The control of Vimar 02973.B thermostat has some problems

What happened?

Hi,

I recently bought a Vimar 02973.B thermostat and I found that the control of it with Z2M has some problems:

The system mode is only heat & cool. I succeeded to load an external converter where I put off as first value in the list of withSystemMode. Firstly it worked, but after some tests I don't know what I have broken and I started to received:

Publish 'set' 'system_mode' to 'vimar_devel_thermostat' failed: 'Error: ZCL command 0xf4ce36a7b879b96f/10 hvacThermostat.write({"systemMode":3}, {"timeout":10000,"disableResponse":false,"disableRecovery":false,"disableDefaultResponse":true,"direction":0,"srcEndpoint":null,"reservedBits":0,"manufacturerCode":null,"transactionSequenceNumber":null,"writeUndiv":false}) failed (Status 'INVALID_VALUE')'

RunningState is missing. I also tried to load it in my external converter but I got errors
SetPoint doesn't work with precision of 0.1, only with 0.5. It can be read with 0.1 but published only with 0.5 unfortunately. Maybe you have some suggestions here in order to fix it. When it is set with 0.1 (as it comes from source code), the termostat never set that value, it always tends to set the closest value of 0.5 or x.0. That is a little strange. Could it be a firmware problem with the thermostat ?
LocalTemperatureCalibrarion is missing. I tried with external converter, it doesn't work.

What did you expect to happen?

No response

How to reproduce it (minimal and precise)

No response

Zigbee2MQTT version

1.37.1

Adapter firmware version

20211210

Adapter

Sonoff Dongle-P

Setup

Intel NUC with HAOS

Debug log

Here is my external converter that I have worked with:

const fz = require('zigbee-herdsman-converters/converters/fromZigbee');
const tz = require('zigbee-herdsman-converters/converters/toZigbee');
const exposes = require('zigbee-herdsman-converters/lib/exposes');
const e = exposes.presets;
// const ea = exposes.access;

// function roundToOneDecimalPlace(value) {
//   return Math.round(value * 10) / 10;
// }

const definition = {

  zigbeeModel: ['Thermostat_v0.1', 'WheelThermostat_v1.0'],
  model: '02973.B',
  vendor: 'Vimar',
  description: 'Vimar IoT thermostat',
  fromZigbee: [fz.thermostat],
  toZigbee: [
    // {
    //   key: ['occupied_heating_setpoint'],
    //   convertSet: async (entity, key, value, meta) => {
    //     value = roundToOneDecimalPlace(value);
    //     await tz.thermostat_occupied_heating_setpoint.convertSet(entity, key, value, meta);
    //   },
    // },
    // tz.thermostat_running_state,
    tz.thermostat_local_temperature,
    // tz.thermostat_local_temperature_calibration,
    tz.thermostat_occupied_heating_setpoint,
    tz.thermostat_occupied_cooling_setpoint,
    tz.thermostat_system_mode,
  ],
  exposes: [
    e.climate()
      .withLocalTemperature()
      .withSetpoint('occupied_heating_setpoint', 4, 40, 0.5)
      .withSetpoint('occupied_cooling_setpoint', 4, 40, 0.5)
      // .withLocalTemperatureCalibration(-5, 5, 0.1)
      .withSystemMode(['off', 'heat', 'cool']),
      // .withRunningState(['idle', 'heat', 'cool']),
  ],
  configure: async (device, coordinatorEndpoint) => {
      const endpoint = device.getEndpoint(10);
      const binds = ['genBasic', 'genIdentify', 'hvacThermostat'];
      await reporting.bind(endpoint, coordinatorEndpoint, binds);
      await reporting.thermostatTemperature(endpoint);
  },

};

module.exports = definition;

Koenkk / zigbee2mqtt

The control of Vimar 02973.B thermostat has some problems #23006