} 12:19:39.725 MQT: stat/tasmota_83522B/STATUS9 = {"StatusPTH":{"PowerDelta":0,"PowerLow":0,"PowerHigh":0,"VoltageLow":0,"VoltageHigh":0,"CurrentLow":0,"CurrentHigh":0,"MaxPower":0,"MaxPowerHold":10,"MaxPowerWindow":30,"MaxEnergy":0,"MaxEnergyStart":0}} 12:19:39.753 MQT: stat/tasmota_83522B/STATUS10 = {"StatusSNS":{"Time":"2025-03-03T12:19:39","ENERGY":{"TotalStartTime":"2024-01-02T14:13:11","Total":105.563,"Yesterday":0.000,"Today":0.000,"Power":0.00,"ApparentPower":0.00,"ReactivePower":0.00,"Factor":0.00,"Voltage":0.00,"Current":0.000}}} 12:19:39.777 MQT: stat/tasmota_83522B/STATUS11 = {"StatusSTS":{"Time":"2025-03-03T12:19:39","Uptime":"0T00:02:50","UptimeSec":170,"Heap":23,"SleepMode":"Dynamic","Sleep":50,"LoadAvg":19,"MqttCount":1,"POWER":"OFF","Wifi":{"AP":1,"SSId":"WIFI@HOME","BSSId":"44:D9:E7:F7:5D:9A","Channel":11,"Mode":"11n","RSSI":92,"Signal":-54,"LinkCount":1,"Downtime":"0T00:00:04"}}} ``` - [ ] Set `weblog` to 4 and then, when you experience your issue, provide the output of the Console log: ```lua Console output here: no specific log entry captured - it just starts over like this --> 12:38:03.005 SRC: MQTT 12:38:03.007 CMD: Grp 0, Cmd 'STATUS', Idx 1, Len 2, Pld 10, Data '10' 12:38:03.018 MQT: stat/tasmota_83522B/STATUS10 = {"StatusSNS":{"Time":"2025-03-03T12:38:03","ENERGY":{"TotalStartTime":"2024-01-02T14:13:11","Total":105.563,"Yesterday":0.000,"Today":0.000,"Power":0.00,"ApparentPower":0.00,"ReactivePower":0.00,"Factor":0.00,"Voltage":0.00,"Current":0.000}}} 12:38:03.055 SRC: MQTT 12:38:03.058 CMD: Grp 0, Cmd 'STATUS', Idx 1, Len 1, Pld 1, Data '1' 12:38:03.064 MQT: stat/tasmota_83522B/STATUS1 = {"StatusPRM":{"Baudrate":115200,"SerialConfig":"8N1","GroupTopic":"tasmotas","OtaUrl":"http://ota.tasmota.com/tasmota/release/tasmota.bin.gz","RestartReason":"Exception","Uptime":"0T00:00:07","StartupUTC":"2025-03-03T11:37:56","Sleep":50,"CfgHolder":4617,"BootCount":1780,"BCResetTime":"2024-01-02T14:13:11","SaveCount":2849,"SaveAddress":"F9000"}} 12:38:03.106 SRC: MQTT 12:38:03.109 CMD: Grp 0, Cmd 'STATUS', Idx 1, Len 2, Pld 11, Data '11' 12:38:03.118 MQT: stat/tasmota_83522B/STATUS11 = {"StatusSTS":{"Time":"2025-03-03T12:38:03","Uptime":"0T00:00:07","UptimeSec":7,"Heap":27,"SleepMode":"Dynamic","Sleep":50,"LoadAvg":130,"MqttCount":1,"POWER":"OFF","Wifi":{"AP":1,"SSId":"WIFI@HOME","BSSId":"44:D9:E7:F7:5D:9A","Channel":11,"Mode":"11n","RSSI":90,"Signal":-55,"LinkCount":1,"Downtime":"0T00:00:04"}}} 12:38:04.193 QPC: Reset 12:38:06.242 APP: Boot Count 1781 12:38:06.249 MQT: tele/tasmota_83522B/STATE = {"Time":"2025-03-03T12:38:06","Uptime":"0T00:00:10","UptimeSec":10,"Heap":27,"SleepMode":"Dynamic","Sleep":50,"LoadAvg":19,"MqttCount":1,"POWER":"OFF","Wifi":{"AP":1,"SSId":"WIFI@HOME","BSSId":"44:D9:E7:F7:5D:9A","Channel":11,"Mode":"11n","RSSI":90,"Signal":-55,"LinkCount":1,"Downtime":"0T00:00:04"}} 12:38:06.282 MQT: tele/tasmota_83522B/SENSOR = {"Time":"2025-03-03T12:38:06","ENERGY":{"TotalStartTime":"2024-01-02T14:13:11","Total":105.563,"Yesterday":0.000,"Today":0.000,"Period":0.00,"Power":0.00,"ApparentPower":0.00,"ReactivePower":0.00,"Factor":0.00,"Voltage":0.00,"Current":0.000}} 12:38:06.337 CFG: Saved to flash at F8, Count 2850, Bytes 4096 12:38:11.237 MQT: tasmota/discovery/34945483522B/config = {"ip":"192.168.101.37","dn":"tasmota_nousa1t_5","fn":["tasmota_nousa1t_5",null,null,null,null,null,null,null],"hn":"tasmota-83522B-4651","mac":"34945483522B","md":"NOUS A1T","ty":0,"if":0,"cam":0,"ofln":"Offline","onln":"Online","state":["OFF","ON","TOGGLE","HOLD"],"sw":"14.5.0","t":"tasmota_83522B","ft":"%prefix%/%topic%/","tp":["cmnd","stat","tele"],"rl":[1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],"swc":[-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1],"swn":[null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null],"btn":[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],"so":{"4":0,"11":0,"13":0,"17":0,"20":0,"30":0,"68":0,"73":0,"82":0,"114":0,"117":0},"lk":0,"lt_st":0,"bat":0,"dslp":0,"sho":[],"sht":[],"ver":1} (retained) 12:38:11.249 MQT: tasmota/discovery/3 ``` ### TO REPRODUCE * Set up a Nous A1T smart plug with the latest Tasmota firmware. * Observe the device for approximately 20 minutes. * The device will restart due to an exception, causing connected sensors to become unavailable. ### EXPECTED BEHAVIOUR The smart plug should remain stable without restarting, and the connected sensors should maintain their status without switching to "unknown". ### SCREENSHOTS nothing special to show ### ADDITIONAL CONTEXT The issue seems to be tied to a recurring exception that forces the device to restart every 18-21 minutes. This behavior is consistent across multiple Nous A1T devices running Tasmota. The restarts are causing disruptions in my Home Assistant setup, particularly with threshold sensors that rely on data from the smart plug. **(Please, remember to close the issue when the problem has been addressed)**