Z2M - Centralite 3157100 - Incorrect Celcius-Farenheit Conversion - local_temperature_calibration

[martyg77]

The problem

I have a Centralite 3157100-E on my network.

I observe the following message in my HA logs about every 3 minutes: 2023-10-25 11:23:50.683 ERROR (MainThread) [homeassistant.components.mqtt.number] Invalid value for number.furnace_local_temperature_calibration: 0 (range 27.5 - 36.5)

MQTT has these limits correctly populated as -2.5..+2.5 (Temperature offset) HA treats the MQTT data as absolute temperatures, converting min = -2.5C = 27.5F; max = +2.5C = 36.5F

HA code should not be blindly converting C->F for these offsets Correct conversion in this case should be -4.5..+4.5F

More details in my original bug reports https://github.com/home-assistant/core/issues/102880 https://github.com/home-assistant/core/issues/119031

What version of Home Assistant Core has the issue?

reported 2024.5.5, still present in current builds

What was the last working version of Home Assistant Core?

No response

What type of installation are you running?

Home Assistant OS

Integration causing the issue

No response

Link to integration documentation on our website

No response

Diagnostics information

No response

Example YAML snippet

No response

Anything in the logs that might be useful for us?

No response

Additional information

No response

[home-assistant[bot]]

Hey there @emontnemery, @jbouwh, @bdraco, mind taking a look at this issue as it has been labeled with an integration (mqtt) you are listed as a code owner for? Thanks!

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[jbouwh]

Can you supply more information about the MQTT configuration payload, and the state update. Especially a state update that causes the error.

Note that the conversion between Celcius and Fahrenheit is something outside of MQTT.

[martyg77]

I spent some time digging into this earlier this year: please review https://github.com/home-assistant/core/issues/102880#issuecomment-1793506999

I am trying to isolate the setup code that sets up entity number.local_temperature_calibration

I agree this is likely not a MQTT or Z2M issue. Would you mind rerouting to the people that own this part?

Can you point me in the right direction in the code? I keep going in circles whenver I try to reverse-engineer this.

Thank you for your help, and have a great day.

[jbouwh]

You can open a ticket here: https://github.com/Koenkk/zigbee2mqtt/issues/new/choose

[jbouwh]

I suggest closing this issue here.