HA crashes on multiple ValueError

[StormCh]

Prerequisites

• Thermostat radiator valve (TV02-Zigbee)
  von TuYa

Log:

ValueError: could not convert string to float: 'unavailable'
2024-06-25 02:15:46.688 ERROR (MainThread) [custom_components.better_thermostat.utils.controlling] better_thermostat Office Büro: ERROR controlling: climate.office_buro_thermostat
Traceback (most recent call last):
  File "/config/custom_components/better_thermostat/utils/controlling.py", line 53, in control_queue
    _temp = await control_trv(self, trv)
            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/config/custom_components/better_thermostat/utils/controlling.py", line 231, in control_trv
    _current_calibration_s = await get_current_offset(self, heater_entity_id)
                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/config/custom_components/better_thermostat/adapters/delegate.py", line 55, in get_current_offset
    return await self.real_trvs[entity_id]["adapter"].get_current_offset(
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/config/custom_components/better_thermostat/adapters/mqtt.py", line 84, in get_current_offset
    return float(
           ^^^^^^

this log apears every 4-5ms.

Description

Due to reconnection of internet connection by provider, there is a 15min gap of "lost connection" to the thermostat. In fact htis warning is useless. Log file has a size of more than 100mb containing only this message.

Expected behavior:

reduce warning, reduce log traffic. No crash of HA

Actual behavior:

HA crashes

Versions

HA 2024.6.4 / BT 1.5.1