core: Problem with Airzone integration ("fan_only" mode)

The problem

When I select the “fan_only” mode of operation, the “Airzone” integration fails and is no longer available. The only way to make this integration available again is to change the mode of operation on the physical device or in the “Airzone Cloud” App. This situation only occurs with the “fan_only” operating mode.

What version of Home Assistant Core has the issue?

core-2023.7.2

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

Airzone

Link to integration documentation on our website

https://www.home-assistant.io/integrations/airzone

Diagnostics information

home-assistant_airzone_2023-07-20T17-33-19.800Z.log

Example YAML snippet

No response

Anything in the logs that might be useful for us?

Logger: homeassistant.components.airzone.coordinator
Source: components/airzone/coordinator.py:40
Integration: Airzone (documentation, issues)
First occurred: 19:19:15 (7 occurrences)
Last logged: 19:25:24

Unexpected error fetching airzone data: 'setpoint'
Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/helpers/update_coordinator.py", line 283, in _async_refresh
    self.data = await self._async_update_data()
                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/airzone/coordinator.py", line 40, in _async_update_data
    await self.airzone.update()
  File "/usr/local/lib/python3.11/site-packages/aioairzone/localapi.py", line 246, in update
    self.parse_system_zones(system_data)
  File "/usr/local/lib/python3.11/site-packages/aioairzone/localapi.py", line 279, in parse_system_zones
    self.zones[system_zone_id].update_data(zone_data)
  File "/usr/local/lib/python3.11/site-packages/aioairzone/zone.py", line 165, in update_data
    self.temp_set = float(zone_data[API_SET_POINT])
                          ~~~~~~~~~^^^^^^^^^^^^^^^
KeyError: 'setpoint'

Additional information

No response