How can I ignore "NaN" values?

Configuration
1

Hi,

I have a MQTT sensor to measure humidity and let home-assistant notify me via Telegram when the humidity value gets above 60%.

The MQTT sensor configuration:

- platform: mqtt
  state_topic: "rooms/livingroom/humidity"
  name: 'Living Room Humidity'
  unit_of_measurement: '%'

The automation configuration:

- alias: Living Room Humidity
  trigger:
    platform: numeric_state
      entity_id: sensor.livingroom_humidity
      above: 60
  action:
    service: notify.telegram
    data:
      message: The living room needs some fresh air!

The notification works, however sometimes the MQTT sensor value is shown as “NaN” in home assistant and this also triggers a notification. How can I avoid the “NaN” values or avoid that home assistant sends a notification in that case?

1 Like
2

i have exactly opposite issue. sometimes my crappy sensor sending NaNs and i want to know when i have to restart it (or check the wiring). But HA just ignores NaNs. At least in mqtt sensors.

3

Does it still ignore NaN, my sensors now show as None when tasmota sends NaN values. Eg if I disconnected my sensor.

4

I have the same problem. Sometimes my sensor sensor.modul_co2_2_temperature state = NaN and trigger

  - above: 26
    entity_id: sensor.modul_co2_2_temperature
    platform: numeric_state

run automation.

How can I ignore NaN state and not run trigger when it’s “NaN”?
Please,help!

2020-10-14_10-06-27
2020-10-14_10-06-27983Ă—609 54.6 KB

5

How long does the value stay NaN for ?
If the automation is not time critical you can effectively filter out the NaN’s with a time condition

  - above: 26
    entity_id: sensor.modul_co2_2_temperature
    platform: numeric_state
#         hh:mm:ss
    for: '00:05:00'
1 Like