Negative values for power consumption once in a while

Configuration Z-Wave
1

Hello !

I’m fairly new to the platform. And I enjoy it deeply.

My question is as follow. I have a couple Z-Wave thermostat that report the consumption when heating is on in watts.

My problem is that once in a while, values returned from the thermostat is -32768, which is impossible. It’s not even heating when this happens ! This values obviously messes up all my kWh sensors :frowning:

Screen Shot 2021-03-01 at 8.18.54 PM

Is there any way to prevent these negative values ?

Regards

1 Like
2

You can use a template sensor.
For example:

sensor:
  - platform: template
    sensors:
      e3dc_battery_power_pos_only:
        unit_of_measurement: 'W'
        value_template: >
          {% if states('sensor.e3dc_battery_power') | int > 0 %}
            {{ states('sensor.e3dc_battery_power') }} 
          {% else -%}
            0
          {% endif %}
1 Like
3

Or you could use a filter sensor with a range filter do define possible values.

4

Thank you very much gentleman.

IM going to have it rolled in an utility meter as well since I want to reset the consumption on a month basis.

5

What device is making that value? That’s a buffer overflow. There’s a bug somewhere in that devices firmware.

6

Sinope Thermostat Model # TH1123ZB

The ones that heats often does not seem to exhibit this problem. Only the ones that stay idle for a long time.

7

Warned the manufacturer. They gave me no promises as they have their own hub but still.

8

J’ai le même problème avec un thermostat que j’ai débrancher pour faire des rénovation.

Il m’a reporté un retour d’énergie de 1800 kwh. C’est vraiment un problème qui viens du manufacturier.

9

I have the Honeywell Z-Wave wall thermostat and I have the same issue. Every so often it reports a wildly impossible, low value. Throws off my graphs.