Climate entity should expose heat/cool modes based on cooling_active state

[jr42]

Description

The climate entity climate.kermi_storage_heating_kermi_storage_heating_climate currently only exposes hvac_modes: ["heat"], even though the Kermi system supports both heating and cooling modes.

Current Behavior

{
  "entity_id": "climate.kermi_storage_heating_kermi_storage_heating_climate",
  "state": "heat",
  "attributes": {
    "hvac_modes": ["heat"],
    "preset_modes": ["none", "eco", "comfort", "boost", "away"],
    ...
  }
}

Expected Behavior

The climate entity should expose both heat and cool modes:

{
  "hvac_modes": ["off", "heat", "cool", "auto"],
  ...
}

The current mode should reflect the actual state based on binary_sensors/cooling_active:

• When cooling_active = OFF → state should be heat
• When cooling_active = ON → state should be cool

Evidence

The MQTT messages show that cooling_active is being published:

kermi/xcenter/storage_heating/binary_sensors/cooling_active = OFF
kermi/xcenter/storage_heating/sensors/energy_mode = eco
kermi/xcenter/storage_heating/binary_sensors/summer_mode = OFF

Use Case

I need to sync the Kermi heating/cooling mode with a Tasmota thermostat (NSPanel) that controls room temperature. The Tasmota thermostat has a ClimateModeSet command (0=heat, 1=cool) that should match the Kermi system's operating mode.

Currently, I have to create a separate MQTT trigger automation to watch cooling_active directly, rather than using the climate entity's state.

Suggested Implementation

In the climate entity discovery config, dynamically set:

• hvac_modes to include both heat and cool (and optionally auto)
• The current state based on the cooling_active binary sensor value

This would make the climate entity a complete representation of the heating circuit's operating mode.