{"record":{"id":"40aa1508ea511fcc","repo":"home-assistant/core","slug":"failed-to-set-zone-self-entity-id-error","errorCode":null,"errorMessage":"Failed to set zone {self.entity_id}: {error}","messagePattern":"Failed to set zone (.+?): (.+?)","errorType":"exception","errorClass":"HomeAssistantError","httpStatus":null,"severity":"error","filePath":"homeassistant/components/airzone/entity.py","lineNumber":244,"sourceCode":"        \"\"\"Return zone value by key.\"\"\"\n        value = None\n        if zone := self.coordinator.data[AZD_ZONES].get(self.system_zone_id):\n            if key in zone:\n                value = zone[key]\n        return value\n\n    async def _async_update_hvac_params(self, params: dict[str, Any]) -> None:\n        \"\"\"Send HVAC parameters to API.\"\"\"\n        _params = {\n            API_SYSTEM_ID: self.system_id,\n            API_ZONE_ID: self.zone_id,\n            **params,\n        }\n        _LOGGER.debug(\"update_hvac_params=%s\", _params)\n        try:\n            await self.coordinator.airzone.set_hvac_parameters(_params)\n        except AirzoneError as error:\n            raise HomeAssistantError(\n                f\"Failed to set zone {self.entity_id}: {error}\"\n            ) from error\n\n        self.coordinator.async_set_updated_data(self.coordinator.airzone.data())\n","sourceCodeStart":226,"sourceCodeEnd":249,"githubUrl":"https://github.com/home-assistant/core/blob/58a3fdb3ea0538617f0a07efcfba6294de64fd59/homeassistant/components/airzone/entity.py#L226-L249","documentation":"HomeAssistantError raised by AirzoneZoneEntity._async_update_hvac_params when the local API call set_hvac_parameters() (API_SYSTEM_ID + API_ZONE_ID + params) fails with AirzoneError. This is the write path behind set_temperature, set_fan_mode, turn_on/off and set_hvac_mode; the zone entity_id plus the library error is shown to the user.","triggerScenarios":"Any climate service that writes zone parameters — set_temperature with setpoint out of the zone's min/max range, set_fan_mode with an unsupported speed, turn_on/off — while the WebServer errors (connectivity, HTTP status, JSON parse).","commonSituations":"Automations sending setpoints outside the zone limits configured on the Airzone system; requests racing with a coordinator refresh; flaky Wi-Fi to the bridge.","solutions":["Read the embedded library error to distinguish connectivity from parameter rejection.","Clamp setpoints to the entity's min_temp/max_temp before calling climate.set_temperature.","Retry after confirming the WebServer responds (curl its API endpoint).","For repeated failures, reload the integration or reboot the WebServer to clear the stuck HTTP session."],"exampleFix":"# before\nawait climate.async_set_temperature(temperature=12)\n\n# after\n temp = max(climate.min_temp, min(climate.max_temp, 12))\nawait climate.async_set_temperature(temperature=temp)","handlingStrategy":"validation","validationCode":"temp = max(entity.min_temp, min(entity.max_temp, temp))\nawait entity.async_set_temperature(temperature=temp)","typeGuard":null,"tryCatchPattern":"try:\n    await entity.async_set_temperature(temperature=temp)\nexcept HomeAssistantError as err:\n    _LOGGER.warning(\"Zone write failed: %s\", err)","preventionTips":["Clamp setpoints to min_temp/max_temp before calling set_temperature.","Only send fan modes from entity.fan_modes.","Check WebServer reachability before long automation sequences."],"tags":["airzone","zone","climate","api-write"],"backgroundTag":null,"analyzedSha":"58a3fdb3ea0538617f0a07efcfba6294de64fd59","analyzedAt":"2026-08-14T20:54:38.818Z","schemaVersion":2},"datasetVersion":"2026-08-15T22:17:37.221Z"}